start of the epd. Problem right now 0xff display black. Will have to investigate

Client/AgentDoc/epd_reference_driver.md

@@ -0,0 +1,62 @@
+# EPD Reference Driver — GDEY075T7 (UC8179)
+
+## Source
+
+**Repository:** [ekosboard/firmware](https://github.com/ekosboard/firmware)  
+**File:** [`src/components/EPD/driver/epd_GDEY075T7.c`](https://github.com/ekosboard/firmware/blob/main/src/components/EPD/driver/epd_GDEY075T7.c)
+
+## Panel Info
+
+- **Controller:** UC8179
+- **Panel:** GDEY075T7 (Good Display 7.5" B/W, 800×480)
+- **Platform:** ESP-IDF (native SPI)
+- **Grayscale:** 4-level support present but marked as "NOT TESTED"
+
+## Key Implementation Details
+
+### BUSY Pin Polarity
+- **Reference driver:** HIGH = Busy, LOW = Idle
+- **⚠️ Our board is INVERTED:** LOW = Busy, HIGH = Idle
+- Wait loop polls `gpio_get_level(BUSY) == 0` to detect idle (reference)
+- Our code uses `== 0` to wait while busy (opposite meaning, same code pattern)
+
+### Clear Screen (White)
+- Writes `0xFF` to **both** old (0x10) and new (0x13) data layers
+- `0xFF` = White, `0x00` = Black
+
+### Display Image
+- Writes `0x00` to old data layer (0x10) — assumes previous state was black
+- Writes actual image data to new data layer (0x13)
+
+### Sleep Sequence
+1. `0x50` with `0xF7` — VCOM and data interval setting before sleep
+2. `0x02` — Power Off
+3. Wait for BUSY idle
+4. `0x07` + `0xA5` — Deep Sleep
+
+### Init Sequence (Full Refresh)
+1. Hardware reset (RST low 10ms, high 10ms)
+2. `0x01` — Power Setting: VGH=20V, VGL=-20V, VDH=15V, VDL=-15V, VDHR=4.2V
+3. `0x06` — Booster Soft Start: 0x17, 0x17, 0x28, 0x17
+4. `0x04` — Power On + 100ms delay + wait busy
+5. `0x00` — Panel Setting: `0x1F` (KW B/W mode)
+6. `0x61` — Resolution: 800×480
+7. `0x15` — DUSPI disabled
+8. `0x50` — VCOM: 0x10, 0x07
+9. `0x60` — TCON: 0x22
+10. `0xE3` — PWS: 0x22
+
+### Fast Refresh
+- `0xE0` → `0x02` (enable fast mode)
+- `0xE5` → `0x5A` (fast refresh timing)
+
+### Partial Update
+- Uses `0x91` (partial in) / `0x92` (partial out) + `0x90` (resolution setting)
+- Writes `~data` (inverted) to old layer to force transitions
+- Sets `0x50` → `0x21` (N2OCP disabled) for partial mode
+
+### 4-Level Grayscale
+- Requires different booster settings: `0x27, 0x27, 0x18, 0x17`
+- `0xE5` → `0x5F` for grayscale timing
+- Data encoding: 2 bits per pixel (0xC0=white, 0x00=black, 0x80=gray1, 0x40=gray2)
+- Old layer and new layer encode different bit planes, both inverted (`~temp3`)

Client/dependencies.lock

@@ -1,4 +1,12 @@
 dependencies:
+  epd:
+    dependencies:
+    - name: idf
+      version: '>=5.0.0'
+    source:
+      path: C:\Dev\Classified\Calendink\components\epd
+      type: local
+    version: 1.0.0
   espressif/ethernet_init:
     component_hash: 9f7d29acf5fe32315579ddb6247388291cda555aa529409108c0ada0aa7cd99d
     dependencies:
@@ -164,11 +172,12 @@ dependencies:
       type: local
     version: 1.0.0
 direct_dependencies:
+- epd
 - espressif/mdns
 - http_client
 - idf
 - led
 - network
-manifest_hash: 097f2b35eb7bfe4a05687f2391f9fd078cab6437b8459fd420c47d1fa7a3c3d4
+manifest_hash: 534458d93ffd9c5d8b40be759ddfb47940a38560cb0565b9d0ba18f8ec7510b7
 target: esp32c6
 version: 2.0.0

Client/main/CMakeLists.txt

@@ -2,4 +2,5 @@ idf_component_register(SRCS "main.cpp" "provider.cpp"
                     PRIV_REQUIRES driver nvs_flash
                     esp_event esp_timer
                     led network http_client mdns
+                    epd
                     INCLUDE_DIRS ".")

Client/main/idf_component.yml

@@ -9,3 +9,5 @@ dependencies:
     path: "../../components/led"
   http_client:
     path: "../../components/http_client"
+  epd:
+    path: "../../components/epd"

Client/main/main.cpp

@@ -1,3 +1,4 @@
+#include <cassert>
 #include <cstdio>
 
 #include "esp_event.h"
@@ -9,6 +10,7 @@
 #include "nvs_flash.h"
 #include "sdkconfig.h"
 
+#include "epd.hpp"
 #include "led.hpp"
 #include "network.hpp"
 #include "provider.hpp"
@@ -33,45 +35,54 @@ extern "C" void app_main()
   setup_led();
 
   // Connect to WiFi
-  ESP_LOGI(TAG, "Initializing WiFi connection");
-  initialize_network();
-
-  esp_err_t err = connect_wifi(CONFIG_CALENDINK_WIFI_SSID,
-                               CONFIG_CALENDINK_WIFI_PASSWORD, false);
-
-  if (err == ESP_OK)
+  if (false)
   {
-    uint8_t retries = 1;
-    do
+    ESP_LOGI(TAG, "Initializing WiFi connection");
+    initialize_network();
+
+    esp_err_t err = connect_wifi(CONFIG_CALENDINK_WIFI_SSID,
+                                 CONFIG_CALENDINK_WIFI_PASSWORD, false);
+
+    if (err == ESP_OK)
     {
-      err = check_wifi_connection(retries);
-      if (err != ESP_OK)
+      uint8_t retries = 1;
+      do
       {
-        ESP_LOGW(TAG, "WiFi connection check timeout, retrying... (%d)",
-                 retries);
-        led_blink_number(3, 255, 0, 0);
-      }
-      retries++;
-    } while (err == ESP_ERR_TIMEOUT &&
-             retries <= CONFIG_CALENDINK_WIFI_RETRIES);
-  }
+        err = check_wifi_connection(retries);
+        if (err != ESP_OK)
+        {
+          ESP_LOGW(TAG, "WiFi connection check timeout, retrying... (%d)",
+                   retries);
+          led_blink_number(3, 255, 0, 0);
+        }
+        retries++;
+      } while (err == ESP_ERR_TIMEOUT &&
+               retries <= CONFIG_CALENDINK_WIFI_RETRIES);
+    }
 
-  if (err == ESP_OK)
-  {
-    ESP_LOGI(TAG, "Successfully connected to WiFi!");
-    test_provider_communication();
-  }
-  else
-  {
-    ESP_LOGE(TAG, "Failed to connect to WiFi.");
+    if (err == ESP_OK)
+    {
+      ESP_LOGI(TAG, "Successfully connected to WiFi!");
+      test_provider_communication();
+    }
+    else
+    {
+      ESP_LOGE(TAG, "Failed to connect to WiFi.");
+    }
   }
 
   turn_off_led();
 
-  while (true)
-  {
-    vTaskDelay(pdMS_TO_TICKS(1000));
-  }
+  ESP_LOGI(TAG, "Initializing EPD");
+  epd_init();
+  epd_init_display();
+  epd_clear(epd_color_t::WHITE);
+  epd_refresh();
+  epd_shutdown_display();
 
-  shutdown_network();
+  if (false)
+  {
+    disconnect_wifi();
+    shutdown_network();
+  }
 }