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| #include <stdio.h>
#include "esp_log.h"
#include "esp_err.h"
#include "driver/spi_master.h"
#include "esp_lcd_panel_io.h"
#include "esp_lcd_panel_ops.h"
#include "esp_lcd_panel_st7789.h"
#include "esp_lcd_panel_vendor.h"
#include "esp_lcd_io_spi.h" // 你给的头文件
#include "driver/gpio.h"
#define BL_GPIO 15
#define LCD_H_RES 320
#define LCD_V_RES 480
static const char *TAG = "st7789_demo";
void app_main(void)
{
// 先配置背光引脚为输出并拉高，打开背光
gpio_config_t io_conf = {
.pin_bit_mask = (1ULL << BL_GPIO),
.mode = GPIO_MODE_OUTPUT,
.pull_up_en = GPIO_PULLUP_DISABLE,
.pull_down_en = GPIO_PULLDOWN_DISABLE,
.intr_type = GPIO_INTR_DISABLE,
};
gpio_config(&io_conf);
gpio_set_level(BL_GPIO, 1); // 1表示打开背光
// 1. SPI 总线配置
spi_bus_config_t bus_config = {
.miso_io_num = -1, // ST7789 不需要读数据，设置为 -1
.mosi_io_num = 10, // MOSI 引脚，根据实际接线修改
.sclk_io_num = 11, // CLK 引脚，根据实际接线修改
.quadwp_io_num = -1,
.quadhd_io_num = -1,
.max_transfer_sz = 320 * 240 * 2 + 8,
};
ESP_ERROR_CHECK(spi_bus_initialize(SPI2_HOST, &bus_config, SPI_DMA_CH_AUTO));
// 2. LCD 面板 IO 配置（SPI 方式）
esp_lcd_panel_io_spi_config_t io_config = {
.dc_gpio_num = 13,
.cs_gpio_num = 12,
.pclk_hz = 40 * 1000 * 1000,
.spi_mode = 0,
.trans_queue_depth = 10,
.lcd_cmd_bits = 8, // 通常命令是8位
.lcd_param_bits = 8, // 参数也是8位
.cs_ena_pretrans = 1, // 可选，根据硬件调整
.cs_ena_posttrans = 1, // 可选，根据硬件调整
.flags = {
.dc_high_on_cmd = 0,
.dc_low_on_data = 0,
.dc_low_on_param = 0,
.octal_mode = 0,
.quad_mode = 0,
.sio_mode = 0,
.lsb_first = 0,
.cs_high_active = 0,
},
.on_color_trans_done = NULL,
.user_ctx = NULL,
};
esp_lcd_panel_io_handle_t io_handle = NULL;
ESP_ERROR_CHECK(esp_lcd_new_panel_io_spi(SPI2_HOST, &io_config, &io_handle));
// 3. LCD 面板设备配置
esp_lcd_panel_dev_config_t panel_dev_config = {
.reset_gpio_num = 14,
.rgb_ele_order = LCD_RGB_ELEMENT_ORDER_BGR,
.data_endian = LCD_RGB_DATA_ENDIAN_BIG, // 默认即可
.bits_per_pixel = 16,
.flags = {
.reset_active_high = 0,
},
.vendor_config = NULL
};
// 4. 创建 ST7789 面板实例
esp_lcd_panel_handle_t panel_handle = NULL;
ESP_ERROR_CHECK(esp_lcd_new_panel_st7789(io_handle, &panel_dev_config, &panel_handle));
// 5. 复位屏幕，初始化显示
ESP_LOGI(TAG, "复位 LCD");
ESP_ERROR_CHECK(esp_lcd_panel_reset(panel_handle));
ESP_LOGI(TAG, "初始化 LCD");
ESP_ERROR_CHECK(esp_lcd_panel_init(panel_handle));
// 6. 设置屏幕方向，镜像和偏移
ESP_LOGI(TAG, "设置镜像和偏移");
ESP_ERROR_CHECK(esp_lcd_panel_swap_xy(panel_handle, false));
ESP_ERROR_CHECK(esp_lcd_panel_mirror(panel_handle, false, true));
ESP_ERROR_CHECK(esp_lcd_panel_set_gap(panel_handle, 0, 0));
ESP_LOGI(TAG, "准备绘图");
uint16_t *buf = heap_caps_malloc(240 * 320 * sizeof(uint16_t), MALLOC_CAP_DMA);
for (int i = 0; i < 240 * 320; i++) {
buf[i] = 0xf800; // 红色
}
esp_lcd_panel_draw_bitmap(panel_handle, 0, 0, 240, 320, buf);
ESP_LOGI(TAG, "ST7789 LCD 初始化完成");
}
|
