249 lines
6.2 KiB
C
249 lines
6.2 KiB
C
/**
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* @file ili9341.c
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*
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*/
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/*********************
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* INCLUDES
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*********************/
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#include "ili9341.h"
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#include "disp_spi.h"
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#include "driver/gpio.h"
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#include "esp_log.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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/*********************
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* DEFINES
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*********************/
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#define TAG "ILI9341"
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/**********************
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* TYPEDEFS
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**********************/
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/*The LCD needs a bunch of command/argument values to be initialized. They are stored in this struct. */
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typedef struct {
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uint8_t cmd;
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uint8_t data[16];
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uint8_t databytes; //No of data in data; bit 7 = delay after set; 0xFF = end of cmds.
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} lcd_init_cmd_t;
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/**********************
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* STATIC PROTOTYPES
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**********************/
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static void ili9341_set_orientation(uint8_t orientation);
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static void ili9341_send_cmd(uint8_t cmd);
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static void ili9341_send_data(void * data, uint16_t length);
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static void ili9341_send_color(void * data, uint16_t length);
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/**********************
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* STATIC VARIABLES
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**********************/
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/**********************
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* MACROS
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**********************/
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/**********************
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* GLOBAL FUNCTIONS
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**********************/
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void ili9341_init(void)
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{
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lcd_init_cmd_t ili_init_cmds[]={
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{0xCF, {0x00, 0x83, 0X30}, 3},
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{0xED, {0x64, 0x03, 0X12, 0X81}, 4},
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{0xE8, {0x85, 0x01, 0x79}, 3},
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{0xCB, {0x39, 0x2C, 0x00, 0x34, 0x02}, 5},
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{0xF7, {0x20}, 1},
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{0xEA, {0x00, 0x00}, 2},
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{0xC0, {0x26}, 1}, /*Power control*/
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{0xC1, {0x11}, 1}, /*Power control */
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{0xC5, {0x35, 0x3E}, 2}, /*VCOM control*/
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{0xC7, {0xBE}, 1}, /*VCOM control*/
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{0x36, {0x28}, 1}, /*Memory Access Control*/
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{0x3A, {0x55}, 1}, /*Pixel Format Set*/
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{0xB1, {0x00, 0x1B}, 2},
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{0xF2, {0x08}, 1},
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{0x26, {0x01}, 1},
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{0xE0, {0x1F, 0x1A, 0x18, 0x0A, 0x0F, 0x06, 0x45, 0X87, 0x32, 0x0A, 0x07, 0x02, 0x07, 0x05, 0x00}, 15},
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{0XE1, {0x00, 0x25, 0x27, 0x05, 0x10, 0x09, 0x3A, 0x78, 0x4D, 0x05, 0x18, 0x0D, 0x38, 0x3A, 0x1F}, 15},
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{0x2A, {0x00, 0x00, 0x00, 0xEF}, 4},
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{0x2B, {0x00, 0x00, 0x01, 0x3f}, 4},
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{0x2C, {0}, 0},
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{0xB7, {0x07}, 1},
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{0xB6, {0x0A, 0x82, 0x27, 0x00}, 4},
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{0x11, {0}, 0x80},
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{0x29, {0}, 0x80},
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{0, {0}, 0xff},
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};
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#if ILI9341_BCKL == 15
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gpio_config_t io_conf;
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io_conf.intr_type = GPIO_PIN_INTR_DISABLE;
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io_conf.mode = GPIO_MODE_OUTPUT;
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io_conf.pin_bit_mask = GPIO_SEL_15;
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io_conf.pull_down_en = GPIO_PULLDOWN_DISABLE;
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io_conf.pull_up_en = GPIO_PULLUP_DISABLE;
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gpio_config(&io_conf);
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#endif
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//Initialize non-SPI GPIOs
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gpio_pad_select_gpio(ILI9341_DC);
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gpio_set_direction(ILI9341_DC, GPIO_MODE_OUTPUT);
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#if ILI9341_USE_RST
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gpio_pad_select_gpio(ILI9341_RST);
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gpio_set_direction(ILI9341_RST, GPIO_MODE_OUTPUT);
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#endif
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#if ILI9341_ENABLE_BACKLIGHT_CONTROL
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gpio_pad_select_gpio(ILI9341_BCKL);
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gpio_set_direction(ILI9341_BCKL, GPIO_MODE_OUTPUT);
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#endif
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#if ILI9341_USE_RST
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//Reset the display
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gpio_set_level(ILI9341_RST, 0);
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vTaskDelay(100 / portTICK_RATE_MS);
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gpio_set_level(ILI9341_RST, 1);
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vTaskDelay(100 / portTICK_RATE_MS);
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#endif
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ESP_LOGI(TAG, "Initialization.");
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//Send all the commands
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uint16_t cmd = 0;
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while (ili_init_cmds[cmd].databytes!=0xff) {
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ili9341_send_cmd(ili_init_cmds[cmd].cmd);
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ili9341_send_data(ili_init_cmds[cmd].data, ili_init_cmds[cmd].databytes&0x1F);
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if (ili_init_cmds[cmd].databytes & 0x80) {
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vTaskDelay(100 / portTICK_RATE_MS);
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}
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cmd++;
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}
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ili9341_enable_backlight(true);
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ili9341_set_orientation(CONFIG_LV_DISPLAY_ORIENTATION);
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#if ILI9341_INVERT_COLORS == 1
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ili9341_send_cmd(0x21);
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#else
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ili9341_send_cmd(0x20);
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#endif
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}
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void ili9341_flush(lv_disp_drv_t * drv, const lv_area_t * area, lv_color_t * color_map)
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{
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uint8_t data[4];
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/*Column addresses*/
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ili9341_send_cmd(0x2A);
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data[0] = (area->x1 >> 8) & 0xFF;
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data[1] = area->x1 & 0xFF;
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data[2] = (area->x2 >> 8) & 0xFF;
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data[3] = area->x2 & 0xFF;
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ili9341_send_data(data, 4);
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/*Page addresses*/
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ili9341_send_cmd(0x2B);
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data[0] = (area->y1 >> 8) & 0xFF;
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data[1] = area->y1 & 0xFF;
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data[2] = (area->y2 >> 8) & 0xFF;
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data[3] = area->y2 & 0xFF;
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ili9341_send_data(data, 4);
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/*Memory write*/
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ili9341_send_cmd(0x2C);
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uint32_t size = lv_area_get_width(area) * lv_area_get_height(area);
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ili9341_send_color((void*)color_map, size * 2);
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}
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void ili9341_enable_backlight(bool backlight)
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{
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#if ILI9341_ENABLE_BACKLIGHT_CONTROL
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ESP_LOGI(TAG, "%s backlight.", backlight ? "Enabling" : "Disabling");
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uint32_t tmp = 0;
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#if (ILI9341_BCKL_ACTIVE_LVL==1)
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tmp = backlight ? 1 : 0;
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#else
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tmp = backlight ? 0 : 1;
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#endif
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gpio_set_level(ILI9341_BCKL, tmp);
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#endif
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}
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void ili9341_sleep_in()
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{
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uint8_t data[] = {0x08};
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ili9341_send_cmd(0x10);
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ili9341_send_data(&data, 1);
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}
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void ili9341_sleep_out()
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{
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uint8_t data[] = {0x08};
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ili9341_send_cmd(0x11);
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ili9341_send_data(&data, 1);
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}
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/**********************
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* STATIC FUNCTIONS
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**********************/
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static void ili9341_send_cmd(uint8_t cmd)
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{
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disp_wait_for_pending_transactions();
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gpio_set_level(ILI9341_DC, 0); /*Command mode*/
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disp_spi_send_data(&cmd, 1);
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}
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static void ili9341_send_data(void * data, uint16_t length)
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{
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disp_wait_for_pending_transactions();
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gpio_set_level(ILI9341_DC, 1); /*Data mode*/
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disp_spi_send_data(data, length);
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}
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static void ili9341_send_color(void * data, uint16_t length)
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{
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disp_wait_for_pending_transactions();
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gpio_set_level(ILI9341_DC, 1); /*Data mode*/
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disp_spi_send_colors(data, length);
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}
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static void ili9341_set_orientation(uint8_t orientation)
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{
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// ESP_ASSERT(orientation < 4);
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const char *orientation_str[] = {
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"PORTRAIT", "PORTRAIT_INVERTED", "LANDSCAPE", "LANDSCAPE_INVERTED"
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};
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ESP_LOGI(TAG, "Display orientation: %s", orientation_str[orientation]);
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#if defined CONFIG_LV_PREDEFINED_DISPLAY_M5STACK
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uint8_t data[] = {0x68, 0x68, 0x08, 0x08};
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#elif defined (CONFIG_LV_PREDEFINED_DISPLAY_M5CORE2)
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uint8_t data[] = {0x08, 0x88, 0x28, 0xE8};
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#elif defined (CONFIG_LV_PREDEFINED_DISPLAY_WROVER4)
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uint8_t data[] = {0x6C, 0xEC, 0xCC, 0x4C};
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#elif defined (CONFIG_LV_PREDEFINED_DISPLAY_NONE)
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uint8_t data[] = {0x48, 0x88, 0x28, 0xE8};
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#endif
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ESP_LOGI(TAG, "0x36 command value: 0x%02X", data[orientation]);
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ili9341_send_cmd(0x36);
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ili9341_send_data((void *) &data[orientation], 1);
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}
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