160 lines
5.3 KiB
C
160 lines
5.3 KiB
C
#include <stdio.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_err.h"
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#include "driver/gpio.h"
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#include "esp_lcd_panel_io.h"
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#include "esp_lcd_panel_dev.h"
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#include "esp_lcd_panel_ops.h"
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#include "esp_lcd_io_spi.h"
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#include "esp_lcd_st7305.h"
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#define LCD_HOST SPI2_HOST
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#define LCD_PIN_SCLK 6
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#define LCD_PIN_SDI 7
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#define LCD_PIN_RST 5
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#define LCD_PIN_DC 4
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#define LCD_PIN_CS 3
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#define LCD_PIN_TE 2
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#define DC_HIGH gpio_set_level(LCD_PIN_DC, 1)
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#define DC_LOW gpio_set_level(LCD_PIN_DC, 0)
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#define CS_HIGH gpio_set_level(LCD_PIN_CS, 1)
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#define CS_LOW gpio_set_level(LCD_PIN_CS, 0)
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// 绘制测试图案
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// 画两条边缘线和一个中心点
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bool is_rotated = 0; // 跟踪旋转状态
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// 绘制测试图案函数
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void draw_test_pattern(uint8_t *buffer, bool rotated)
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{
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memset(buffer, 0, ST7305_RESOLUTION_HOR * ST7305_RESOLUTION_VER / 8);
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int width = rotated ? ST7305_RESOLUTION_VER : ST7305_RESOLUTION_HOR;
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int height = rotated ? ST7305_RESOLUTION_HOR : ST7305_RESOLUTION_VER;
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// 画左边竖线
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for (int y = 0; y < height; y++)
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{
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int x = 10; // 距离左边10像素
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uint16_t byte_idx = (y >> 3) * width + x;
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uint8_t bit_pos = y & 0x07;
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if (byte_idx < width * ((height + 7) >> 3))
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{
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buffer[byte_idx] |= (1 << bit_pos);
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}
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}
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// 画右边竖线
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for (int y = 0; y < height; y++)
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{
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int x = width - 10; // 距离右边10像素
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uint16_t byte_idx = (y >> 3) * width + x;
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uint8_t bit_pos = y & 0x07;
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if (byte_idx < width * ((height + 7) >> 3))
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{
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buffer[byte_idx] |= (1 << bit_pos);
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}
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}
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// 在中心画一个5x5的方块
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int center_x = width / 2;
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int center_y = height / 2;
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for (int y = center_y - 2; y <= center_y + 2; y++)
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{
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for (int x = center_x - 2; x <= center_x + 2; x++)
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{
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uint16_t byte_idx = (y >> 3) * width + x;
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uint8_t bit_pos = y & 0x07;
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if (byte_idx < width * ((height + 7) >> 3))
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{
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buffer[byte_idx] |= (1 << bit_pos);
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}
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}
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}
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}
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void app_main(void)
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{
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/*创建SPI总线*/
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spi_bus_config_t buscfg = {
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.sclk_io_num = LCD_PIN_SCLK,
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.mosi_io_num = LCD_PIN_SDI,
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.miso_io_num = -1,
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.quadwp_io_num = -1,
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.quadhd_io_num = -1,
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.max_transfer_sz = 200 * 200 / 8,
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};
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ESP_ERROR_CHECK(spi_bus_initialize(LCD_HOST, &buscfg, SPI_DMA_CH_AUTO)); // 启用 DMA
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/*从 SPI 总线分配一个 LCD IO 设备句柄*/
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esp_lcd_panel_io_handle_t io_handle = NULL;
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esp_lcd_panel_io_spi_config_t io_config = {
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.dc_gpio_num = LCD_PIN_DC,
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.cs_gpio_num = LCD_PIN_CS,
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.pclk_hz = 20 * 1000 * 1000,
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.lcd_cmd_bits = 8,
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.lcd_param_bits = 8,
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.spi_mode = 0,
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.trans_queue_depth = 10,
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};
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// 将 LCD 连接到 SPI 总线
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ESP_ERROR_CHECK(esp_lcd_new_panel_io_spi((esp_lcd_spi_bus_handle_t)LCD_HOST, &io_config, &io_handle));
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esp_lcd_panel_handle_t panel_handle = NULL;
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esp_lcd_panel_dev_config_t panel_config = {
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.reset_gpio_num = LCD_PIN_RST,
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.rgb_endian = LCD_RGB_ENDIAN_RGB,
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.bits_per_pixel = 1,
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};
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// 为 ST7305 创建 LCD 面板句柄，并指定 SPI IO 设备句柄
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ESP_ERROR_CHECK(esp_lcd_new_panel_st7305(io_handle, &panel_config, &panel_handle));
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ESP_ERROR_CHECK(esp_lcd_panel_reset(panel_handle));
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ESP_ERROR_CHECK(esp_lcd_panel_init(panel_handle));
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ESP_ERROR_CHECK(esp_lcd_panel_swap_xy(panel_handle, is_rotated));
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// ESP_ERROR_CHECK(esp_lcd_panel_mirror(panel_handle, false, true));
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ESP_ERROR_CHECK(esp_lcd_panel_mirror(panel_handle, false, false));
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ESP_ERROR_CHECK(esp_lcd_panel_invert_color(panel_handle, true));
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ESP_ERROR_CHECK(esp_lcd_panel_disp_on_off(panel_handle, true));
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printf("Display simple pattern");
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// 准备测试数据
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uint8_t *test_pattern = heap_caps_malloc(ST7305_RESOLUTION_HOR * ST7305_RESOLUTION_VER / 8, MALLOC_CAP_DMA);
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assert(test_pattern);
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memset(test_pattern, 0x00, ST7305_RESOLUTION_HOR * ST7305_RESOLUTION_VER / 8);
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// 初始填充并显示：累积字节扫描，完成一次后翻转配色并继续扫描
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size_t buf_size = ST7305_RESOLUTION_HOR * ST7305_RESOLUTION_VER / 8;
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size_t idx = 0;
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bool scanned_is_ff = true; // true：已扫描字节为 0xFF，false：已扫描字节为 0x00
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while (1)
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{
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if (scanned_is_ff) {
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// 已扫描区域为 0xFF，未扫描为 0x00
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memset(test_pattern, 0x00, buf_size);
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memset(test_pattern, 0xFF, idx + 1);
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} else {
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// 已扫描区域为 0x00，未扫描为 0xFF（配色相反）
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memset(test_pattern, 0xFF, buf_size);
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memset(test_pattern, 0x00, idx + 1);
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}
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ESP_ERROR_CHECK(esp_lcd_panel_draw_bitmap(panel_handle, 0, 0, ST7305_RESOLUTION_HOR, ST7305_RESOLUTION_VER, test_pattern));
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idx++;
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if (idx >= buf_size) {
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// 完成一次扫描，重置索引并翻转配色
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idx = 0;
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scanned_is_ff = !scanned_is_ff;
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vTaskDelay(pdMS_TO_TICKS(200)); // 稍作停顿以便观察配色翻转
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} else {
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vTaskDelay(pdMS_TO_TICKS(2)); // 平常的扫描速度
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}
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}
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// 释放资源
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free(test_pattern);
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}
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