mirror of
https://github.com/espressif/esp-idf.git
synced 2024-09-21 06:56:11 -04:00
265 lines
8.8 KiB
C
265 lines
8.8 KiB
C
/*
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* SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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// #define LOG_LOCAL_LEVEL ESP_LOG_DEBUG
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#include <stdlib.h>
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#include <sys/cdefs.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_lcd_panel_interface.h"
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#include "esp_lcd_panel_io.h"
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#include "esp_lcd_panel_vendor.h"
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#include "esp_lcd_panel_ops.h"
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#include "esp_lcd_panel_commands.h"
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#include "driver/gpio.h"
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#include "esp_log.h"
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#include "esp_check.h"
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static const char *TAG = "lcd_panel.st7789";
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static esp_err_t panel_st7789_del(esp_lcd_panel_t *panel);
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static esp_err_t panel_st7789_reset(esp_lcd_panel_t *panel);
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static esp_err_t panel_st7789_init(esp_lcd_panel_t *panel);
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static esp_err_t panel_st7789_draw_bitmap(esp_lcd_panel_t *panel, int x_start, int y_start, int x_end, int y_end, const void *color_data);
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static esp_err_t panel_st7789_invert_color(esp_lcd_panel_t *panel, bool invert_color_data);
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static esp_err_t panel_st7789_mirror(esp_lcd_panel_t *panel, bool mirror_x, bool mirror_y);
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static esp_err_t panel_st7789_swap_xy(esp_lcd_panel_t *panel, bool swap_axes);
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static esp_err_t panel_st7789_set_gap(esp_lcd_panel_t *panel, int x_gap, int y_gap);
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static esp_err_t panel_st7789_disp_off(esp_lcd_panel_t *panel, bool off);
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typedef struct {
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esp_lcd_panel_t base;
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esp_lcd_panel_io_handle_t io;
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int reset_gpio_num;
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bool reset_level;
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int x_gap;
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int y_gap;
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unsigned int bits_per_pixel;
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uint8_t madctl_val; // save current value of LCD_CMD_MADCTL register
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uint8_t colmod_cal; // save surrent value of LCD_CMD_COLMOD register
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} st7789_panel_t;
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esp_err_t esp_lcd_new_panel_st7789(const esp_lcd_panel_io_handle_t io, const esp_lcd_panel_dev_config_t *panel_dev_config, esp_lcd_panel_handle_t *ret_panel)
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{
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esp_err_t ret = ESP_OK;
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st7789_panel_t *st7789 = NULL;
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ESP_GOTO_ON_FALSE(io && panel_dev_config && ret_panel, ESP_ERR_INVALID_ARG, err, TAG, "invalid argument");
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st7789 = calloc(1, sizeof(st7789_panel_t));
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ESP_GOTO_ON_FALSE(st7789, ESP_ERR_NO_MEM, err, TAG, "no mem for st7789 panel");
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if (panel_dev_config->reset_gpio_num >= 0) {
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gpio_config_t io_conf = {
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.mode = GPIO_MODE_OUTPUT,
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.pin_bit_mask = 1ULL << panel_dev_config->reset_gpio_num,
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};
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ESP_GOTO_ON_ERROR(gpio_config(&io_conf), err, TAG, "configure GPIO for RST line failed");
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}
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switch (panel_dev_config->color_space) {
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case ESP_LCD_COLOR_SPACE_RGB:
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st7789->madctl_val = 0;
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break;
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case ESP_LCD_COLOR_SPACE_BGR:
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st7789->madctl_val |= LCD_CMD_BGR_BIT;
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break;
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default:
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ESP_GOTO_ON_FALSE(false, ESP_ERR_NOT_SUPPORTED, err, TAG, "unsupported color space");
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break;
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}
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switch (panel_dev_config->bits_per_pixel) {
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case 16:
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st7789->colmod_cal = 0x55;
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break;
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case 18:
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st7789->colmod_cal = 0x66;
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break;
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default:
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ESP_GOTO_ON_FALSE(false, ESP_ERR_NOT_SUPPORTED, err, TAG, "unsupported pixel width");
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break;
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}
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st7789->io = io;
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st7789->bits_per_pixel = panel_dev_config->bits_per_pixel;
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st7789->reset_gpio_num = panel_dev_config->reset_gpio_num;
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st7789->reset_level = panel_dev_config->flags.reset_active_high;
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st7789->base.del = panel_st7789_del;
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st7789->base.reset = panel_st7789_reset;
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st7789->base.init = panel_st7789_init;
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st7789->base.draw_bitmap = panel_st7789_draw_bitmap;
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st7789->base.invert_color = panel_st7789_invert_color;
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st7789->base.set_gap = panel_st7789_set_gap;
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st7789->base.mirror = panel_st7789_mirror;
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st7789->base.swap_xy = panel_st7789_swap_xy;
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st7789->base.disp_off = panel_st7789_disp_off;
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*ret_panel = &(st7789->base);
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ESP_LOGD(TAG, "new st7789 panel @%p", st7789);
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return ESP_OK;
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err:
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if (st7789) {
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if (panel_dev_config->reset_gpio_num >= 0) {
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gpio_reset_pin(panel_dev_config->reset_gpio_num);
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}
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free(st7789);
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}
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return ret;
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}
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static esp_err_t panel_st7789_del(esp_lcd_panel_t *panel)
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{
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st7789_panel_t *st7789 = __containerof(panel, st7789_panel_t, base);
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if (st7789->reset_gpio_num >= 0) {
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gpio_reset_pin(st7789->reset_gpio_num);
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}
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ESP_LOGD(TAG, "del st7789 panel @%p", st7789);
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free(st7789);
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return ESP_OK;
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}
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static esp_err_t panel_st7789_reset(esp_lcd_panel_t *panel)
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{
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st7789_panel_t *st7789 = __containerof(panel, st7789_panel_t, base);
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esp_lcd_panel_io_handle_t io = st7789->io;
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// perform hardware reset
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if (st7789->reset_gpio_num >= 0) {
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gpio_set_level(st7789->reset_gpio_num, st7789->reset_level);
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vTaskDelay(pdMS_TO_TICKS(10));
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gpio_set_level(st7789->reset_gpio_num, !st7789->reset_level);
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vTaskDelay(pdMS_TO_TICKS(10));
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} else { // perform software reset
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esp_lcd_panel_io_tx_param(io, LCD_CMD_SWRESET, NULL, 0);
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vTaskDelay(pdMS_TO_TICKS(20)); // spec, wait at least 5m before sending new command
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}
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return ESP_OK;
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}
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static esp_err_t panel_st7789_init(esp_lcd_panel_t *panel)
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{
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st7789_panel_t *st7789 = __containerof(panel, st7789_panel_t, base);
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esp_lcd_panel_io_handle_t io = st7789->io;
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// LCD goes into sleep mode and display will be turned off after power on reset, exit sleep mode first
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esp_lcd_panel_io_tx_param(io, LCD_CMD_SLPOUT, NULL, 0);
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vTaskDelay(pdMS_TO_TICKS(100));
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esp_lcd_panel_io_tx_param(io, LCD_CMD_MADCTL, (uint8_t[]) {
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st7789->madctl_val,
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}, 1);
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esp_lcd_panel_io_tx_param(io, LCD_CMD_COLMOD, (uint8_t[]) {
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st7789->colmod_cal,
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}, 1);
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// turn on display
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esp_lcd_panel_io_tx_param(io, LCD_CMD_DISPON, NULL, 0);
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return ESP_OK;
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}
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static esp_err_t panel_st7789_draw_bitmap(esp_lcd_panel_t *panel, int x_start, int y_start, int x_end, int y_end, const void *color_data)
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{
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st7789_panel_t *st7789 = __containerof(panel, st7789_panel_t, base);
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assert((x_start < x_end) && (y_start < y_end) && "start position must be smaller than end position");
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esp_lcd_panel_io_handle_t io = st7789->io;
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x_start += st7789->x_gap;
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x_end += st7789->x_gap;
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y_start += st7789->y_gap;
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y_end += st7789->y_gap;
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// define an area of frame memory where MCU can access
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esp_lcd_panel_io_tx_param(io, LCD_CMD_CASET, (uint8_t[]) {
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(x_start >> 8) & 0xFF,
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x_start & 0xFF,
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((x_end - 1) >> 8) & 0xFF,
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(x_end - 1) & 0xFF,
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}, 4);
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esp_lcd_panel_io_tx_param(io, LCD_CMD_RASET, (uint8_t[]) {
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(y_start >> 8) & 0xFF,
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y_start & 0xFF,
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((y_end - 1) >> 8) & 0xFF,
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(y_end - 1) & 0xFF,
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}, 4);
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// transfer frame buffer
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size_t len = (x_end - x_start) * (y_end - y_start) * st7789->bits_per_pixel / 8;
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esp_lcd_panel_io_tx_color(io, LCD_CMD_RAMWR, color_data, len);
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return ESP_OK;
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}
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static esp_err_t panel_st7789_invert_color(esp_lcd_panel_t *panel, bool invert_color_data)
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{
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st7789_panel_t *st7789 = __containerof(panel, st7789_panel_t, base);
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esp_lcd_panel_io_handle_t io = st7789->io;
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int command = 0;
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if (invert_color_data) {
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command = LCD_CMD_INVON;
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} else {
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command = LCD_CMD_INVOFF;
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}
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esp_lcd_panel_io_tx_param(io, command, NULL, 0);
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return ESP_OK;
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}
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static esp_err_t panel_st7789_mirror(esp_lcd_panel_t *panel, bool mirror_x, bool mirror_y)
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{
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st7789_panel_t *st7789 = __containerof(panel, st7789_panel_t, base);
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esp_lcd_panel_io_handle_t io = st7789->io;
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if (mirror_x) {
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st7789->madctl_val |= LCD_CMD_MX_BIT;
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} else {
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st7789->madctl_val &= ~LCD_CMD_MX_BIT;
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}
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if (mirror_y) {
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st7789->madctl_val |= LCD_CMD_MY_BIT;
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} else {
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st7789->madctl_val &= ~LCD_CMD_MY_BIT;
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}
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esp_lcd_panel_io_tx_param(io, LCD_CMD_MADCTL, (uint8_t[]) {
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st7789->madctl_val
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}, 1);
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return ESP_OK;
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}
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static esp_err_t panel_st7789_swap_xy(esp_lcd_panel_t *panel, bool swap_axes)
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{
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st7789_panel_t *st7789 = __containerof(panel, st7789_panel_t, base);
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esp_lcd_panel_io_handle_t io = st7789->io;
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if (swap_axes) {
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st7789->madctl_val |= LCD_CMD_MV_BIT;
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} else {
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st7789->madctl_val &= ~LCD_CMD_MV_BIT;
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}
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esp_lcd_panel_io_tx_param(io, LCD_CMD_MADCTL, (uint8_t[]) {
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st7789->madctl_val
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}, 1);
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return ESP_OK;
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}
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static esp_err_t panel_st7789_set_gap(esp_lcd_panel_t *panel, int x_gap, int y_gap)
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{
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st7789_panel_t *st7789 = __containerof(panel, st7789_panel_t, base);
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st7789->x_gap = x_gap;
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st7789->y_gap = y_gap;
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return ESP_OK;
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}
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static esp_err_t panel_st7789_disp_off(esp_lcd_panel_t *panel, bool off)
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{
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st7789_panel_t *st7789 = __containerof(panel, st7789_panel_t, base);
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esp_lcd_panel_io_handle_t io = st7789->io;
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int command = 0;
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if (off) {
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command = LCD_CMD_DISPOFF;
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} else {
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command = LCD_CMD_DISPON;
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}
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esp_lcd_panel_io_tx_param(io, command, NULL, 0);
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return ESP_OK;
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}
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