fix(lcd-backlight): Update to ESP IDF v5

CMakeLists.txt

@@ -44,6 +44,8 @@ elseif(CONFIG_LV_TFT_DISPLAY_CONTROLLER_ILI9163C)
     list(APPEND SOURCES "lvgl_tft/ili9163c.c")
 elseif(CONFIG_LV_TFT_DISPLAY_CONTROLLER_PCD8544)
     list(APPEND SOURCES "lvgl_tft/pcd8544.c")
+elseif(CONFIG_LV_TFT_DISPLAY_CONTROLLER_SCHMITT)
+    list(APPEND SOURCES "lvgl_tft/schmitt.c")
 else()
     message(WARNING "LVGL ESP32 drivers: Display controller not defined.")
 endif()
@@ -86,7 +88,7 @@ endif()
 
 idf_component_register(SRCS ${SOURCES}
                        INCLUDE_DIRS ${LVGL_INCLUDE_DIRS}
-                       REQUIRES lvgl)
+                       REQUIRES lvgl driver esp_common log freertos esp_rom soc)
 
 target_compile_definitions(${COMPONENT_LIB} PUBLIC "-DLV_LVGL_H_INCLUDE_SIMPLE")
 

lvgl_helpers.c

@@ -154,7 +154,7 @@ bool lvgl_spi_driver_init(int host,
     int dma_channel,
     int quadwp_pin, int quadhd_pin)
 {
-    assert((0 <= host) && (SPI_HOST_MAX > host));
+    assert((0 <= host) && (3 > host));
     const char *spi_names[] = {
         "SPI1_HOST", "SPI2_HOST", "SPI3_HOST"
     };

lvgl_helpers.h

@@ -78,6 +78,8 @@ extern "C" {
 #define DISP_BUF_SIZE (LV_HOR_RES_MAX * 40)
 #elif defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_PCD8544)
 #define DISP_BUF_SIZE  (LV_HOR_RES_MAX * (LV_VER_RES_MAX / 8))
+#elif defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_SCHMITT)
+#define DISP_BUF_SIZE  (LV_HOR_RES_MAX * LV_VER_RES_MAX)
 #else
 #error "No display controller selected"
 #endif

lvgl_spi_conf.h

@@ -114,7 +114,11 @@ extern "C" {
 /**********************
  *      TYPEDEFS
  **********************/
-#if defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_ILI9481) || \
+#if defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_SCHMITT)
+
+#define SPI_BUS_MAX_TRANSFER_SZ (DISP_BUF_SIZE * 4)
+
+#elif defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_ILI9481) || \
     defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_ILI9488)
 
 #define SPI_BUS_MAX_TRANSFER_SZ (DISP_BUF_SIZE * 3)
@@ -161,7 +165,7 @@ extern "C" {
 #elif defined (CONFIG_LV_TFT_DISPLAY_CONTROLLER_PCD8544)
 #define SPI_TFT_CLOCK_SPEED_HZ  (4*1000*1000)
 #else
-#define SPI_TFT_CLOCK_SPEED_HZ  (40*1000*1000)
+#define SPI_TFT_CLOCK_SPEED_HZ  (5*1000*1000) // Set to 40 later
 #endif
 
 #endif

lvgl_tft/Kconfig

@@ -178,6 +178,10 @@ menu "LVGL TFT Display controller"
         bool
         help
             PCD8544 display controller (Nokia 3110/5110)
+    config LV_TFT_DISPLAY_CONTROLLER_SCHMITT
+        bool
+        help
+            Schmitt's display controller
     # Display controller communication protocol
     #
     # This symbols define the communication protocol used by the
@@ -349,6 +353,10 @@ menu "LVGL TFT Display controller"
             select LV_TFT_DISPLAY_CONTROLLER_PCD8544
             select LV_TFT_DISPLAY_PROTOCOL_SPI
             select LV_TFT_DISPLAY_MONOCHROME
+        config LV_TFT_DISPLAY_USER_CONTROLLER_SCHMITT
+            bool "SCHMITT"
+            select LV_TFT_DISPLAY_CONTROLLER_SCHMITT
+            select LV_TFT_DISPLAY_PROTOCOL_SPI
     endchoice
 
     config CUSTOM_DISPLAY_BUFFER_SIZE

lvgl_tft/disp_driver.c

@@ -45,6 +45,8 @@ void *disp_driver_init(void)
     ili9163c_init();
 #elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_PCD8544
     pcd8544_init();
+#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_SCHMITT
+    schmitt_init();
 #endif
 
     // We still use menuconfig for these settings
@@ -111,6 +113,8 @@ void disp_driver_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t *
     ili9163c_flush(drv, area, color_map);
 #elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_PCD8544
     pcd8544_flush(drv, area, color_map);
+#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_SCHMITT
+    schmitt_flush(drv, area, color_map);
 #endif
 }
 

lvgl_tft/disp_driver.h

@@ -54,6 +54,8 @@ extern "C" {
 #include "ili9163c.h"
 #elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_PCD8544
 #include "pcd8544.h"
+#elif defined CONFIG_LV_TFT_DISPLAY_CONTROLLER_SCHMITT
+#include "schmitt.h"
 #endif
 
 /*********************

lvgl_tft/esp_lcd_backlight.c

@@ -8,10 +8,12 @@
  *********************/
 #include "esp_lcd_backlight.h"
 #include "driver/ledc.h"
-#include "driver/gpio.h"
+#include "rom/gpio.h"
 #include "esp_log.h"
 #include "soc/ledc_periph.h" // to invert LEDC output on IDF version < v4.3
 
+#define SIG_GPIO_OUT_IDX 128
+
 typedef struct {
     bool pwm_control; // true: LEDC is used, false: GPIO is used
     int index;        // Either GPIO or LEDC channel
@@ -49,7 +51,7 @@ disp_backlight_h disp_backlight_new(const disp_backlight_config_t *config)
         };
         const ledc_timer_config_t LCD_backlight_timer = {
             .speed_mode = LEDC_LOW_SPEED_MODE,
-            .bit_num = LEDC_TIMER_10_BIT,
+            .duty_resolution = LEDC_TIMER_10_BIT,
             .timer_num = config->timer_idx,
             .freq_hz = 5000,
             .clk_cfg = LEDC_AUTO_CLK};

lvgl_tft/schmitt.c

@@ -0,0 +1,27 @@
+#include <stdio.h>
+
+#include "schmitt.h"
+#include "disp_spi.h"
+
+#include "esp_log.h"
+
+static const char* TAG = "SCHMITT_DIS";
+
+void schmitt_init(void)
+{
+	disp_spi_acquire();
+	// Do things
+	ESP_LOGI(TAG, "schmitt_init() called");
+	disp_spi_release();
+}
+
+void schmitt_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * color_map)
+{
+	disp_spi_acquire();
+	// Do things
+	uint32_t size = lv_area_get_width(area) * lv_area_get_height(area);
+	disp_spi_send_colors(color_map, size * 4);
+	ESP_LOGI(TAG, "schmitt_flush() called");
+	disp_spi_release();
+	lv_disp_flush_ready(drv);
+}

lvgl_tft/schmitt.h

@@ -0,0 +1,20 @@
+#ifndef SCHMITT_H_
+#define SCHMITT_H_
+
+#include <stdint.h>
+
+#ifdef LV_LVGL_H_INCLUDE_SIMPLE
+#include "lvgl.h"
+#else
+#include "lvgl/lvgl.h"
+#endif
+#include "../lvgl_helpers.h"
+
+#define LV_HOR_RES_MAX 64
+#define LV_VER_RES_MAX 64
+
+void schmitt_init(void);
+
+void schmitt_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * color_map);
+
+#endif /* SCHMITT_H_ */