add custom flash partitions

.cargo/config.toml

@@ -2,13 +2,11 @@
 runner = "espflash flash --monitor --chip esp32s3"
 
 [env]
-ESP_LOG="info"
+ESP_LOG = "debug"
 WM_CONN = '{"ssid": "Wokwi-GUEST", "psk": "", "data": {}}'
 
 [build]
-rustflags = [
+rustflags = ["-C", "link-arg=-nostartfiles"]
-  "-C", "link-arg=-nostartfiles",
-]
 
 target = "xtensa-esp32s3-none-elf"
 

.gitignore

@@ -32,3 +32,6 @@ creaturedex.wiki/
 *.zip
 *.lck
 schematics/.history/
+
+wokwi/wokwi-api.h
+wokwi/ch1115.chip.wasm

Cargo.lock

@@ -363,6 +363,7 @@ dependencies = [
  "embedded-hal-bus",
  "embedded-io 0.7.1",
  "embedded-storage",
+ "embedded-text",
  "esp-alloc",
  "esp-bootloader-esp-idf",
  "esp-hal",
@@ -1049,6 +1050,17 @@ dependencies = [
  "embedded-storage",
 ]
 
+[[package]]
+name = "embedded-text"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6cf5c72c52db2f7dbe4a9c1ed81cd21301e8d66311b194fa41c04fb4f71843ba"
+dependencies = [
+ "az",
+ "embedded-graphics",
+ "object-chain",
+]
+
 [[package]]
 name = "enumset"
 version = "1.1.14"
@@ -2130,6 +2142,12 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "object-chain"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41af26158b0f5530f7b79955006c2727cd23d0d8e7c3109dc316db0a919784dd"
+
 [[package]]
 name = "once_cell"
 version = "1.21.4"

Cargo.toml

@@ -54,6 +54,7 @@ esp-storage = "0.9.0"
 embedded-storage = "0.3.1"
 binary_serde = "1.0.25"
 static_assertions = { version = "1.1.0", default-features = false }
+embedded-text = "0.7.3"
 
 [build-dependencies]
 log = "0.4.27"
@@ -82,3 +83,6 @@ opt-level = 's'
 [features]
 default = []
 wokwi = []
+
+[lints.clippy]
+manual_async_fn = "allow"

build.rs

@@ -1,5 +1,6 @@
 fn main() {
     generate_filter_snippet();
+    compile_custom_wokwi_components();
     linker_be_nice();
     // make sure linkall.x is the last linker script (otherwise might cause problems with flip-link)
     println!("cargo:rustc-link-arg=-Tlinkall.x");
@@ -70,6 +71,28 @@ fn linker_be_nice() {
     );
 }
 
+fn compile_custom_wokwi_components() {
+    use std::process::Command;
+
+    if std::env::var("CARGO_FEATURE_WOKWI").is_ok() {
+        println!("cargo:rerun-if-changed=wokwi/ch1115.chip.c");
+        println!("cargo:rerun-if-changed=wokwi/ch1115.chip.json");
+        println!("cargo:rerun-if-changed=wokwi/Makefile");
+
+        let status = Command::new("make")
+            .current_dir("wokwi")
+            .status()
+            .expect("Failed to execute make command. Is 'make' installed?");
+
+        if !status.success() {
+            panic!(
+                "Wokwi custom chip compilation failed with status: {}",
+                status
+            );
+        }
+    }
+}
+
 // Taken over from esp_println because impossible to just extend their existing env logger.
 // https://github.com/esp-rs/esp-hal/blob/8fa6d7e985e724d6ad998e34307429b0920da370/esp-println/build.rs
 fn generate_filter_snippet() {

diagram.json

@@ -59,19 +59,23 @@
       "top": -291.2,
       "left": -167.2,
       "attrs": { "pins": "i2c" }
-    }
+    },
+    { "type": "chip-ch1115", "id": "chip1", "top": 509.82, "left": -4.8, "attrs": {} },
+    { "type": "chip-ch1115", "id": "chip2", "top": 625.02, "left": -4.8, "attrs": {} },
+    { "type": "chip-ch1115", "id": "chip3", "top": 394.62, "left": -4.8, "attrs": {} },
+    { "type": "wokwi-vcc", "id": "vcc1", "top": 39.16, "left": 316.8, "attrs": {} }
   ],
   "connections": [
     [ "esp1:TX", "$serialMonitor:RX", "", [] ],
     [ "esp1:RX", "$serialMonitor:TX", "", [] ],
     [ "lcd1:VCC", "esp1:3V3", "red", [ "v19.2", "h-57.6", "v-105.6", "h-124.95" ] ],
     [ "lcd1:GND", "esp1:GND.2", "black", [ "v28.8", "h-76.8", "v-76.8" ] ],
-    [ "lcd1:CS", "esp1:11", "orange", [ "v0" ] ],
+    [ "lcd1:CS", "esp1:11", "orange", [ "v259.2", "h-729.6", "v-95.82" ] ],
-    [ "lcd1:D/C", "esp1:12", "gold", [ "v0" ] ],
+    [ "lcd1:D/C", "esp1:12", "gold", [ "v278.4", "h-729.6", "v-105.42" ] ],
     [ "lcd1:RESET", "esp1:10", "brown", [ "v0" ] ],
-    [ "lcd1:MOSI", "esp1:35", "violet", [ "v105.6", "h-124.8", "v-144" ] ],
+    [ "lcd1:MOSI", "esp1:35", "violet", [ "v124.8", "h-124.8", "v0.18" ] ],
     [ "lcd1:SCK", "esp1:36", "white", [ "v115.2", "h-144", "v-86.4" ] ],
-    [ "esp1:37", "lcd1:MISO", "magenta", [ "h57.6", "v105.6", "h172.8" ] ],
+    [ "esp1:37", "lcd1:MISO", "magenta", [ "h57.6", "v-0.18", "h594.94" ] ],
     [ "btn-up:2.l", "esp1:38", "purple", [ "h-9.6", "v19.4" ] ],
     [ "btn-up:1.l", "esp1:GND.2", "black", [ "h0" ] ],
     [ "btn-down:1.l", "esp1:GND.2", "black", [ "h0" ] ],
@@ -87,7 +91,31 @@
     [ "lcd2:GND", "esp1:GND.2", "black", [ "h0" ] ],
     [ "lcd2:VCC", "esp1:3V3.1", "red", [ "h0" ] ],
     [ "lcd2:SDA", "esp1:17", "green", [ "h-134.4", "v413" ] ],
-    [ "lcd2:SCL", "esp1:18", "green", [ "h-124.8", "v38.7" ] ]
+    [ "lcd2:SCL", "esp1:18", "green", [ "h-124.8", "v38.7" ] ],
+    [ "chip2:RES", "chip1:RES", "gray", [ "h-28.8", "v-115.2" ] ],
+    [ "chip1:RES", "chip3:RES", "gray", [ "h-28.8", "v-67.2" ] ],
+    [ "chip2:GND", "chip1:GND", "black", [ "h-48", "v-115.2" ] ],
+    [ "chip1:GND", "chip3:GND", "black", [ "h-48", "v-115.2" ] ],
+    [ "chip2:VCC", "chip1:VCC", "red", [ "h-38.4", "v-115.2" ] ],
+    [ "chip3:VCC", "chip1:VCC", "red", [ "h-38.4", "v115.2" ] ],
+    [ "chip2:DC", "chip1:DC", "gold", [ "h46.84", "v-115.2" ] ],
+    [ "chip1:DC", "chip3:DC", "gold", [ "h46.84", "v-115.2" ] ],
+    [ "chip2:SCL", "chip1:SCL", "white", [ "h56.44", "v-115.2" ] ],
+    [ "chip1:SCL", "chip3:SCL", "white", [ "h56.44", "v-115.2" ] ],
+    [ "chip3:SDA", "chip1:SDA", "violet", [ "h-1.16", "h67.2", "v57.6" ] ],
+    [ "chip1:SDA", "chip2:SDA", "violet", [ "h66.04", "v115.2" ] ],
+    [ "esp1:35", "chip3:SDA", "violet", [ "h364.53", "v153.42" ] ],
+    [ "chip3:SCL", "esp1:36", "white", [ "h56.44", "v-172.62" ] ],
+    [ "esp1:12", "chip3:DC", "gold", [ "h-29.12", "v105.42", "h460.8", "v67.2" ] ],
+    [ "esp1:GND.4", "chip3:GND", "black", [ "h18.93", "v19.02", "h105.6", "v48" ] ],
+    [ "esp1:3V3.1", "chip3:VCC", "red", [ "h-57.92", "v259.02" ] ],
+    [ "lcd1:VCC", "vcc1:VCC", "red", [ "v67.2", "h-48" ] ],
+    [ "lcd1:LED", "vcc1:VCC", "red", [ "v67.2", "h-144.01" ] ],
+    [ "lcd1:RST", "esp1:10", "gray", [ "v268.8", "h-729.6", "v-115.02" ] ],
+    [ "esp1:47", "chip3:RES", "gray", [ "h28.53", "v182.22" ] ],
+    [ "chip3:CS", "esp1:13", "blue", [ "h-278.4", "v-153.42" ] ],
+    [ "esp1:14", "chip1:CS", "magenta", [ "h-9.92", "v259.02" ] ],
+    [ "esp1:21", "chip2:CS", "#8f4814", [ "h95.73", "v316.62" ] ]
   ],
   "dependencies": {}
 }

espflash.toml

@@ -0,0 +1,2 @@
+[idf_format_args]
+partition_table = "partitions.csv"

model/common.scad

@@ -1,45 +1,266 @@
+include <BOSL2/std.scad>
+
 BASE_MODEL_SCALE = [1.1, 1, 1.1];
 BASE_MODEL_TRANSLATE = [-0.4, 0, 16.978];
+EPS = 0.01;
+$fn = 50;
 
-module main_display(){
+module pin_header(cols = 4, rows = 1, anchor = BOTTOM, spin = 0, orient = UP) {
-    // Outer dimensions, height currently unknown
+  // Standard pin header dimensions (in mm)
-    cube([55.04, 89.3, 10]);
+  base_height = 2.54; // Height of the plastic base
+  pin_width = 0.64; // Width/thickness of the square pin
+  pin_length = 6.0; // Length of pin sticking up
+  pitch = 2.54;
+
+  // 1. The Plastic Base is the Parent
+  // It directly receives your anchor, spin, and orient arguments.
+  color("darkgrey")
+    cuboid([cols * pitch, rows * pitch, base_height], anchor=anchor, spin=spin, orient=orient) {
+
+      // 2. Metal Pins are the Children
+      // Placed relative to the center of the plastic base
+      color("silver")
+        xcopies(spacing=pitch, n=cols) {
+          ycopies(spacing=pitch, n=rows) {
+            up(base_height / 2)
+              cuboid([pin_width, pin_width, pin_length], anchor=BOTTOM);
+          }
+        }
+
+      // Allows attaching other objects to this header if needed
+      children();
+    }
 }
 
-module pad(){
+module main_display(pin_header = false) {
+  // Outer dimensions
+  width = 55.04;
+  length = 89.35;
+  height = 2.7;
+
+  display_height = 3;
+  display_length = 77.6;
+  display_inset = 5.7;
+
+  sd_width = 26.6;
+  sd_height = 3;
+  sd_length = 16.6;
+  sd_inset = 29.4;
+
+  hole_diameter = 3;
+  hole_inset = 1.5;
+
+  difference() {
+    cuboid([length, width, height]) {
+      position(TOP + RIGHT)
+        left(display_inset)
+          color("black")
+            cuboid([display_length, width, display_height], anchor=BOTTOM + RIGHT);
+
+      position(BOTTOM + RIGHT + FRONT)
+        left(sd_inset)
+          cuboid([sd_width, sd_length, sd_height], anchor=TOP + RIGHT + FRONT);
+
+      position(BOTTOM + LEFT)
+        xrot(180)
+          pin_header(14, spin=90, anchor=BOTTOM + BACK);
+    }
+
+    xcopies(length - (2 * hole_inset) - hole_diameter) {
+      ycopies(width - (2 * hole_inset) - hole_diameter) {
+        zcyl(d=hole_diameter, h=height + EPS);
+      }
+    }
+  }
+}
+
+module pad() {
   // A button has 4.2 x 6 mm -> At least ~20x20 are required for the PCB
   cube([20, 20, 10]);
 }
 
-module small_display_below_main()
+module secondary_display(pin_header = false) {
-{
   // https://de.aliexpress.com/item/1005003753680706.html
-    cube([45.8, 20, 11.3]);
+  length = 45.8;
-    // old i2c variant:
+  width = 20;
-    //cube([43.5, 19.44, 4.5]);
+  height = 3.7;
 
-    // initial dimension ideas
+  hole_diameter = 2;
-    // cube([38,16,4]);
+  hole_inset = 1.5;
-    // translate([150,0,0]) cube([22,5.5,4]);
+
+  difference() {
+    cuboid([length, width, height]) {
+      if (pin_header)
+        position(LEFT + TOP)
+          pin_header(7, spin=90, anchor=BACK + BOTTOM);
+    }
+
+    right(length / 2 - hole_inset) {
+      ycopies(width - (2 * hole_inset) - hole_diameter) {
+        zcyl(d=hole_diameter, h=height + EPS, anchor=RIGHT);
+      }
+    }
+  }
 }
 
-module tertiary_display()
+module battery(anchor = BOTTOM) {
-{
-    // https://de.aliexpress.com/item/1005006034531826.html
-    cube([80, 36, 10]);
-}
-
-module battery() {
   // 18650
-    rotate([0,90,0]) cylinder(d=18, h=65);
+  rotate([0, 90, 0]) cylinder(d=18, h=65, anchor=anchor);
 }
 
-module microcontroller() {
+/// USB-C port and switch not 100% dimensionally accurate, take care!
-    // width 32 including USB-C port
+module micro_controller(battery_holder = false, battery = false) {
-    length = 91.5;
+  pcb_length = 91.5;
-    height = 20;
+  pcb_height = 6.5; // including components, highest point: jst connector, followed by uC
+  pcb_height_no_components = 1.1;
+  pcb_width = 28.8;
+
+  hole_diameter = 2.5;
+  hole_inset = 1;
+  usb_protrusion = 1.7;
+  usb_width = 9;
+  usb_inset_from_pcb_end = 5;
+  power_switch_protrusion = 2.1;
+  power_switch_inset_from_pcb_end = 8.1;
+  power_switch_width = 4;
+
+  battery_holder_height = 15;
+  battery_holder_width = 21;
+  battery_holder_length = 77.3;
+
   battery_length = 65;
-    delta = length - battery_length;
+  battery_protrusion = 4.5;
-    cube([length, 32, height]);
+
-    translate([delta / 2,16, 15]) battery();
+  difference() {
+    cuboid([pcb_length, pcb_width, pcb_height], rounding=2, edges="Z") {
+      if (battery_holder)
+        position(TOP)
+          cube([battery_holder_length, battery_holder_width, battery_holder_height], anchor=BOTTOM + CENTER) {
+            if (battery)
+              position(TOP)
+                up(battery_protrusion)
+                  battery(anchor=CENTER + LEFT);
+          }
+      position(RIGHT + BOTTOM) {
+        position(FRONT)
+          left(usb_inset_from_pcb_end)
+            cube([usb_width, usb_protrusion, pcb_height - pcb_height_no_components], orient=FRONT, anchor=RIGHT + BOTTOM + FRONT);
+        position(BACK)
+          left(power_switch_inset_from_pcb_end)
+            cube([power_switch_width, power_switch_protrusion, pcb_height - pcb_height_no_components], orient=FRONT, anchor=RIGHT + TOP + FRONT);
+      }
+    }
+
+    xcopies(pcb_length - (2 * hole_inset) - hole_diameter) {
+      ycopies(pcb_width - (2 * hole_inset) - hole_diameter) {
+        cyl(d=hole_diameter, h=pcb_height + EPS, orient=UP);
+      }
+    }
+  }
+}
+
+module nfc(pin_header = true) {
+  length = 43;
+  width = 40.5;
+  height = 4;
+
+  pin_protrusion = 2.2;
+
+  hole_diameter = 3;
+  hole_inset = 6;
+
+  x_span = length - (2 * hole_inset) - hole_diameter;
+  y_span = width - (2 * hole_inset) - hole_diameter;
+
+  color("red")
+    difference() {
+      cuboid([length, width, height], rounding=2, edges="Z") {
+        // pin header is lower than highest other component -> in the cube.
+        if (pin_header)
+          right(6 - pin_protrusion) // ugly: 6mm is the pin height
+            position(LEFT + TOP)
+              yrot(-90)
+                pin_header(7, spin=90, anchor=FRONT + TOP);
+      }
+
+      move_copies(
+        [
+          [x_span / 2, -y_span / 2], // Bottom-Left corner
+          [-x_span / 2, y_span / 2], // Top-Right corner
+        ]
+      ) {
+        zcyl(d=hole_diameter, h=height + EPS);
+      }
+    }
+}
+
+module tertiary_display(pin_headers = true) {
+  // https://de.aliexpress.com/item/1005006034531826.html
+
+  pcb_length = 81;
+  pcb_width = 36.1;
+  pcb_height = 3.7;
+
+  hole_diameter = 2.8;
+  hole_inset = 1;
+
+  display_length = 71.2;
+  display_width = 24.4;
+  display_height = 7;
+
+  piggy_length = 41.8;
+  piggy_width = 19.1;
+  piggy_height = 8.5 - 2.6;
+  piggy_inset = 6.2;
+
+  jumper_protrusion = 6.6;
+  pin_protrusion = 6.2;
+
+  color("green")
+    difference() {
+      cuboid([pcb_length, pcb_width, pcb_height]) {
+        position(TOP)
+          cuboid([display_length, display_width, display_height], anchor=BOTTOM);
+      }
+
+      xcopies(pcb_length - (2 * hole_inset) - hole_diameter) {
+        ycopies(pcb_width - (2 * hole_inset) - hole_diameter) {
+          zcyl(d=hole_diameter, h=pcb_height + 1);
+        }
+      }
+    }
+
+  // Replaces position(BOTTOM + BACK + LEFT) so that difference cannot mess with color.
+  translate([-pcb_length / 2 + piggy_inset, pcb_width / 2, -pcb_height / 2]) {
+    color("black")
+      cuboid([piggy_length, piggy_width, piggy_height], anchor=TOP + BACK + LEFT);
+
+    if (pin_headers) {
+      // Replaces position(LEFT + BOTTOM) so that parent child cannot mess with color.
+      translate([0, -piggy_width / 2, -piggy_height])
+        right(6 - pin_protrusion)
+          yrot(-90)
+            pin_header(4, spin=90, anchor=BACK + TOP);
+
+      // Replaces position(RIGHT + BOTTOM) so that parent child cannot mess with color.
+      translate([piggy_length, -piggy_width / 2, -piggy_height])
+        left(6 - pin_protrusion)
+          yrot(90)
+            back(1.6)
+              pin_header(2, spin=-90, anchor=BACK + TOP);
+
+      // Replaces position(BACK + TOP) so that parent child cannot mess with color.
+      translate([piggy_length / 2, -EPS, 0])
+        pin_header(16, anchor=BACK + TOP);
+    }
+  }
+}
+
+// show different components as overview
+if (false) {
+  back(30) tertiary_display(true);
+  back(80) yrot(180) secondary_display(true);
+  right(100) zrot(90) main_display(true);
+  fwd(20) micro_controller(true, true);
+  fwd(60) nfc(true);
 }

partitions.csv

@@ -0,0 +1,9 @@
+# ESP-IDF Partition Table
+# Name,Type,SubType,Offset,Size,Flags
+nvs,data,nvs,0x9000,0x6000,
+phy_init,data,phy,0xf000,0x1000,
+# We keep the default layout more or less. But here we add a partition for more data before our application
+more_nvs,data,nvs,0x10000,0xfa000,
+# no offset given -> tool infers it for us
+factory,app,factory,        ,0xea6000,
+

src/background_tasks/nfc.rs

@@ -1,6 +1,10 @@
-use crate::storage::cardstore::CardStore;
+use crate::navigation::navigation::display_error;
+use crate::{
+    navigation::{navigation::Mutex, outputs::Outputs, state::NavigationState},
+    peripherals::Peripherals,
+};
+use alloc::string::ToString;
 use embedded_hal_bus::i2c::AtomicDevice;
-use esp_hal::rtc_cntl::Rtc;
 use esp_hal::{Blocking, i2c::master::I2c, time::Instant};
 
 use crate::{
@@ -16,8 +20,9 @@ use crate::{
 )]
 pub async fn nfc_scanner(
     mut nfc_driver: NfcPn532Driver<AtomicDevice<'static, I2c<'static, Blocking>>>,
-    mut card_store: CardStore,
+    outputs: &'static Mutex<Outputs>,
-    rtc: Rtc<'static>,
+    peripherals: &'static Peripherals,
+    navigation_state: &'static Mutex<NavigationState>,
 ) {
     loop {
         while CARD_DATA.lock().await.is_none() {
@@ -37,10 +42,24 @@ pub async fn nfc_scanner(
                     };
                     CARD_DATA.lock().await.replace(card);
 
-                    match card_store.save_raw_card(split_data, rtc.current_time_us()) {
+                    match peripherals
+                        .store
+                        .lock()
+                        .await
+                        .card_store
+                        .save_raw_card(split_data, peripherals.rtc.current_time_us())
+                        .await
+                    {
                         Ok(()) => {}
                         Err(error) => {
-                            log::error!("Error storing card in flash: {:?}", error)
+                            log::error!("Error storing card in flash: {:?}", error);
+                            display_error(
+                                error.to_string(),
+                                navigation_state,
+                                outputs,
+                                peripherals,
+                            )
+                            .await;
                         }
                     }
 

src/bin/main.rs

@@ -7,19 +7,25 @@
 )]
 #![deny(clippy::large_stack_frames)]
 
+use alloc::boxed::Box;
 use creaturedex::background_tasks;
 use creaturedex::drivers::i2c_bus::I2cBusPinConfiguration;
 use creaturedex::drivers::nfc_pn532::NfcPn532Driver;
+use creaturedex::drivers::primary_lcd::PrimaryDisplay;
 use creaturedex::drivers::secondary_oled::SecondaryDisplay;
 use creaturedex::drivers::spi_bus;
 use creaturedex::drivers::tertiary_lcd::{
     BOX, EMPTY, EXAMPLE, HEART, TertiaryDisplay, TertiaryDisplayPinConfiguration,
 };
+use creaturedex::navigation::navigation::Mutex;
 use creaturedex::navigation::inputs::Inputs;
 use creaturedex::navigation::navigation::{self};
+use creaturedex::navigation::state::NavigationState;
 use creaturedex::navigation::outputs::Outputs;
-use creaturedex::storage::cardstore::CardStore;
+use creaturedex::peripherals::Peripherals;
-use creaturedex::storage::store::Store;
+use creaturedex::peripherals::storage::cardstore::CardStore;
+use creaturedex::peripherals::storage::flash_store::FlashStore;
+use creaturedex::peripherals::storage::store::Store;
 use embassy_executor::Spawner;
 use embedded_graphics::pixelcolor::BinaryColor;
 use embedded_graphics::{
@@ -58,41 +64,44 @@ async fn main(spawner: Spawner) {
     creaturedex::logging::init();
 
     let config = esp_hal::Config::default().with_cpu_clock(CpuClock::max());
-    let peripherals = esp_hal::init(config);
+    let esp_peripherals = esp_hal::init(config);
 
     esp_alloc::heap_allocator!(#[esp_hal::ram(reclaimed)] size: HEAP_SIZE);
 
     let sw_interrupt =
-        esp_hal::interrupt::software::SoftwareInterruptControl::new(peripherals.SW_INTERRUPT);
+        esp_hal::interrupt::software::SoftwareInterruptControl::new(esp_peripherals.SW_INTERRUPT);
-    let timg0 = TimerGroup::new(peripherals.TIMG0);
+    let timg0 = TimerGroup::new(esp_peripherals.TIMG0);
     esp_rtos::start(timg0.timer0, sw_interrupt.software_interrupt0);
 
-    let (primary, mut secondaries) = retry(
+    let (mut primary, mut secondaries) = retry(
         5,
         spi_bus::DisplayPinConfiguration {
-            spi_peripheral: peripherals.SPI2,
+            spi_peripheral: esp_peripherals.SPI2,
-            sck: peripherals.GPIO36,
+            sck: esp_peripherals.GPIO36,
-            mosi: peripherals.GPIO35,
+            mosi: esp_peripherals.GPIO35,
-            miso: peripherals.GPIO37,
+            miso: esp_peripherals.GPIO37,
-            cs_primary: peripherals.GPIO11,
+            cs_primary: esp_peripherals.GPIO11,
-            cs_secondary_1: peripherals.GPIO13,
+            cs_secondary_1: esp_peripherals.GPIO13,
-            cs_secondary_2: peripherals.GPIO14,
+            cs_secondary_2: esp_peripherals.GPIO14,
-            cs_secondary_3: peripherals.GPIO21,
+            cs_secondary_3: esp_peripherals.GPIO21,
-            reset_primary: peripherals.GPIO10,
+            reset_primary: esp_peripherals.GPIO10,
-            reset_secondary: peripherals.GPIO47,
+            reset_secondary: esp_peripherals.GPIO47,
-            dc_pin: peripherals.GPIO12,
+            dc_pin: esp_peripherals.GPIO12,
         },
         spi_bus::DisplayPinConfiguration::build,
     );
 
     // Initialize the shared I2C bus using the refactored i2c_bus module.
     let shared_i2c = {
-        use alloc::boxed::Box;
+        let bus = retry(
-        let bus = retry(5, I2cBusPinConfiguration {
+            5,
-            i2c_peripheral: peripherals.I2C0,
+            I2cBusPinConfiguration {
-            scl: peripherals.GPIO18,
+                i2c_peripheral: esp_peripherals.I2C0,
-            sda: peripherals.GPIO17,
+                scl: esp_peripherals.GPIO18,
-        }, I2cBusPinConfiguration::build);
+                sda: esp_peripherals.GPIO17,
+            },
+            I2cBusPinConfiguration::build,
+        );
         Box::leak(Box::new(bus))
     };
 
@@ -113,12 +122,26 @@ async fn main(spawner: Spawner) {
         );
     }
 
-    let store = Store::new(peripherals.FLASH).expect("Could not initialize Flash Store");
+    let flash_store = Box::leak(Box::new(
-    let cardstore = CardStore::new(store).expect("Could not initialize Card Store");
+        FlashStore::new(esp_peripherals.FLASH).expect("Could not initialize Flash Store"),
+    ));
 
-    let rtc = Rtc::new(peripherals.LPWR);
+    let card_store = CardStore::new(flash_store)
+        .await
+        .expect("Could not initialize Card Store");
+
+    let store = Store {
+        flash_store,
+        card_store,
+    };
+    let rtc = Rtc::new(esp_peripherals.LPWR);
     //setup_wifi(peripherals.WIFI, peripherals.FLASH, &spawner).await;
 
+    let peripherals = Box::leak(Box::new(Peripherals {
+        store: Mutex::new(store),
+        rtc,
+    }));
+
     let mut nfc_driver = NfcPn532Driver::new(AtomicDevice::new(shared_i2c));
     if nfc_driver.configure_sam().await.is_ok() {
         log::info!("NFC SAM configuration successful on the shared I2C bus");
@@ -128,19 +151,20 @@ async fn main(spawner: Spawner) {
 
     let button_config = InputConfig::default().with_pull(Pull::Up);
     let inputs = Inputs {
-        up: Input::new(peripherals.GPIO38, button_config),
+        up: Input::new(esp_peripherals.GPIO38, button_config),
-        down: Input::new(peripherals.GPIO39, button_config),
+        down: Input::new(esp_peripherals.GPIO39, button_config),
-        left: Input::new(peripherals.GPIO40, button_config),
+        left: Input::new(esp_peripherals.GPIO40, button_config),
-        right: Input::new(peripherals.GPIO41, button_config),
+        right: Input::new(esp_peripherals.GPIO41, button_config),
-        back: Input::new(peripherals.GPIO8, button_config),
+        back: Input::new(esp_peripherals.GPIO8, button_config),
-        ok: Input::new(peripherals.GPIO0, button_config),
+        ok: Input::new(esp_peripherals.GPIO0, button_config),
     };
 
     display_shit(&mut secondaries[0], "foo 1");
     display_shit(&mut secondaries[1], "bar 1");
     display_shit(&mut secondaries[2], "baz 1");
+    display_shit_prim(&mut primary, "Hello World");
 
-    let outputs = {
+    let outputs = Box::leak(Box::new(Mutex::new({
         let [sec_1, sec_2, sec_3] = secondaries;
         Outputs {
             primary_display: primary,
@@ -150,12 +174,14 @@ async fn main(spawner: Spawner) {
             tertiary_display: lcd,
             _led_a: (),
         }
-    };
+    })));
+
+    let navigation_state = Box::leak(Box::new(Mutex::new(NavigationState::new())));
 
     log::info!("Setup complete, entering main loop");
-    spawner.spawn(navigation::run(inputs, outputs).expect("run task failed"));
+    spawner.spawn(navigation::run(inputs, outputs, peripherals, navigation_state).expect("run task failed"));
     spawner.spawn(
-        background_tasks::nfc_scanner(nfc_driver, cardstore, rtc).expect("nfc scanner task failed"),
+        background_tasks::nfc_scanner(nfc_driver, outputs, peripherals, navigation_state).expect("nfc scanner task failed"),
     );
     core::future::pending::<()>().await
 }
@@ -170,6 +196,16 @@ fn display_shit(oled: &mut SecondaryDisplay<'static>, text: &str) {
     oled.flush().unwrap();
 }
 
+fn display_shit_prim(main: &mut PrimaryDisplay<'static>, text: &str) {
+    use embedded_graphics::pixelcolor::Rgb565;
+    main.clear(Rgb565::BLACK).unwrap();
+
+    let text_style = MonoTextStyle::new(&FONT_6X10, Rgb565::WHITE);
+    Text::new(text, Point::new(10, 20), text_style)
+        .draw(main)
+        .unwrap();
+}
+
 fn retry<T, U, F: FnMut(T) -> Result<U, T>>(repetitions: u32, input: T, mut action: F) -> U {
     let mut initial_state = input;
     for iteration in 0..repetitions {

src/drivers/primary_lcd.rs

@@ -1,3 +1,6 @@
+use core::error::Error;
+use core::fmt::Debug;
+use core::fmt::Display;
 use display_interface_spi::SPIInterface;
 use embedded_graphics::draw_target::DrawTarget;
 use embedded_graphics::pixelcolor::Rgb565;
@@ -6,10 +9,27 @@ use embedded_hal_bus::spi::AtomicDevice;
 use embedded_hal_bus::util::AtomicCell;
 use esp_hal::delay::Delay;
 use esp_hal::gpio::Output;
-use ili9341::{DisplaySize240x320, Ili9341, Orientation};
+use ili9341::{DisplayError, DisplaySize240x320, Ili9341, Orientation};
 
 use crate::drivers::spi_bus::{DisplaySpiBus, SharedOutput};
 
+#[derive(Debug)]
+pub struct PrimaryDisplayError(DisplayError);
+
+impl Display for PrimaryDisplayError {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        self.0.fmt(f)
+    }
+}
+
+impl Error for PrimaryDisplayError {}
+
+impl From<DisplayError> for PrimaryDisplayError {
+    fn from(value: DisplayError) -> Self {
+        Self(value)
+    }
+}
+
 type GenericPrimaryDisplay<'a, BUS, DC, RES> =
     Ili9341<SPIInterface<AtomicDevice<'a, BUS, Output<'a>, Delay>, DC>, RES>;
 pub type PrimaryDisplay<'a> =

src/drivers/spi_bus.rs

@@ -158,14 +158,7 @@ where
             OutputConfig::default(),
         ));
 
-        let primary = PrimaryDisplayPinConfiguration {
+        // Secondary displays must come first or they don't work in wokwi for some reason.
-            spi_bus: bus_static,
-            cs: low_active(self.cs_primary),
-            reset: low_active(self.reset_primary),
-            dc: dc.clone(),
-        }
-        .build();
-
         let secondaries = SecondaryDisplayPinConfiguration {
             spi_bus: bus_static,
             cs_pins: [
@@ -174,6 +167,14 @@ where
                 low_active(self.cs_secondary_3),
             ],
             res: reset_secondary,
+            dc: dc.clone(),
+        }
+        .build();
+        
+        let primary = PrimaryDisplayPinConfiguration {
+            spi_bus: bus_static,
+            cs: low_active(self.cs_primary),
+            reset: low_active(self.reset_primary),
             dc,
         }
         .build();

src/lib.rs

@@ -10,5 +10,5 @@ pub mod drivers;
 pub mod logging;
 pub mod navigation;
 pub mod network;
-pub mod storage;
+pub mod peripherals;
 pub mod views;

src/navigation/navigation.rs

@@ -3,7 +3,13 @@ use crate::navigation::inputs::ButtonAction;
 use crate::navigation::inputs::Inputs;
 use crate::navigation::outputs::Outputs;
 use crate::navigation::state::NavigationState;
+use crate::peripherals::Peripherals;
+use crate::views::error_view::ErrorView;
 use crate::views::view::View;
+use alloc::boxed::Box;
+use alloc::string::String;
+use alloc::string::ToString;
+use core::error;
 
 use embassy_futures::select::{Either, select};
 use embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex;
@@ -27,18 +33,64 @@ pub struct NewState {
 }
 
 pub trait Navigable {
-    fn display(&self, outputs: &mut Outputs) -> impl core::future::Future<Output = ()> + Send;
+    fn display(
+        &self,
+        outputs: &mut Outputs,
+        peripherals: &Peripherals,
+    ) -> impl core::future::Future<Output = Result<(), Box<dyn error::Error>>> + Send;
     fn handle_input(&self, input: Action) -> impl core::future::Future<Output = NewState> + Send;
 }
 
+pub async fn display_error(
+    error: String,
+    navigation_state: &Mutex<NavigationState>,
+    outputs: &Mutex<Outputs>,
+    peripherals: &Peripherals,
+) -> () {
+    let error_view = ErrorView {
+        error: error.to_string(),
+    };
+    let mut state = navigation_state.lock().await;
+    state.screens.push(View::Error(error_view));
+    let mut outs = outputs.lock().await;
+    state
+        .screens
+        .last()
+        // Unwrap: we just pushed the state
+        .unwrap()
+        .display(&mut outs, peripherals)
+        .await
+        // Unwrap: display will panic on error in error view
+        .unwrap();
+}
+
 #[embassy_executor::task]
-pub async fn run(mut inputs: Inputs, mut outputs: Outputs) {
+pub async fn run(
+    mut inputs: Inputs,
+    outputs: &'static Mutex<Outputs>,
+    peripherals: &'static Peripherals,
+    navigation_state: &'static Mutex<NavigationState>,
+) {
     log::info!("starting navigation");
 
-    let mut state = NavigationState::new();
+    {
-    state.screens.last().unwrap().display(&mut outputs).await;
+        let mut outs = outputs.lock().await;
+        if let Err(error) = navigation_state
+            .lock()
+            .await
+            .screens
+            .last()
+            .unwrap()
+            .display(&mut outs, peripherals)
+            .await
+        {
+            display_error(error.to_string(), navigation_state, outputs, peripherals).await;
+        };
+    }
 
     loop {
+        Timer::after(Duration::from_millis(DEBOUNCE_DURATION_MILLIS)).await;
+        let mut state = navigation_state.lock().await;
         let selection = select(
             inputs.wait_for_press(),
             Timer::after(Duration::from_millis(DEBOUNCE_DURATION_MILLIS)),
@@ -81,10 +133,16 @@ pub async fn run(mut inputs: Inputs, mut outputs: Outputs) {
         }
         state.screens.push(new_state.view);
 
-        if action != Action::Timer || new_state.redraw {
+        let mut outs = outputs.lock().await;
-            state.screens.last().unwrap().display(&mut outputs).await;
+        if (action != Action::Timer || new_state.redraw)
+            && let Err(error) = state
+                .screens
+                .last()
+                .unwrap()
+                .display(&mut outs, peripherals)
+                .await
+        {
+            display_error(error.to_string(), navigation_state, outputs, peripherals).await;
         }
-
-        Timer::after(Duration::from_millis(DEBOUNCE_DURATION_MILLIS)).await;
     }
 }

src/peripherals.rs

@@ -0,0 +1,11 @@
+pub mod storage;
+
+use crate::navigation::navigation::Mutex;
+use crate::peripherals::storage::store::Store;
+
+use esp_hal::rtc_cntl::Rtc;
+
+pub struct Peripherals {
+    pub store: Mutex<Store>,
+    pub rtc: Rtc<'static>,
+}

src/peripherals/storage.rs

@@ -1,6 +1,6 @@
 pub struct MemoryRegion {
-    offset: u32,
+    pub offset: u32,
-    size: usize,
+    pub size: usize,
 }
 
 impl MemoryRegion {
@@ -15,17 +15,18 @@ impl MemoryRegion {
     }
 }
 
-const MAX_FLASH: usize = 16 * 1024 * 1024;
+pub const MAX_FLASH: usize = 16 * 1024 * 1024;
 
-const MAGIC_REGION: MemoryRegion = MemoryRegion::new(0, 4);
+pub const MAGIC_REGION: MemoryRegion = MemoryRegion::new(0, 4);
 
-const SETTINGS_REGION: MemoryRegion = MemoryRegion::new(MAGIC_REGION.end() as u32, 1024);
+pub const SETTINGS_REGION: MemoryRegion = MemoryRegion::new(MAGIC_REGION.end() as u32, 1024);
 
-const CARDSTORE_REGION: MemoryRegion = MemoryRegion::new(
+pub const CARDSTORE_REGION: MemoryRegion = MemoryRegion::new(
     SETTINGS_REGION.end() as u32,
     MAX_FLASH - SETTINGS_REGION.end(),
 );
 
 pub mod cardstore;
+pub mod flash_store;
 pub mod settings;
 pub mod store;

src/peripherals/storage/cardstore.rs

@@ -1,14 +1,16 @@
 use alloc::collections::BTreeMap;
 use alloc::vec::Vec;
+use core::error::Error;
+use core::fmt::Display;
 
 use binary_serde::{BinarySerde, DeserializeError, Endianness};
 
 //use crate::card::model::Nfcraw_card;
 
 use crate::card::model::RawCard;
-use crate::storage::store::{Store, StoreError};
+use crate::peripherals::storage::flash_store::{FlashStore, FlashStoreError};
 
-use crate::storage::{CARDSTORE_REGION, MemoryRegion};
+use crate::peripherals::storage::{CARDSTORE_REGION, MemoryRegion};
 
 const MAX_CARDS: usize = 20000;
 
@@ -65,13 +67,25 @@ impl AllocationTableEntry {
 
 #[derive(Debug)]
 pub enum CardStoreError {
-    Store(StoreError),
+    Store(FlashStoreError),
     CorruptedEntry(DeserializeError),
-    NoEntry,
+    NoEntry(u32),
 }
 
-impl From<StoreError> for CardStoreError {
+impl Error for CardStoreError {}
-    fn from(error: StoreError) -> CardStoreError {
+
+impl Display for CardStoreError {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        match self {
+            CardStoreError::Store(e) => e.fmt(f),
+            CardStoreError::CorruptedEntry(e) => e.fmt(f),
+            CardStoreError::NoEntry(uuid) => write!(f, "No Card Entry\nuuid: 0x{uuid:x}"),
+        }
+    }
+}
+
+impl From<FlashStoreError> for CardStoreError {
+    fn from(error: FlashStoreError) -> CardStoreError {
         CardStoreError::Store(error)
     }
 }
@@ -83,16 +97,16 @@ impl From<DeserializeError> for CardStoreError {
 }
 
 pub struct CardStore {
-    store: Store,
+    store: &'static FlashStore,
     count: u32,
     pub allocation_table: BTreeMap<u32, AllocationTableEntry>,
 }
 
 impl CardStore {
-    pub fn new(mut store: Store) -> Result<Self, CardStoreError> {
+    pub async fn new(store: &'static FlashStore) -> Result<Self, CardStoreError> {
         let mut count_bytes: [u8; COUNT_REGION.size] = [0; COUNT_REGION.size];
 
-        store.read(COUNT_REGION.offset, &mut count_bytes)?;
+        store.read(COUNT_REGION.offset, &mut count_bytes).await?;
 
         let count: u32 = u32::from_ne_bytes(count_bytes);
 
@@ -101,10 +115,12 @@ impl CardStore {
         let mut allocation_table_entries: Vec<u8> =
             Vec::with_capacity(AllocationTableEntry::SERIALIZED_SIZE * count as usize);
 
-        store.read(
+        store
+            .read(
                 ALLOCATION_TABLE_REGION.offset,
                 &mut allocation_table_entries,
-        )?;
+            )
+            .await?;
 
         let chunks =
             allocation_table_entries.into_chunks::<{ AllocationTableEntry::SERIALIZED_SIZE }>();
@@ -123,14 +139,14 @@ impl CardStore {
         })
     }
 
-    pub fn get_card_by_uuid(&mut self, uuid: u32) -> Result<RawCard, CardStoreError> {
+    pub async fn get_card_by_uuid(&self, uuid: u32) -> Result<RawCard, CardStoreError> {
         let entry = self
             .allocation_table
             .get(&uuid)
-            .ok_or(CardStoreError::NoEntry)?;
+            .ok_or(CardStoreError::NoEntry(uuid))?;
 
         let mut raw_card: [u8; size_of::<RawCard>()] = [0; size_of::<RawCard>()];
-        self.store.read(entry.offset, &mut raw_card)?;
+        self.store.read(entry.offset, &mut raw_card).await?;
 
         Ok(RawCard::binary_deserialize(
             raw_card.as_ref(),
@@ -138,7 +154,7 @@ impl CardStore {
         )?)
     }
 
-    pub fn save_raw_card(
+    pub async fn save_raw_card(
         &mut self,
         raw_card: RawCard,
         timestamp: u64,
@@ -183,10 +199,12 @@ impl CardStore {
             log::debug!("writing RawCard to flash");
             let mut serialized_card: [u8; RawCard::SERIALIZED_SIZE] = [0; RawCard::SERIALIZED_SIZE];
             raw_card.binary_serialize(&mut serialized_card, Endianness::Little);
-            self.store.write_erase(
+            self.store
+                .write_erase(
                     CARDS_REGION.offset + entry.offset * RawCard::SERIALIZED_SIZE as u32,
                     &mut serialized_card,
-            )?;
+                )
+                .await?;
         } else {
             entry.last_read_date = timestamp;
             entry.read_count += 1;
@@ -198,17 +216,20 @@ impl CardStore {
         let mut serialized_entry: [u8; AllocationTableEntry::SERIALIZED_SIZE] =
             [0; AllocationTableEntry::SERIALIZED_SIZE];
         entry.binary_serialize(&mut serialized_entry, Endianness::Little);
-        self.store.write_erase(
+        self.store
+            .write_erase(
                 ALLOCATION_TABLE_REGION.offset
                     + entry.offset * AllocationTableEntry::SERIALIZED_SIZE as u32,
                 &mut serialized_entry,
-        )?;
+            )
+            .await?;
 
         self.count += 1;
         log::debug!("writing card count to flash");
         let mut serialized_count: [u8; 4] = self.count.to_le_bytes();
         self.store
-            .write(COUNT_REGION.offset, serialized_count.as_mut_slice())?;
+            .write(COUNT_REGION.offset, serialized_count.as_mut_slice())
+            .await?;
         Ok(())
     }
 }

src/peripherals/storage/flash_store.rs

@@ -1,22 +1,41 @@
+use core::error::Error;
+use core::fmt::Display;
+
+use crate::navigation::navigation::Mutex;
 use embedded_storage::nor_flash::NorFlash;
 use embedded_storage::nor_flash::ReadNorFlash;
 use esp_storage::{FlashStorage, FlashStorageError};
 
-use crate::storage::MAGIC_REGION;
+use crate::peripherals::storage::MAGIC_REGION;
 
-pub type StoreError = FlashStorageError;
+#[derive(Debug)]
+pub struct FlashStoreError(FlashStorageError);
+
+impl From<FlashStorageError> for FlashStoreError {
+    fn from(value: FlashStorageError) -> Self {
+        Self(value)
+    }
+}
+
+impl Error for FlashStoreError {}
+
+impl Display for FlashStoreError {
+    fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
+        write!(f, "FlashStoreError:\n{:?}", self.0)
+    }
+}
 
 const FLASH_ADDR: u32 = 0x9000;
 
 const INITIALIZATION_SIZE: usize = 0x1000;
 const FLASH_INITIALIZE_MAGIC: u32 = 0xde6de6de;
 
-pub struct Store {
+pub struct FlashStore {
-    pub storage: FlashStorage<'static>,
+    pub storage: Mutex<FlashStorage<'static>>,
 }
 
-impl Store {
+impl FlashStore {
-    pub fn new(flash: esp_hal::peripherals::FLASH<'static>) -> Result<Self, StoreError> {
+    pub fn new(flash: esp_hal::peripherals::FLASH<'static>) -> Result<Self, FlashStoreError> {
         let mut storage = FlashStorage::new(flash);
 
         let mut magic: [u8; 4] = [0, 0, 0, 0];
@@ -30,29 +49,40 @@ impl Store {
             Self::initialize_flash(&mut storage)?;
         }
 
-        Ok(Self { storage })
+        Ok(Self {
+            storage: Mutex::new(storage),
+        })
     }
 
-    pub fn read(&mut self, offset: u32, bytes: &mut [u8]) -> Result<(), StoreError> {
+    pub async fn read(&self, offset: u32, bytes: &mut [u8]) -> Result<(), FlashStoreError> {
-        self.storage.read(FLASH_ADDR + offset, bytes)
+        self.storage.lock().await.read(FLASH_ADDR + offset, bytes)?;
+        Ok(())
     }
 
-    pub fn write(&mut self, offset: u32, bytes: &mut [u8]) -> Result<(), StoreError> {
+    pub async fn write(&self, offset: u32, bytes: &mut [u8]) -> Result<(), FlashStoreError> {
         log::debug!("Writing {} bytes at offset 0x{offset:08x}", bytes.len());
-        self.storage.write(FLASH_ADDR + offset, bytes)
+        self.storage
+            .lock()
+            .await
+            .write(FLASH_ADDR + offset, bytes)?;
+        Ok(())
     }
 
-    pub fn write_erase(&mut self, offset: u32, bytes: &mut [u8]) -> Result<(), StoreError> {
+    pub async fn write_erase(&self, offset: u32, bytes: &mut [u8]) -> Result<(), FlashStoreError> {
         log::debug!(
             "Erasing and Writing {} bytes at offset 0x{offset:08x}",
             bytes.len()
         );
-        self.storage
+        let mut lock = self.storage.lock().await;
-            .erase(FLASH_ADDR + offset, FLASH_ADDR + bytes.len() as u32)?;
+        lock.erase(
-        self.storage.write(FLASH_ADDR + offset, bytes)
+            FLASH_ADDR + offset,
+            FLASH_ADDR + offset + bytes.len() as u32,
+        )?;
+        lock.write(FLASH_ADDR + offset, bytes)?;
+        Ok(())
     }
 
-    pub fn has_magic_bytes(storage: &mut FlashStorage) -> Result<bool, StoreError> {
+    pub fn has_magic_bytes(storage: &mut FlashStorage) -> Result<bool, FlashStoreError> {
         let mut magic: [u8; 4] = [0, 0, 0, 0];
         storage.read(FLASH_ADDR + MAGIC_REGION.offset, &mut magic)?;
         log::debug!("Magic bytes are {magic:?}");
@@ -60,7 +90,7 @@ impl Store {
         Ok(u32::from_ne_bytes(magic) == FLASH_INITIALIZE_MAGIC)
     }
 
-    pub fn initialize_flash(storage: &mut FlashStorage) -> Result<(), StoreError> {
+    pub fn initialize_flash(storage: &mut FlashStorage) -> Result<(), FlashStoreError> {
         storage.erase(FLASH_ADDR, FLASH_ADDR + INITIALIZATION_SIZE as u32)?;
         let zeros: [u8; INITIALIZATION_SIZE] = [0; INITIALIZATION_SIZE];
         storage.write(FLASH_ADDR + MAGIC_REGION.end() as u32, &zeros)?;
@@ -72,7 +102,9 @@ impl Store {
         if Self::has_magic_bytes(storage)? {
             Ok(())
         } else {
-            Err(StoreError::Other(FLASH_INITIALIZE_MAGIC as i32))
+            Err(FlashStoreError(FlashStorageError::Other(
+                FLASH_INITIALIZE_MAGIC as i32,
+            )))
         }
     }
 }

src/peripherals/storage/store.rs

@@ -0,0 +1,7 @@
+use crate::peripherals::storage::cardstore::CardStore;
+use crate::peripherals::storage::flash_store::FlashStore;
+
+pub struct Store {
+    pub flash_store: &'static FlashStore,
+    pub card_store: CardStore,
+}

src/views.rs

@@ -1,4 +1,5 @@
 pub mod card_view;
+pub mod error_view;
 pub mod flash_info_view;
 pub mod journal_view;
 pub mod main_menu;

src/views/card_view.rs

@@ -1,7 +1,11 @@
 use crate::display::sprite::render_sprite_onto_ili9341;
+use crate::drivers::primary_lcd::PrimaryDisplayError;
 use crate::navigation::navigation::NewState;
 use crate::navigation::outputs::Outputs;
+use crate::peripherals::Peripherals;
+use alloc::boxed::Box;
 use alloc::format;
+use core::error;
 use embedded_graphics::mono_font::MonoTextStyle;
 use embedded_graphics::mono_font::ascii::FONT_6X10;
 use embedded_graphics::pixelcolor::Rgb565;
@@ -25,10 +29,16 @@ pub struct CardView {
 }
 
 impl Navigable for CardView {
-    fn display(&self, outputs: &mut Outputs) -> impl core::future::Future<Output = ()> + Send {
+    fn display(
+        &self,
+        outputs: &mut Outputs,
+        _: &Peripherals,
+    ) -> impl core::future::Future<Output = Result<(), Box<dyn error::Error>>> + Send {
         async move {
             let display = &mut outputs.primary_display;
-            display.clear(Rgb565::BLACK).unwrap();
+            display
+                .clear(Rgb565::BLACK)
+                .map_err(PrimaryDisplayError::from)?;
 
             let background = Rectangle::new(Point::new(0, 0), Size::new(240, 320));
             let bg_color = self.card.cardtype.clone().into();
@@ -42,59 +52,60 @@ impl Navigable for CardView {
                 style,
             )
             .draw(display)
-            .unwrap();
+            .map_err(PrimaryDisplayError::from)?;
             Text::new(
                 &format!("Type: {}", self.card.cardtype),
                 Point::new(20, 250),
                 style,
             )
             .draw(display)
-            .unwrap();
+            .map_err(PrimaryDisplayError::from)?;
             Text::new(
                 &format!("Event: {}", self.card.event),
                 Point::new(20, 260),
                 style,
             )
             .draw(display)
-            .unwrap();
+            .map_err(PrimaryDisplayError::from)?;
             Text::new(
                 &format!("UUID: {}", self.card.uuid),
                 Point::new(20, 270),
                 style,
             )
             .draw(display)
-            .unwrap();
+            .map_err(PrimaryDisplayError::from)?;
             Text::new(
                 &format!("Trait1: {}", self.card.trait1),
                 Point::new(20, 280),
                 style,
             )
             .draw(display)
-            .unwrap();
+            .map_err(PrimaryDisplayError::from)?;
             Text::new(
                 &format!("Trait2: {}", self.card.trait2),
                 Point::new(20, 290),
                 style,
             )
             .draw(display)
-            .unwrap();
+            .map_err(PrimaryDisplayError::from)?;
             Text::new(
                 &format!("Trait3: {}", self.card.trait3),
                 Point::new(20, 300),
                 style,
             )
             .draw(display)
-            .unwrap();
+            .map_err(PrimaryDisplayError::from)?;
             Text::new(
                 &format!("Secret: {}", self.card.secret),
                 Point::new(20, 310),
                 style,
             )
             .draw(display)
-            .unwrap();
+            .map_err(PrimaryDisplayError::from)?;
 
             let palette: Palette = self.card.cardtype.clone().into();
             render_sprite_onto_ili9341(display, self.card.sprite.data.as_slice(), &palette);
+            Ok(())
         }
     }
 

src/views/error_view.rs

@@ -0,0 +1,101 @@
+use crate::navigation::navigation::Action;
+use crate::navigation::navigation::Navigable;
+use crate::navigation::navigation::NewState;
+use crate::navigation::outputs::Outputs;
+use crate::peripherals::Peripherals;
+use crate::views::view::View;
+use alloc::boxed::Box;
+use alloc::string::String;
+use alloc::string::ToString;
+use core::error;
+use embedded_graphics::{
+    Drawable,
+    mono_font::{MonoTextStyle, ascii::FONT_10X20},
+    pixelcolor::Rgb565,
+    prelude::*,
+    primitives::Rectangle,
+    text::Text,
+};
+
+use embedded_text::{
+    TextBox,
+    alignment::HorizontalAlignment,
+    style::{HeightMode, TextBoxStyleBuilder},
+};
+#[derive(Debug, Clone)]
+pub struct ErrorView {
+    pub error: String,
+}
+
+impl Navigable for ErrorView {
+    fn display(
+        &self,
+        outputs: &mut Outputs,
+        _: &Peripherals,
+    ) -> impl core::future::Future<Output = Result<(), Box<dyn error::Error>>> + Send {
+        async move {
+            outputs
+                .primary_display
+                .clear(Rgb565::BLACK)
+                .unwrap_or_else(|error| {
+                    panic!(
+                        "Error: {error:?}\nDraw error while rendering ErrorView: {}",
+                        self.error
+                    )
+                });
+            let style = MonoTextStyle::new(&FONT_10X20, Rgb565::RED);
+            let display_area = outputs.primary_display.bounding_box();
+            Text::new(
+                "Error",
+                Point::new((display_area.size.width / 2 - 25) as i32, 30),
+                style,
+            )
+            .draw(&mut outputs.primary_display)
+            .unwrap_or_else(|error| {
+                panic!(
+                    "Error: {error:?}\nDraw error while rendering ErrorView: {}",
+                    self.error
+                )
+            });
+
+            let style = MonoTextStyle::new(&FONT_10X20, Rgb565::WHITE);
+            let textbox_style = TextBoxStyleBuilder::new()
+                .height_mode(HeightMode::FitToText)
+                .alignment(HorizontalAlignment::Center)
+                .build();
+
+            let bounds = Rectangle::new(Point::new(0, 50), display_area.size);
+
+            TextBox::with_textbox_style(&self.error.to_string(), bounds, style, textbox_style)
+                .draw(&mut outputs.primary_display)
+                .unwrap_or_else(|error| {
+                    panic!(
+                        "Error: {error:?}\nDraw error while rendering ErrorView: {}",
+                        self.error
+                    )
+                });
+            Ok(())
+        }
+    }
+
+    fn handle_input(&self, input: Action) -> impl core::future::Future<Output = NewState> + Send {
+        async move {
+            let new_menu = View::Error(self.clone());
+            match input {
+                Action::Button(_) => NewState {
+                    replace_view: matches!(new_menu, View::FlashInfo(_)),
+                    view: new_menu,
+                    redraw: true,
+                },
+                Action::Timer => {
+                    // Skip timer inputs
+                    NewState {
+                        view: new_menu,
+                        replace_view: true,
+                        redraw: false,
+                    }
+                }
+            }
+        }
+    }
+}

src/views/flash_info_view.rs

@@ -1,48 +1,106 @@
-use crate::navigation::inputs::ButtonAction;
+use crate::drivers::primary_lcd::PrimaryDisplayError;
 use crate::navigation::navigation::Action;
 use crate::navigation::navigation::Navigable;
 use crate::navigation::navigation::NewState;
 use crate::navigation::outputs::Outputs;
+use crate::peripherals::Peripherals;
+use crate::peripherals::storage::MAGIC_REGION;
+use crate::peripherals::storage::cardstore::COUNT_REGION;
 use crate::views::view::View;
-use embedded_graphics::mono_font::MonoTextStyle;
+use alloc::boxed::Box;
-use embedded_graphics::mono_font::ascii::FONT_10X20;
+use core::error;
-use embedded_graphics::pixelcolor::Rgb565;
-use embedded_graphics::prelude::DrawTarget;
-use embedded_graphics::prelude::RgbColor;
-use embedded_graphics::text::Text;
-
 use embedded_graphics::prelude::Point;
+use embedded_graphics::{
+    Drawable,
+    mono_font::{MonoTextStyle, ascii::FONT_10X20},
+    pixelcolor::Rgb565,
+    prelude::*,
+    primitives::Rectangle,
+};
 
+use alloc::format;
+use embedded_text::{
+    TextBox,
+    alignment::HorizontalAlignment,
+    style::{HeightMode, TextBoxStyleBuilder},
+};
 #[derive(Debug, Clone)]
 pub struct FlashInfoView {}
 
 impl Navigable for FlashInfoView {
-    fn display(&self, outputs: &mut Outputs) -> impl core::future::Future<Output = ()> + Send {
+    fn display(
-        let style = MonoTextStyle::new(&FONT_10X20, Rgb565::WHITE);
+        &self,
-        Text::new("Flash Initialized: {:?}", Point::new(40, 40), style);
+        outputs: &mut Outputs,
+        peripherals: &Peripherals,
+    ) -> impl core::future::Future<Output = Result<(), Box<dyn error::Error>>> + Send {
+        async move {
+            outputs
+                .primary_display
+                .clear(Rgb565::BLACK)
+                .map_err(PrimaryDisplayError::from)?;
+            let _style = MonoTextStyle::new(&FONT_10X20, Rgb565::WHITE);
+            let mut magic_bytes: [u8; MAGIC_REGION.size] = [0; MAGIC_REGION.size];
+            peripherals
+                .store
+                .lock()
+                .await
+                .flash_store
+                .read(MAGIC_REGION.offset, &mut magic_bytes)
+                .await?;
+            let mut card_count_bytes: [u8; COUNT_REGION.size] = [0; COUNT_REGION.size];
+            peripherals
+                .store
+                .lock()
+                .await
+                .flash_store
+                .read(COUNT_REGION.offset, &mut card_count_bytes)
+                .await?;
 
-        core::future::ready(())
+            let style = MonoTextStyle::new(&FONT_10X20, Rgb565::WHITE);
+            let textbox_style = TextBoxStyleBuilder::new()
+                .height_mode(HeightMode::FitToText)
+                .alignment(HorizontalAlignment::Justified)
+                .build();
+
+            let display_area = outputs.primary_display.bounding_box();
+            let bounds = Rectangle::new(Point::new(0, 30), display_area.size);
+
+            TextBox::with_textbox_style(
+                &format!(
+                    "
+Flash Init Magic: 0x{:x}\n
+Card Count: {}\n 
+",
+                    u32::from_le_bytes(magic_bytes),
+                    u32::from_le_bytes(card_count_bytes)
+                ),
+                bounds,
+                style,
+                textbox_style,
+            )
+            .draw(&mut outputs.primary_display)
+            .map_err(PrimaryDisplayError::from)?;
+            Ok(())
+        }
     }
 
     fn handle_input(&self, input: Action) -> impl core::future::Future<Output = NewState> + Send {
         async move {
-            let Action::Button(input) = input else {
+            let new_menu = View::FlashInfo(self.clone());
-                // Skip timer inputs
+            match input {
-                return NewState {
+                Action::Button(_) => NewState {
-                    view: View::FlashInfo(self.clone()),
-                    replace_view: true,
-                    redraw: false,
-                };
-            };
-
-            let new_menu = match input {
-                _ => View::FlashInfo(self.clone()),
-            };
-
-            NewState {
                     replace_view: matches!(new_menu, View::FlashInfo(_)),
                     view: new_menu,
                     redraw: true,
+                },
+                Action::Timer => {
+                    // Skip timer inputs
+                    NewState {
+                        view: new_menu,
+                        replace_view: true,
+                        redraw: false,
+                    }
+                }
             }
         }
     }

src/views/journal_view.rs

@@ -1,3 +1,7 @@
+use crate::drivers::primary_lcd::PrimaryDisplayError;
+use crate::peripherals::Peripherals;
+use alloc::boxed::Box;
+use core::error;
 use core::future;
 
 use alloc::vec::Vec;
@@ -22,9 +26,17 @@ pub struct JournalView {
 }
 
 impl Navigable for JournalView {
-    fn display(&self, outputs: &mut Outputs) -> impl core::future::Future<Output = ()> + Send {
+    fn display(
+        &self,
+        outputs: &mut Outputs,
+        _: &Peripherals,
+    ) -> impl core::future::Future<Output = Result<(), Box<dyn error::Error>>> + Send {
         async move {
-            outputs.primary_display.clear(Rgb565::BLACK).unwrap();
+            outputs
+                .primary_display
+                .clear(Rgb565::BLACK)
+                .map_err(PrimaryDisplayError::from)?;
+            Ok(())
         }
     }
 

src/views/main_menu.rs

@@ -1,4 +1,8 @@
+use crate::drivers::primary_lcd::PrimaryDisplayError;
+use crate::peripherals::Peripherals;
+use alloc::boxed::Box;
 use alloc::vec;
+use core::error;
 
 use crate::card::model::Card;
 use crate::card::{decoder::split_nfc_hex, mock::*};
@@ -22,16 +26,26 @@ pub struct MainMenu {
 }
 
 impl Navigable for MainMenu {
-    fn display(&self, outputs: &mut Outputs) -> impl core::future::Future<Output = ()> + Send {
+    fn display(
+        &self,
+        outputs: &mut Outputs,
+        _: &Peripherals,
+    ) -> impl core::future::Future<Output = Result<(), Box<dyn error::Error>>> + Send {
+        async move {
             let display = &mut outputs.primary_display;
             display.clear(Rgb565::BLACK).unwrap();
 
-        menu_item::show(display, "Scan card", 0, self.selected);
+            menu_item::show(display, "Scan card", 0, self.selected)
-        menu_item::show(display, "Last card", 1, self.selected);
+                .map_err(PrimaryDisplayError::from)?;
-        menu_item::show(display, "Journal", 2, self.selected);
+            menu_item::show(display, "Last card", 1, self.selected)
-        menu_item::show(display, "Settings", 3, self.selected);
+                .map_err(PrimaryDisplayError::from)?;
+            menu_item::show(display, "Journal", 2, self.selected)
+                .map_err(PrimaryDisplayError::from)?;
+            menu_item::show(display, "Settings", 3, self.selected)
+                .map_err(PrimaryDisplayError::from)?;
 
-        core::future::ready(())
+            Ok(())
+        }
     }
 
     fn handle_input(&self, input: Action) -> impl core::future::Future<Output = NewState> + Send {

src/views/menu_item.rs

@@ -7,7 +7,7 @@ use embedded_graphics::prelude::Point;
 use embedded_graphics::prelude::RgbColor;
 use embedded_graphics::text::Text;
 
-pub fn show<D>(display: &mut D, name: &str, position: i32, selected: i32)
+pub fn show<D>(display: &mut D, name: &str, position: i32, selected: i32) -> Result<(), D::Error>
 where
     D: DrawTarget<Color = Rgb565>,
     D::Error: core::fmt::Debug,
@@ -24,6 +24,6 @@ where
             style
         },
     )
-    .draw(display)
+    .draw(display)?;
-    .unwrap();
+    Ok(())
 }

src/views/scan_menu.rs

@@ -1,7 +1,11 @@
+use crate::drivers::primary_lcd::PrimaryDisplayError;
 use crate::navigation::inputs::ButtonAction;
 use crate::navigation::navigation::CARD_DATA;
 use crate::navigation::navigation::NewState;
 use crate::navigation::outputs::Outputs;
+use crate::peripherals::Peripherals;
+use alloc::boxed::Box;
+use core::error;
 
 use alloc::format;
 use embedded_graphics::Drawable;
@@ -33,16 +37,23 @@ pub struct ScanMenu {
 }
 
 impl Navigable for ScanMenu {
-    fn display(&self, outputs: &mut Outputs) -> impl core::future::Future<Output = ()> + Send {
+    fn display(
+        &self,
+        outputs: &mut Outputs,
+        _: &Peripherals,
+    ) -> impl core::future::Future<Output = Result<(), Box<dyn error::Error>>> + Send {
+        async move {
             let display = &mut outputs.primary_display;
             let style = MonoTextStyle::new(&FONT_10X20, Rgb565::WHITE);
-        display.clear(Rgb565::BLACK).unwrap();
+            display
+                .clear(Rgb565::BLACK)
+                .map_err(PrimaryDisplayError::from)?;
 
             let display_area = display.bounding_box();
 
             Text::new("Scanning...", Point::new(20, 30), style)
                 .draw(display)
-            .unwrap();
+                .map_err(PrimaryDisplayError::from)?;
 
             // Create styles used by the drawing operations.
             let arc_stroke = PrimitiveStyleBuilder::new()
@@ -72,15 +83,15 @@ impl Navigable for ScanMenu {
             )
             .into_styled(arc_stroke)
             .draw(display)
-        .unwrap();
+            .map_err(PrimaryDisplayError::from)?;
 
             // Draw centered text.
             let text = format!("{:.2}%", 100. * (self.progress as f32) / 255.);
             Text::with_text_style(&text, display_area.center(), character_style, text_style)
                 .draw(display)
-            .unwrap();
+                .map_err(PrimaryDisplayError::from)?;
-
+            Ok(())
-        core::future::ready(())
+        }
     }
 
     fn handle_input(&self, input: Action) -> impl core::future::Future<Output = NewState> + Send {

src/views/settings_menu.rs

@@ -1,6 +1,10 @@
+use crate::drivers::primary_lcd::PrimaryDisplayError;
 use crate::navigation::navigation::{Action, Navigable, NewState};
 use crate::navigation::outputs::Outputs;
+use crate::peripherals::Peripherals;
 use crate::views::{flash_info_view::FlashInfoView, menu_item, view::View};
+use alloc::boxed::Box;
+use core::error;
 
 use crate::navigation::inputs::ButtonAction;
 
@@ -8,7 +12,7 @@ use embedded_graphics::pixelcolor::Rgb565;
 use embedded_graphics::prelude::RgbColor;
 use embedded_graphics_core::draw_target::DrawTarget;
 
-pub const MAX_SELECTED: i32 = 2;
+pub const MAX_SELECTED: i32 = 3;
 
 #[derive(Debug, Clone)]
 pub struct SettingsMenu {
@@ -16,14 +20,24 @@ pub struct SettingsMenu {
 }
 
 impl Navigable for SettingsMenu {
-    fn display(&self, outputs: &mut Outputs) -> impl core::future::Future<Output = ()> + Send {
+    fn display(
+        &self,
+        outputs: &mut Outputs,
+        _: &Peripherals,
+    ) -> impl core::future::Future<Output = Result<(), Box<dyn error::Error>>> + Send {
+        async move {
             let display = &mut outputs.primary_display;
-        display.clear(Rgb565::BLACK).unwrap();
+            display
-        menu_item::show(display, "System Inforation", 0, self.selected);
+                .clear(Rgb565::BLACK)
-        menu_item::show(display, "Wifi Information", 1, self.selected);
+                .map_err(PrimaryDisplayError::from)?;
-        menu_item::show(display, "Flash Information", 2, self.selected);
+            menu_item::show(display, "System Inforation", 0, self.selected)
-
+                .map_err(PrimaryDisplayError::from)?;
-        core::future::ready(())
+            menu_item::show(display, "Wifi Information", 1, self.selected)
+                .map_err(PrimaryDisplayError::from)?;
+            menu_item::show(display, "Flash Information", 2, self.selected)
+                .map_err(PrimaryDisplayError::from)?;
+            Ok(())
+        }
     }
 
     fn handle_input(&self, input: Action) -> impl core::future::Future<Output = NewState> + Send {

src/views/view.rs

@@ -1,14 +1,18 @@
 use crate::navigation::outputs::Outputs;
+use crate::peripherals::Peripherals;
 use crate::views::card_view::CardView;
 use crate::views::{
-    flash_info_view::FlashInfoView, journal_view::JournalView, main_menu::MainMenu,
+    error_view::ErrorView, flash_info_view::FlashInfoView, journal_view::JournalView,
-    scan_menu::ScanMenu, settings_menu::SettingsMenu,
+    main_menu::MainMenu, scan_menu::ScanMenu, settings_menu::SettingsMenu,
 };
+use alloc::boxed::Box;
+use core::error;
 
 use crate::navigation::navigation::{Navigable, NewState};
 
 #[derive(Debug, Clone)]
 pub enum View {
+    Error(ErrorView),
     Main(MainMenu),
     Scan(ScanMenu),
     Settings(SettingsMenu),
@@ -18,15 +22,22 @@ pub enum View {
 }
 
 impl Navigable for View {
-    fn display(&self, outputs: &mut Outputs) -> impl core::future::Future<Output = ()> + Send {
+    fn display(
+        &self,
+        outputs: &mut Outputs,
+        peripherals: &Peripherals,
+    ) -> impl core::future::Future<Output = Result<(), Box<dyn error::Error>>> + Send {
         async move {
             match self {
-                View::Main(main_menu) => main_menu.display(outputs).await,
+                View::Error(error_view) => error_view.display(outputs, peripherals).await,
-                View::Scan(scan_menu) => scan_menu.display(outputs).await,
+                View::Main(main_menu) => main_menu.display(outputs, peripherals).await,
-                View::Settings(settings_menu) => settings_menu.display(outputs).await,
+                View::Scan(scan_menu) => scan_menu.display(outputs, peripherals).await,
-                View::Journal(journal_view) => journal_view.display(outputs).await,
+                View::Settings(settings_menu) => settings_menu.display(outputs, peripherals).await,
-                View::Card(card_view) => card_view.display(outputs).await,
+                View::Journal(journal_view) => journal_view.display(outputs, peripherals).await,
-                View::FlashInfo(flash_info_view) => flash_info_view.display(outputs).await,
+                View::Card(card_view) => card_view.display(outputs, peripherals).await,
+                View::FlashInfo(flash_info_view) => {
+                    flash_info_view.display(outputs, peripherals).await
+                }
             }
         }
     }
@@ -37,6 +48,7 @@ impl Navigable for View {
     ) -> impl core::future::Future<Output = NewState> + Send {
         async move {
             match self {
+                View::Error(error_view) => error_view.handle_input(input).await,
                 View::Main(main_menu) => main_menu.handle_input(input).await,
                 View::Scan(scan_menu) => scan_menu.handle_input(input).await,
                 View::Settings(settings_menu) => settings_menu.handle_input(input).await,

wokwi.toml

@@ -3,3 +3,7 @@ version = 1
 gdbServerPort = 3333
 elf = "target/xtensa-esp32s3-none-elf/debug/creaturedex"
 firmware = "target/xtensa-esp32s3-none-elf/debug/creaturedex"
+
+[[chip]]
+name = 'ch1115' 
+binary = 'wokwi/ch1115.chip.wasm'

wokwi/Makefile

@@ -0,0 +1,36 @@
+.PHONY: all auto native docker clean
+
+# Configuration
+SRC = ch1115.chip.c
+OUT = ch1115.chip.wasm
+
+# Check if wokwi-cli exists in PATH
+WOKWI_CLI := $(shell command -v wokwi-cli 2> /dev/null)
+
+HOST_UID := $(shell id -u)
+HOST_GID := $(shell id -g)
+
+# Default target runs the auto-detection
+all: auto
+
+auto:
+ifeq ($(WOKWI_CLI),)
+	@echo "wokwi-cli not found in PATH. Falling back to Docker build..."
+	$(MAKE) docker
+else
+	@echo "Found wokwi-cli at $(WOKWI_CLI). Using native build..."
+	$(MAKE) native
+endif
+
+native:
+	wokwi-cli chip compile $(SRC) -o $(OUT)
+
+docker:
+	docker run --rm -v $(CURDIR):/workspace -w /workspace ubuntu:latest \
+		bash -c "apt-get update && apt-get install -y --no-install-recommends curl ca-certificates && \
+		curl -L https://wokwi.com/ci/install.sh | sh && \
+		~/.wokwi/bin/wokwi-cli chip compile $(SRC) -o $(OUT) && \
+		chown $(HOST_UID):$(HOST_GID) $(OUT)"
+
+clean:
+	rm -f $(OUT)

wokwi/ch1115.chip.c

@@ -0,0 +1,86 @@
+#include "wokwi-api.h"
+#include <stdlib.h>
+#include <stdio.h>
+
+typedef struct {
+  pin_t cs, dc, res;
+  spi_dev_t spi;
+  buffer_t fb;
+  uint32_t width, height;
+  uint8_t spi_buffer[1];
+  uint8_t page;
+  uint8_t col;
+} chip_state_t;
+
+// Forward declarations
+static void on_cs_change(void *user_data, pin_t pin, uint32_t value);
+static void chip_spi_done(void *user_data, uint8_t *buffer, uint32_t count);
+
+void chip_init(void) {
+  printf("Initing CH1115 chip\n");
+  fflush(stdout);
+
+  chip_state_t *chip = malloc(sizeof(chip_state_t));
+  chip->fb = framebuffer_init(&chip->width, &chip->height);
+  
+  chip->cs = pin_init("CS", INPUT_PULLUP);
+  chip->dc = pin_init("DC", INPUT);
+  chip->res = pin_init("RES", INPUT_PULLUP);
+
+  const spi_config_t spi_cfg = {
+    .sck = pin_init("SCL", INPUT),
+    .mosi = pin_init("SDA", INPUT),
+    .miso = NO_PIN,
+    .mode = 0,
+    .done = chip_spi_done,
+    .user_data = chip,
+  };
+  chip->spi = spi_init(&spi_cfg);
+
+  const pin_watch_config_t cs_watch = {
+    .edge = BOTH,
+    .pin_change = on_cs_change,
+    .user_data = chip,
+  };
+  pin_watch(chip->cs, &cs_watch);
+}
+
+static void on_cs_change(void *user_data, pin_t pin, uint32_t value) {
+  chip_state_t *chip = (chip_state_t*)user_data;
+  if (value == LOW) {
+    // Start receiving 1 byte at a time
+    spi_start(chip->spi, chip->spi_buffer, 1);
+  } else {
+    spi_stop(chip->spi);
+  }
+}
+
+static void chip_spi_done(void *user_data, uint8_t *buffer, uint32_t count) {
+  chip_state_t *chip = (chip_state_t*)user_data;
+  if (!count) return;
+
+  uint8_t val = buffer[0];
+  bool is_data = pin_read(chip->dc) == HIGH;
+
+  if (is_data) {
+    // Write 8 vertical pixels to the Wokwi RGBA Framebuffer
+    for (int i = 0; i < 8; i++) {
+      // 0xFFFFFFFF = White, 0x000000FF = Black
+      uint32_t color = (val & (1 << i)) ? 0xFFFFFFFF : 0x000000FF; 
+      uint32_t y = (chip->page * 8) + i;
+      uint32_t offset = (y * chip->width + chip->col) * 4;
+      buffer_write(chip->fb, offset, &color, 4);
+    }
+    chip->col++; // Auto-increment column
+  } else {
+    // CH1115 Core Commands
+    if ((val & 0xB0) == 0xB0) chip->page = val & 0x0F; // Set Page Start
+    else if ((val & 0xF0) == 0x00) chip->col = (chip->col & 0xF0) | (val & 0x0F); // Lower Col
+    else if ((val & 0xF0) == 0x10) chip->col = (chip->col & 0x0F) | ((val & 0x0F) << 4); // Upper Col
+  }
+
+  // Continue receiving if CS is still active
+  if (pin_read(chip->cs) == LOW) {
+    spi_start(chip->spi, chip->spi_buffer, 1);
+  }
+}

wokwi/ch1115.chip.json

@@ -0,0 +1,9 @@
+{
+  "name": "CH1115 OLED",
+  "author": "ede1998",
+  "pins": ["VCC", "GND", "CS", "RES", "DC", "SCL", "SDA"],
+  "display": {
+    "width": 128,
+    "height": 64
+  }
+}