draft support for M5PaperS3

CMakeLists.txt

@@ -22,6 +22,7 @@ set(app_sources "src/epdiy.c"
                 "src/board/epd_board.c"
                 "src/board/epd_board_common.c"
                 "src/board/epd_board_lilygo_t5_47.c"
+                "src/board/epd_board_m5papers3.c"
                 "src/board/epd_board_v2_v3.c"
                 "src/board/epd_board_v4.c"
                 "src/board/epd_board_v5.c"

src/board/epd_board_m5papers3.c

@@ -0,0 +1,154 @@
+#include <stdint.h>
+#include "epd_board.h"
+#include "epdiy.h"
+
+#include "../output_common/render_method.h"
+#include "../output_lcd/lcd_driver.h"
+#include "esp_log.h"
+
+#include <driver/gpio.h>
+#include <driver/i2c.h>
+#include <sdkconfig.h>
+
+// Make this compile von the ESP32 without ifdefing the whole file
+#ifndef CONFIG_IDF_TARGET_ESP32S3
+#define GPIO_NUM_40 -1
+#define GPIO_NUM_41 -1
+#define GPIO_NUM_42 -1
+#define GPIO_NUM_43 -1
+#define GPIO_NUM_44 -1
+#define GPIO_NUM_45 -1
+#define GPIO_NUM_46 -1
+#define GPIO_NUM_47 -1
+#define GPIO_NUM_48 -1
+#endif
+
+#define EPD_SPV GPIO_NUM_17
+#define EPD_EN  GPIO_NUM_45
+#define BST_EN  GPIO_NUM_46
+#define EPD_XLE GPIO_NUM_15
+
+/* Control Lines */
+#define CKV GPIO_NUM_18
+#define STH GPIO_NUM_13
+
+/* Edges */
+#define CKH GPIO_NUM_16
+
+/* Data Lines */
+#define D7 GPIO_NUM_10
+#define D6 GPIO_NUM_8
+#define D5 GPIO_NUM_11
+#define D4 GPIO_NUM_9
+#define D3 GPIO_NUM_12
+#define D2 GPIO_NUM_7
+#define D1 GPIO_NUM_14
+#define D0 GPIO_NUM_6
+
+static lcd_bus_config_t lcd_config = {
+    .clock = CKH,
+    .ckv = CKV,
+    .leh = EPD_XLE,
+    .start_pulse = STH,
+    .stv = EPD_SPV,
+    .data[0] = D0,
+    .data[1] = D1,
+    .data[2] = D2,
+    .data[3] = D3,
+    .data[4] = D4,
+    .data[5] = D5,
+    .data[6] = D6,
+    .data[7] = D7,
+};
+
+static void epd_board_init(uint32_t epd_row_width) {
+    gpio_hold_dis(CKH);  // free CKH after wakeup
+
+    gpio_set_direction(EPD_SPV, GPIO_MODE_OUTPUT);
+    gpio_set_direction(EPD_EN, GPIO_MODE_OUTPUT);
+    gpio_set_direction(BST_EN, GPIO_MODE_OUTPUT);
+    gpio_set_direction(EPD_XLE, GPIO_MODE_OUTPUT);
+
+    gpio_set_level(EPD_XLE, 0);
+    gpio_set_level(EPD_SPV, 1);
+    gpio_set_level(EPD_EN, 0);
+    gpio_set_level(BST_EN, 0);
+
+    const EpdDisplay_t* display = epd_get_display();
+
+    LcdEpdConfig_t config = {
+        .pixel_clock = display->bus_speed * 1000 * 1000,
+        .ckv_high_time = 60,
+        .line_front_porch = 4,
+        .le_high_time = 4,
+        .bus_width = display->bus_width,
+        .bus = lcd_config,
+    };
+    epd_lcd_init(&config, display->width, display->height);
+}
+
+static void epd_board_deinit() {
+    epd_lcd_deinit();
+
+    gpio_set_level(EPD_XLE, 0);
+    gpio_set_level(EPD_SPV, 0);
+    gpio_set_level(EPD_EN, 0);
+    gpio_set_level(BST_EN, 0);
+}
+
+static void epd_board_set_ctrl(epd_ctrl_state_t* state, const epd_ctrl_state_t* const mask) {
+  if (state->ep_sth) {
+    gpio_set_level(STH, 1);
+  } else {
+    gpio_set_level(STH, 0);
+  }
+
+  if (state->ep_stv) {
+    gpio_set_level(EPD_SPV, 1);
+  } else {
+    gpio_set_level(EPD_SPV, 0);
+  }
+
+  if (state->ep_latch_enable) {
+    gpio_set_level(EPD_XLE, 1);
+  } else {
+    gpio_set_level(EPD_XLE, 0);
+  }
+}
+
+static void epd_board_poweron(epd_ctrl_state_t* state) {
+    gpio_set_level(EPD_EN, 1);
+    vTaskDelay(1 / portTICK_PERIOD_MS);
+    gpio_set_level(BST_EN, 1);
+    vTaskDelay(1 / portTICK_PERIOD_MS);
+    gpio_set_level(EPD_SPV, 1);
+    gpio_set_level(EPD_SPV, 1);
+}
+
+static void epd_board_poweroff(epd_ctrl_state_t* state) {
+  // gpio_set_level(BST_EN,0);
+  // vTaskDelay(1 / portTICK_PERIOD_MS);
+  // gpio_set_level(EPD_EN,0);
+  // vTaskDelay(1 / portTICK_PERIOD_MS);
+  gpio_set_level(EPD_SPV,0);
+}
+
+static float epd_board_ambient_temperature() {
+    return 20;
+}
+
+const EpdBoardDefinition epd_board_m5papers3 = {
+    .init = epd_board_init,
+    .deinit = epd_board_deinit,
+    .set_ctrl = epd_board_set_ctrl,
+    .poweron = epd_board_poweron,
+    .poweroff = epd_board_poweroff,
+
+    .get_temperature = epd_board_ambient_temperature,
+    .set_vcom = NULL,
+
+    // unimplemented for now, but shares v6 implementation
+    .gpio_set_direction = NULL,
+    .gpio_read = NULL,
+    .gpio_write = NULL,
+};

src/epd_board.h

@@ -113,6 +113,7 @@ void epd_control_reg_deinit();
 // Built in board definitions
 extern const EpdBoardDefinition epd_board_lilygo_t5_47;
 extern const EpdBoardDefinition epd_board_lilygo_t5_47_touch;
+extern const EpdBoardDefinition epd_board_m5papers3;
 extern const EpdBoardDefinition epd_board_v2_v3;
 extern const EpdBoardDefinition epd_board_v4;
 extern const EpdBoardDefinition epd_board_v5;