cst816 touch driver

CMakeLists.txt

@@ -73,6 +73,8 @@ if(CONFIG_LV_TOUCH_CONTROLLER)
         list(APPEND SOURCES "lvgl_touch/ra8875_touch.c")
     elseif(CONFIG_LV_TOUCH_CONTROLLER_GT911)
         list(APPEND SOURCES "lvgl_touch/gt911.c")
+    elseif(CONFIG_LV_TOUCH_CONTROLLER_CST816)
+        list(APPEND SOURCES "lvgl_touch/CST816.c")
     endif()
 
     if(CONFIG_LV_TOUCH_DRIVER_PROTOCOL_SPI)

lvgl_helpers.c

@@ -175,7 +175,7 @@ bool lvgl_spi_driver_init(int host,
     };
 
     ESP_LOGI(TAG, "Initializing SPI bus...");
-    #if defined (CONFIG_IDF_TARGET_ESP32C3)
+    #if defined (CONFIG_IDF_TARGET_ESP32C3) || defined (CONFIG_IDF_TARGET_ESP32S3)
     dma_channel = SPI_DMA_CH_AUTO;
     #endif
     esp_err_t ret = spi_bus_initialize(host, &buscfg, (spi_dma_chan_t)dma_channel);

lvgl_helpers.h

@@ -34,6 +34,12 @@ extern "C" {
  * color format being used, for RGB565 each pixel needs 2 bytes.
  * When using the mono theme, the display pixels can be represented in one bit,
  * so the buffer size can be divided by 8, e.g. see SSD1306 display size. */
+
+//[BJ] Source: https://github.com/lvgl/lvgl_esp32_drivers/issues/202
+# define LV_HOR_RES_MAX 320
+# define LV_VER_RES_MAX 240
+# define SPI_HOST_MAX   3
+
 #if defined (CONFIG_CUSTOM_DISPLAY_BUFFER_SIZE)
 #define DISP_BUF_SIZE   CONFIG_CUSTOM_DISPLAY_BUFFER_BYTES
 #else

lvgl_tft/Kconfig

@@ -739,6 +739,20 @@ menu "LVGL TFT Display controller"
             help
                 Use software reset and ignores configured reset pin (some hardware does not use a reset pin).
 
+        config LV_DISPLAY_USE_TE_PIN
+            bool "Enable TE (Tearing effect) pin"
+            default y
+            help
+                Enable the TE pin to control the display. You can disable
+                it when the display does not need MISO signal to be controlled.
+
+        config LV_DISPLAY_TE_PIN
+            int "GPIO for TE (Tearing effect) pin"
+            depends on LV_DISPLAY_USE_TE_PIN
+            default 38
+            help
+                Configure the display TE pin here.
+
     endmenu
 
     # menu will be visible only when LV_PREDEFINED_DISPLAY_NONE is y

lvgl_tft/ili9341.c

@@ -53,28 +53,28 @@ static void ili9341_send_color(void * data, uint16_t length);
 void ili9341_init(void)
 {
 	lcd_init_cmd_t ili_init_cmds[]={
-		{0xCF, {0x00, 0x83, 0X30}, 3},
-		{0xED, {0x64, 0x03, 0X12, 0X81}, 4},
-		{0xE8, {0x85, 0x01, 0x79}, 3},
-		{0xCB, {0x39, 0x2C, 0x00, 0x34, 0x02}, 5},
-		{0xF7, {0x20}, 1},
-		{0xEA, {0x00, 0x00}, 2},
+		// {0xCF, {0x00, 0x83, 0X30}, 3},
+		// {0xED, {0x64, 0x03, 0X12, 0X81}, 4},
+		// {0xE8, {0x85, 0x01, 0x79}, 3},
+		// {0xCB, {0x39, 0x2C, 0x00, 0x34, 0x02}, 5},
+		// {0xF7, {0x20}, 1},
+		// {0xEA, {0x00, 0x00}, 2},
 		{0xC0, {0x26}, 1},          /*Power control*/
 		{0xC1, {0x11}, 1},          /*Power control */
 		{0xC5, {0x35, 0x3E}, 2},    /*VCOM control*/
 		{0xC7, {0xBE}, 1},          /*VCOM control*/
-		{0x36, {0x28}, 1},          /*Memory Access Control*/
+		{0x36, {0x08}, 1},          //{0x36, {0x28}, 1},          /*Memory Access Control*/
 		{0x3A, {0x55}, 1},			/*Pixel Format Set*/
-		{0xB1, {0x00, 0x1B}, 2},
-		{0xF2, {0x08}, 1},
-		{0x26, {0x01}, 1},
-		{0xE0, {0x1F, 0x1A, 0x18, 0x0A, 0x0F, 0x06, 0x45, 0X87, 0x32, 0x0A, 0x07, 0x02, 0x07, 0x05, 0x00}, 15},
-		{0XE1, {0x00, 0x25, 0x27, 0x05, 0x10, 0x09, 0x3A, 0x78, 0x4D, 0x05, 0x18, 0x0D, 0x38, 0x3A, 0x1F}, 15},
-		{0x2A, {0x00, 0x00, 0x00, 0xEF}, 4},
-		{0x2B, {0x00, 0x00, 0x01, 0x3f}, 4},
-		{0x2C, {0}, 0},
-		{0xB7, {0x07}, 1},
-		{0xB6, {0x0A, 0x82, 0x27, 0x00}, 4},
+		{0xB1, {0x00, 0x18}, 2},//{0xB1, {0x00, 0x1B}, 2}, //[BJ] frame rate. 
+		//{0xF2, {0x08}, 1},
+		{0x26, {0x01}, 1}, //[BJ] Gamma set
+		{0xE0, {0x1F, 0x1A, 0x18, 0x0A, 0x0F, 0x06, 0x45, 0X87, 0x32, 0x0A, 0x07, 0x02, 0x07, 0x05, 0x00}, 15},//[BJ] + Gamma correction
+		{0XE1, {0x00, 0x25, 0x27, 0x05, 0x10, 0x09, 0x3A, 0x78, 0x4D, 0x05, 0x18, 0x0D, 0x38, 0x3A, 0x1F}, 15},//[BJ] - Gamma correction
+		{0x2A, {0x00, 0x00, 0x00, 0xEF}, 4}, //[BJ] column address set
+		{0x2B, {0x00, 0x00, 0x01, 0x3f}, 4},//[BJ] page address set
+		{0x2C, {0}, 0},//[BJ] memory write.
+		{0xB7, {0x07}, 1},//[BJ] Entry mode set
+		{0xB6, {0x0A, 0x82, 0x27, 0x00}, 4}, //[BJ] display function control
 		{0x11, {0}, 0x80},
 		{0x29, {0}, 0x80},
 		{0, {0}, 0xff},
@@ -108,7 +108,7 @@ void ili9341_init(void)
 		cmd++;
 	}
 
-    ili9341_set_orientation(CONFIG_LV_DISPLAY_ORIENTATION);
+    // ili9341_set_orientation(CONFIG_LV_DISPLAY_ORIENTATION);
 
 #if ILI9341_INVERT_COLORS == 1
 	ili9341_send_cmd(0x21);
@@ -187,25 +187,25 @@ static void ili9341_send_color(void * data, uint16_t length)
 static void ili9341_set_orientation(uint8_t orientation)
 {
     // ESP_ASSERT(orientation < 4);
-
-    const char *orientation_str[] = {
-        "PORTRAIT", "PORTRAIT_INVERTED", "LANDSCAPE", "LANDSCAPE_INVERTED"
-    };
-
-    ESP_LOGI(TAG, "Display orientation: %s", orientation_str[orientation]);
-
-#if defined CONFIG_LV_PREDEFINED_DISPLAY_M5STACK
-    uint8_t data[] = {0x68, 0x68, 0x08, 0x08};
-#elif defined (CONFIG_LV_PREDEFINED_DISPLAY_M5CORE2)
-	uint8_t data[] = {0x08, 0x88, 0x28, 0xE8};
-#elif defined (CONFIG_LV_PREDEFINED_DISPLAY_WROVER4)
-    uint8_t data[] = {0x6C, 0xEC, 0xCC, 0x4C};
-#elif defined (CONFIG_LV_PREDEFINED_DISPLAY_NONE)
-    uint8_t data[] = {0x48, 0x88, 0x28, 0xE8};
-#endif
-
-    ESP_LOGI(TAG, "0x36 command value: 0x%02X", data[orientation]);
-
-    ili9341_send_cmd(0x36);
-    ili9341_send_data((void *) &data[orientation], 1);
+// orientation = 2;
+//     const char *orientation_str[] = {
+//         "PORTRAIT", "PORTRAIT_INVERTED", "LANDSCAPE", "LANDSCAPE_INVERTED"
+//     };
+
+//     ESP_LOGI(TAG, "Display orientation: %s", orientation_str[orientation]);
+
+// #if defined CONFIG_LV_PREDEFINED_DISPLAY_M5STACK
+//     uint8_t data[] = {0x68, 0x68, 0x08, 0x08};
+// #elif defined (CONFIG_LV_PREDEFINED_DISPLAY_M5CORE2)
+// 	uint8_t data[] = {0x08, 0x88, 0x28, 0xE8};
+// #elif defined (CONFIG_LV_PREDEFINED_DISPLAY_WROVER4)
+//     uint8_t data[] = {0x6C, 0xEC, 0xCC, 0x4C};
+// #elif defined (CONFIG_LV_PREDEFINED_DISPLAY_NONE)
+//     uint8_t data[] = {0x48, 0x88, 0x28, 0xE8};
+// #endif
+
+//     ESP_LOGI(TAG, "0x36 command value: 0x%02X", data[orientation]);
+
+//     ili9341_send_cmd(0x36);
+//     ili9341_send_data((void *) &data[orientation], 1);
 }

lvgl_tft/st7789.c

@@ -82,6 +82,14 @@ void st7789_init(void)
         {0xB6, {0x0A, 0x82, 0x27, 0x00}, 4},
         {ST7789_SLPOUT, {0}, 0x80},
         {ST7789_DISPON, {0}, 0x80},
+    #ifdef CONFIG_LV_DISPLAY_USE_TE_PIN
+        {ST7789_TEON, {0}, 1}, //[BJ] turn on TE
+    #endif
+        //----------- 
+        //[BJ] Below I am trying to change refresh rate of the screen
+        //{ST7789_FRCTR2,{0x1F},1}, //[BJ] set the refresh rate
+        //{ST7789_FRCTRL1,{0x01, 0x0F, 0x0F},3}, //[BJ] divide the refresh by 2.
+        // ----------------------------------------
         {0, {0}, 0xff},
     };
 
@@ -94,6 +102,11 @@ void st7789_init(void)
     gpio_set_direction(ST7789_RST, GPIO_MODE_OUTPUT);
 #endif
 
+#ifdef CONFIG_LV_DISPLAY_USE_TE_PIN
+    gpio_pad_select_gpio(ST7789_TE);
+    gpio_set_direction(ST7789_TE, GPIO_MODE_INPUT);
+#endif
+
     //Reset the display
 #if !defined(ST7789_SOFT_RST)
     gpio_set_level(ST7789_RST, 0);
@@ -208,7 +221,7 @@ void st7789_send_data(void * data, uint16_t length)
 
 static void st7789_send_color(void * data, size_t length)
 {
-    disp_wait_for_pending_transactions();
+    // disp_wait_for_pending_transactions();
     gpio_set_level(ST7789_DC, 1);
     disp_spi_send_colors(data, length);
 }

lvgl_tft/st7789.h

@@ -23,6 +23,8 @@ extern "C"
 
 #define ST7789_DC       CONFIG_LV_DISP_PIN_DC
 #define ST7789_RST      CONFIG_LV_DISP_PIN_RST
+#define ST7789_TE       CONFIG_LV_DISPLAY_TE_PIN
+
 
 #if CONFIG_LV_DISP_USE_RST
   #if CONFIG_LV_DISP_ST7789_SOFT_RESET

lvgl_touch/CST816.c

@@ -0,0 +1,123 @@
+/*
+* Copyright © 2022 Band Industries Inc.
+
+* Permission is hereby granted, free of charge, to any person obtaining a copy of this 
+* software and associated documentation files (the “Software”), to deal in the Software 
+* without restriction, including without limitation the rights to use, copy, modify, merge, 
+* publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons 
+* to whom the Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all copies or 
+* substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 
+* PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE 
+* FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
+* SOFTWARE.
+*/
+
+#include <esp_log.h>
+#ifdef LV_LVGL_H_INCLUDE_SIMPLE
+#include <lvgl.h>
+#else
+#include <lvgl/lvgl.h>
+#endif
+#include "CST816.h"
+
+#include "lvgl_i2c/i2c_manager.h"
+
+#define TAG "CST816"
+
+uint8_t CST816_addr;
+
+static esp_err_t _cst816_i2c_read(uint8_t slave_addr, uint8_t register_addr, uint8_t *data_buf, uint8_t len) {
+    return lvgl_i2c_read(CONFIG_LV_I2C_TOUCH_PORT, slave_addr, register_addr, data_buf, len);
+}
+
+// static esp_err_t _cst816_i2c_write8(uint8_t slave_addr, uint8_t register_addr, uint8_t data) {
+//     return lvgl_i2c_write(CONFIG_LV_I2C_TOUCH_PORT, slave_addr, register_addr, &data, 1);
+// }
+
+/**
+  * @brief  Initialize for cst816 communication via I2C
+  * @param  dev_addr: Device address on communication Bus (I2C slave address of cst816).
+  * @retval None
+  */
+void cst816_init(uint8_t dev_addr) {
+    CST816_addr = dev_addr;
+    uint8_t version;
+    uint8_t versionInfo[3];
+    esp_err_t ret;
+    ESP_LOGI(TAG, "Initializing cst816 %d", dev_addr);
+    if ((ret = _cst816_i2c_read(dev_addr, 0x15, &version, 1) != ESP_OK))
+    {
+        ESP_LOGE(TAG, "Error reading version from device: %s",
+        esp_err_to_name(ret));    // Only show error the first time
+        return;
+    }
+    if ((ret = _cst816_i2c_read(dev_addr, 0xA7, versionInfo, 3) != ESP_OK))
+    {
+        ESP_LOGE(TAG, "Error reading versionInfo from device: %s",
+        esp_err_to_name(ret));    // Only show error the first time
+        return;
+    }
+    ESP_LOGI(TAG, "CST816 version %d, versionInfo: %d.%d.%d", version, versionInfo[0], versionInfo[1], versionInfo[2]);
+}
+
+/**
+  * @brief  Get the touch screen X and Y positions values. Ignores multi touch
+  * @param  drv:
+  * @param  data: Store data here
+  * @retval Always false
+  */
+
+bool cst816_read(lv_indev_drv_t *drv, lv_indev_data_t *data) {
+
+
+    uint8_t data_raw[8] ;
+    _cst816_i2c_read(CST816_addr, 0x01, data_raw, 6);
+    // printf("Touch data:  ");
+    // for(int i = 0; i < 6; i++)
+    // {
+    //     printf("0x%02X  ", data_raw[i]);
+    // }
+    // printf("\r\n");
+
+    uint8_t gestureID = data_raw[0];
+    uint8_t points = data_raw[1];
+    uint8_t event = data_raw[2] >> 6;
+    uint16_t point_x = 0;
+    uint16_t point_y = 0;
+    if(points == 0)
+    {
+        data->state = LV_INDEV_STATE_RELEASED;
+        return false;
+
+    }
+
+    data->state = LV_INDEV_STATE_PRESSED;
+    point_x = (data_raw[3] | ((data_raw[2] & 0x0F) << 8));
+    point_y = (data_raw[5] | ((data_raw[4] & 0x0F) << 8));
+
+#if CONFIG_LV_SWAPXY_CST816
+    int temp;
+    temp = point_y;
+    point_y = point_x;
+    point_x = temp;
+#endif
+
+#if CONFIG_LV_INVERT_X_CST816  
+    point_x = CONFIG_LV_TOUCH_X_MAX_CST816 - point_x;
+#endif
+
+#if CONFIG_LV_INVERT_Y_CST816
+    point_y = CONFIG_LV_TOUCH_Y_MAX_CST816 - point_y;
+#endif
+
+    data->point.x = point_x;
+    data->point.y = point_y;
+    ESP_LOGI(TAG, "gestureID %d, points %d, event %d X=%u Y=%u", gestureID, points, event, data->point.x, data->point.y);
+    return false;
+}

lvgl_touch/CST816.h

@@ -0,0 +1,56 @@
+#ifndef __CST816_H
+/*
+* Copyright © 2022 Band Industries Inc.
+
+* Permission is hereby granted, free of charge, to any person obtaining a copy of this 
+* software and associated documentation files (the “Software”), to deal in the Software 
+* without restriction, including without limitation the rights to use, copy, modify, merge, 
+* publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons 
+* to whom the Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all copies or 
+* substantial portions of the Software.
+* 
+* THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
+* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR 
+* PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE 
+* FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
+* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
+* SOFTWARE.
+*/
+
+#define __CST816_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#ifdef LV_LVGL_H_INCLUDE_SIMPLE
+#include "lvgl.h"
+#else
+#include "lvgl/lvgl.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define CST816_I2C_SLAVE_ADDR   0x15
+
+/**
+  * @brief  Initialize for cst816 communication via I2C
+  * @param  dev_addr: Device address on communication Bus (I2C slave address of CST816).
+  * @retval None
+  */
+void cst816_init(uint8_t dev_addr);
+
+/**
+  * @brief  Get the touch screen X and Y positions values. Ignores multi touch
+  * @param  drv:
+  * @param  data: Store data here
+  * @retval Always false
+  */
+bool cst816_read(lv_indev_drv_t *drv, lv_indev_data_t *data);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* __CST816_H */