185 lines
4.5 KiB
C
185 lines
4.5 KiB
C
/**
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* @file mpi3501.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 "ili9486.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 "ILI9486"
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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 ili9486_set_orientation(uint8_t orientation);
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static void ili9486_send_cmd(uint8_t cmd);
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static void ili9486_send_data(void * data, uint16_t length);
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static void ili9486_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 ili9486_init(void)
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{
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lcd_init_cmd_t ili_init_cmds[]={
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{0x11, {0}, 0x80},
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{0x3A, {0x55}, 1},
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{0x2C, {0x44}, 1},
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{0xC5, {0x00, 0x00, 0x00, 0x00}, 4},
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{0xE0, {0x0F, 0x1F, 0x1C, 0x0C, 0x0F, 0x08, 0x48, 0x98, 0x37, 0x0A, 0x13, 0x04, 0x11, 0x0D, 0x00}, 15},
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{0XE1, {0x0F, 0x32, 0x2E, 0x0B, 0x0D, 0x05, 0x47, 0x75, 0x37, 0x06, 0x10, 0x03, 0x24, 0x20, 0x00}, 15},
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{0x20, {0}, 0}, /* display inversion OFF */
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{0x36, {0x48}, 1},
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{0x29, {0}, 0x80}, /* display on */
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{0x00, {0}, 0xff},
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};
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//Initialize non-SPI GPIOs
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gpio_pad_select_gpio(ILI9486_DC);
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gpio_set_direction(ILI9486_DC, GPIO_MODE_OUTPUT);
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#if ILI9486_USE_RST
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gpio_pad_select_gpio(ILI9486_RST);
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gpio_set_direction(ILI9486_RST, GPIO_MODE_OUTPUT);
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//Reset the display
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gpio_set_level(ILI9486_RST, 0);
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vTaskDelay(100 / portTICK_RATE_MS);
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gpio_set_level(ILI9486_RST, 1);
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vTaskDelay(100 / portTICK_RATE_MS);
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#endif
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ESP_LOGI(TAG, "ILI9486 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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ili9486_send_cmd(ili_init_cmds[cmd].cmd);
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ili9486_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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ili9486_set_orientation(CONFIG_LV_DISPLAY_ORIENTATION);
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}
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void ili9486_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] = {0};
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uint32_t size = 0;
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/*Column addresses*/
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ili9486_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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ili9486_send_data(data, 4);
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/*Page addresses*/
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ili9486_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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ili9486_send_data(data, 4);
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/*Memory write*/
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ili9486_send_cmd(0x2C);
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size = lv_area_get_width(area) * lv_area_get_height(area);
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ili9486_send_color((void*) color_map, size * 2);
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}
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/**********************
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* STATIC FUNCTIONS
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**********************/
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static void ili9486_send_cmd(uint8_t cmd)
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{
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uint8_t to16bit[] = {
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0x00, cmd
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};
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disp_wait_for_pending_transactions();
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gpio_set_level(ILI9486_DC, 0); /*Command mode*/
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disp_spi_send_data(to16bit, sizeof to16bit);
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}
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static void ili9486_send_data(void * data, uint16_t length)
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{
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uint32_t i;
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uint8_t to16bit[32];
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uint8_t * dummy = data;
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for(i=0; i < (length); i++)
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{
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to16bit[2*i+1] = dummy[i];
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to16bit[2*i] = 0x00;
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}
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disp_wait_for_pending_transactions();
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gpio_set_level(ILI9486_DC, 1); /*Data mode*/
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disp_spi_send_data(to16bit, (length*2));
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}
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static void ili9486_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(ILI9486_DC, 1); /*Data mode*/
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disp_spi_send_colors(data, length);
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}
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static void ili9486_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_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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ili9486_send_cmd(0x36);
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ili9486_send_data((void *) &data[orientation], 1);
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}
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