Rdzleo
4547e9e732
1、原有ESP32-S3功能基本实现，有些小Bug需要修复； 2、RAM内存不够导致Img界面图片显示画质不完整，并且当前未开启蓝牙功能，开机蓝牙功能后RAM内存压力加剧；
406 lines
14 KiB
C
406 lines
14 KiB
C
#include "gpio.h"
|
||
#include "esp_lvgl_port.h"
|
||
#include "esp_lcd_st77916.h"
|
||
#include "esp_err.h"
|
||
#include "esp_log.h"
|
||
#include "lcd.h"
|
||
#include "esp_lcd_touch_cst816s.h"
|
||
#include <string.h>
|
||
#include "esp_heap_caps.h"
|
||
|
||
static lv_disp_t * disp_handle = NULL;
|
||
static esp_lcd_panel_handle_t panel_handle = NULL;
|
||
static esp_lcd_panel_io_handle_t io_handle = NULL;
|
||
static esp_lcd_touch_handle_t touch_handle;
|
||
static esp_lcd_panel_io_handle_t tp_io_handle = NULL;
|
||
|
||
// 从参考项目 spi_lcd 提取的正确LCD初始化命令（匹配当前LCD面板硬件）
|
||
static const st77916_lcd_init_cmd_t lcd_init_cmds[] = {
|
||
{0xF0, (uint8_t[]){0x28}, 1, 0},
|
||
{0xF2, (uint8_t[]){0x28}, 1, 0},
|
||
{0x73, (uint8_t[]){0xF0}, 1, 0},
|
||
{0x7C, (uint8_t[]){0xD1}, 1, 0},
|
||
{0x83, (uint8_t[]){0xE0}, 1, 0},
|
||
{0x84, (uint8_t[]){0x61}, 1, 0},
|
||
{0xF2, (uint8_t[]){0x82}, 1, 0},
|
||
{0xF0, (uint8_t[]){0x00}, 1, 0},
|
||
{0xF0, (uint8_t[]){0x01}, 1, 0},
|
||
{0xF1, (uint8_t[]){0x01}, 1, 0},
|
||
{0xB0, (uint8_t[]){0x5E}, 1, 0},
|
||
{0xB1, (uint8_t[]){0x55}, 1, 0},
|
||
{0xB2, (uint8_t[]){0x24}, 1, 0},
|
||
{0xB3, (uint8_t[]){0x01}, 1, 0},
|
||
{0xB4, (uint8_t[]){0x87}, 1, 0},
|
||
{0xB5, (uint8_t[]){0x44}, 1, 0},
|
||
{0xB6, (uint8_t[]){0x8B}, 1, 0},
|
||
{0xB7, (uint8_t[]){0x40}, 1, 0},
|
||
{0xB8, (uint8_t[]){0x86}, 1, 0},
|
||
{0xB9, (uint8_t[]){0x15}, 1, 0},
|
||
{0xBA, (uint8_t[]){0x00}, 1, 0},
|
||
{0xBB, (uint8_t[]){0x08}, 1, 0},
|
||
{0xBC, (uint8_t[]){0x08}, 1, 0},
|
||
{0xBD, (uint8_t[]){0x00}, 1, 0},
|
||
{0xBE, (uint8_t[]){0x00}, 1, 0},
|
||
{0xBF, (uint8_t[]){0x07}, 1, 0},
|
||
{0xC0, (uint8_t[]){0x80}, 1, 0},
|
||
{0xC1, (uint8_t[]){0x10}, 1, 0},
|
||
{0xC2, (uint8_t[]){0x37}, 1, 0},
|
||
{0xC3, (uint8_t[]){0x80}, 1, 0},
|
||
{0xC4, (uint8_t[]){0x10}, 1, 0},
|
||
{0xC5, (uint8_t[]){0x37}, 1, 0},
|
||
{0xC6, (uint8_t[]){0xA9}, 1, 0},
|
||
{0xC7, (uint8_t[]){0x41}, 1, 0},
|
||
{0xC8, (uint8_t[]){0x01}, 1, 0},
|
||
{0xC9, (uint8_t[]){0xA9}, 1, 0},
|
||
{0xCA, (uint8_t[]){0x41}, 1, 0},
|
||
{0xCB, (uint8_t[]){0x01}, 1, 0},
|
||
{0xCC, (uint8_t[]){0x7F}, 1, 0},
|
||
{0xCD, (uint8_t[]){0x7F}, 1, 0},
|
||
{0xCE, (uint8_t[]){0xFF}, 1, 0},
|
||
{0xD0, (uint8_t[]){0x91}, 1, 0},
|
||
{0xD1, (uint8_t[]){0x68}, 1, 0},
|
||
{0xD2, (uint8_t[]){0x68}, 1, 0},
|
||
{0xF5, (uint8_t[]){0x00, 0xA5}, 2, 0},
|
||
{0xDD, (uint8_t[]){0x40}, 1, 0},
|
||
{0xDE, (uint8_t[]){0x40}, 1, 0},
|
||
{0xF1, (uint8_t[]){0x10}, 1, 0},
|
||
{0xF0, (uint8_t[]){0x00}, 1, 0},
|
||
{0xF0, (uint8_t[]){0x02}, 1, 0},
|
||
{0xE0, (uint8_t[]){0xF0, 0x10, 0x18, 0x0D, 0x0C, 0x38, 0x3E, 0x44, 0x51, 0x39, 0x15, 0x15, 0x30, 0x34}, 14, 0},
|
||
{0xE1, (uint8_t[]){0xF0, 0x0F, 0x17, 0x0D, 0x0B, 0x07, 0x3E, 0x33, 0x51, 0x39, 0x15, 0x15, 0x30, 0x34}, 14, 0},
|
||
{0xF0, (uint8_t[]){0x10}, 1, 0},
|
||
{0xF3, (uint8_t[]){0x10}, 1, 0},
|
||
{0xE0, (uint8_t[]){0x08}, 1, 0},
|
||
{0xE1, (uint8_t[]){0x00}, 1, 0},
|
||
{0xE2, (uint8_t[]){0x00}, 1, 0},
|
||
{0xE3, (uint8_t[]){0x00}, 1, 0},
|
||
{0xE4, (uint8_t[]){0xE0}, 1, 0},
|
||
{0xE5, (uint8_t[]){0x06}, 1, 0},
|
||
{0xE6, (uint8_t[]){0x21}, 1, 0},
|
||
{0xE7, (uint8_t[]){0x03}, 1, 0},
|
||
{0xE8, (uint8_t[]){0x05}, 1, 0},
|
||
{0xE9, (uint8_t[]){0x02}, 1, 0},
|
||
{0xEA, (uint8_t[]){0xE9}, 1, 0},
|
||
{0xEB, (uint8_t[]){0x00}, 1, 0},
|
||
{0xEC, (uint8_t[]){0x00}, 1, 0},
|
||
{0xED, (uint8_t[]){0x14}, 1, 0},
|
||
{0xEE, (uint8_t[]){0xFF}, 1, 0},
|
||
{0xEF, (uint8_t[]){0x00}, 1, 0},
|
||
{0xF8, (uint8_t[]){0xFF}, 1, 0},
|
||
{0xF9, (uint8_t[]){0x00}, 1, 0},
|
||
{0xFA, (uint8_t[]){0x00}, 1, 0},
|
||
{0xFB, (uint8_t[]){0x30}, 1, 0},
|
||
{0xFC, (uint8_t[]){0x00}, 1, 0},
|
||
{0xFD, (uint8_t[]){0x00}, 1, 0},
|
||
{0xFE, (uint8_t[]){0x00}, 1, 0},
|
||
{0xFF, (uint8_t[]){0x00}, 1, 0},
|
||
{0x60, (uint8_t[]){0x40}, 1, 0},
|
||
{0x61, (uint8_t[]){0x05}, 1, 0},
|
||
{0x62, (uint8_t[]){0x00}, 1, 0},
|
||
{0x63, (uint8_t[]){0x42}, 1, 0},
|
||
{0x64, (uint8_t[]){0xDA}, 1, 0},
|
||
{0x65, (uint8_t[]){0x00}, 1, 0},
|
||
{0x66, (uint8_t[]){0x00}, 1, 0},
|
||
{0x67, (uint8_t[]){0x00}, 1, 0},
|
||
{0x68, (uint8_t[]){0x00}, 1, 0},
|
||
{0x69, (uint8_t[]){0x00}, 1, 0},
|
||
{0x6A, (uint8_t[]){0x00}, 1, 0},
|
||
{0x6B, (uint8_t[]){0x00}, 1, 0},
|
||
{0x70, (uint8_t[]){0x40}, 1, 0},
|
||
{0x71, (uint8_t[]){0x04}, 1, 0},
|
||
{0x72, (uint8_t[]){0x00}, 1, 0},
|
||
{0x73, (uint8_t[]){0x42}, 1, 0},
|
||
{0x74, (uint8_t[]){0xD9}, 1, 0},
|
||
{0x75, (uint8_t[]){0x00}, 1, 0},
|
||
{0x76, (uint8_t[]){0x00}, 1, 0},
|
||
{0x77, (uint8_t[]){0x00}, 1, 0},
|
||
{0x78, (uint8_t[]){0x00}, 1, 0},
|
||
{0x79, (uint8_t[]){0x00}, 1, 0},
|
||
{0x7A, (uint8_t[]){0x00}, 1, 0},
|
||
{0x7B, (uint8_t[]){0x00}, 1, 0},
|
||
{0x80, (uint8_t[]){0x48}, 1, 0},
|
||
{0x81, (uint8_t[]){0x00}, 1, 0},
|
||
{0x82, (uint8_t[]){0x07}, 1, 0},
|
||
{0x83, (uint8_t[]){0x02}, 1, 0},
|
||
{0x84, (uint8_t[]){0xD7}, 1, 0},
|
||
{0x85, (uint8_t[]){0x04}, 1, 0},
|
||
{0x86, (uint8_t[]){0x00}, 1, 0},
|
||
{0x87, (uint8_t[]){0x00}, 1, 0},
|
||
{0x88, (uint8_t[]){0x48}, 1, 0},
|
||
{0x89, (uint8_t[]){0x00}, 1, 0},
|
||
{0x8A, (uint8_t[]){0x09}, 1, 0},
|
||
{0x8B, (uint8_t[]){0x02}, 1, 0},
|
||
{0x8C, (uint8_t[]){0xD9}, 1, 0},
|
||
{0x8D, (uint8_t[]){0x04}, 1, 0},
|
||
{0x8E, (uint8_t[]){0x00}, 1, 0},
|
||
{0x8F, (uint8_t[]){0x00}, 1, 0},
|
||
{0x90, (uint8_t[]){0x48}, 1, 0},
|
||
{0x91, (uint8_t[]){0x00}, 1, 0},
|
||
{0x92, (uint8_t[]){0x0B}, 1, 0},
|
||
{0x93, (uint8_t[]){0x02}, 1, 0},
|
||
{0x94, (uint8_t[]){0xDB}, 1, 0},
|
||
{0x95, (uint8_t[]){0x04}, 1, 0},
|
||
{0x96, (uint8_t[]){0x00}, 1, 0},
|
||
{0x97, (uint8_t[]){0x00}, 1, 0},
|
||
{0x98, (uint8_t[]){0x48}, 1, 0},
|
||
{0x99, (uint8_t[]){0x00}, 1, 0},
|
||
{0x9A, (uint8_t[]){0x0D}, 1, 0},
|
||
{0x9B, (uint8_t[]){0x02}, 1, 0},
|
||
{0x9C, (uint8_t[]){0xDD}, 1, 0},
|
||
{0x9D, (uint8_t[]){0x04}, 1, 0},
|
||
{0x9E, (uint8_t[]){0x00}, 1, 0},
|
||
{0x9F, (uint8_t[]){0x00}, 1, 0},
|
||
{0xA0, (uint8_t[]){0x48}, 1, 0},
|
||
{0xA1, (uint8_t[]){0x00}, 1, 0},
|
||
{0xA2, (uint8_t[]){0x06}, 1, 0},
|
||
{0xA3, (uint8_t[]){0x02}, 1, 0},
|
||
{0xA4, (uint8_t[]){0xD6}, 1, 0},
|
||
{0xA5, (uint8_t[]){0x04}, 1, 0},
|
||
{0xA6, (uint8_t[]){0x00}, 1, 0},
|
||
{0xA7, (uint8_t[]){0x00}, 1, 0},
|
||
{0xA8, (uint8_t[]){0x48}, 1, 0},
|
||
{0xA9, (uint8_t[]){0x00}, 1, 0},
|
||
{0xAA, (uint8_t[]){0x08}, 1, 0},
|
||
{0xAB, (uint8_t[]){0x02}, 1, 0},
|
||
{0xAC, (uint8_t[]){0xD8}, 1, 0},
|
||
{0xAD, (uint8_t[]){0x04}, 1, 0},
|
||
{0xAE, (uint8_t[]){0x00}, 1, 0},
|
||
{0xAF, (uint8_t[]){0x00}, 1, 0},
|
||
{0xB0, (uint8_t[]){0x48}, 1, 0},
|
||
{0xB1, (uint8_t[]){0x00}, 1, 0},
|
||
{0xB2, (uint8_t[]){0x0A}, 1, 0},
|
||
{0xB3, (uint8_t[]){0x02}, 1, 0},
|
||
{0xB4, (uint8_t[]){0xDA}, 1, 0},
|
||
{0xB5, (uint8_t[]){0x04}, 1, 0},
|
||
{0xB6, (uint8_t[]){0x00}, 1, 0},
|
||
{0xB7, (uint8_t[]){0x00}, 1, 0},
|
||
{0xB8, (uint8_t[]){0x48}, 1, 0},
|
||
{0xB9, (uint8_t[]){0x00}, 1, 0},
|
||
{0xBA, (uint8_t[]){0x0C}, 1, 0},
|
||
{0xBB, (uint8_t[]){0x02}, 1, 0},
|
||
{0xBC, (uint8_t[]){0xDC}, 1, 0},
|
||
{0xBD, (uint8_t[]){0x04}, 1, 0},
|
||
{0xBE, (uint8_t[]){0x00}, 1, 0},
|
||
{0xBF, (uint8_t[]){0x00}, 1, 0},
|
||
{0xC0, (uint8_t[]){0x10}, 1, 0},
|
||
{0xC1, (uint8_t[]){0x47}, 1, 0},
|
||
{0xC2, (uint8_t[]){0x56}, 1, 0},
|
||
{0xC3, (uint8_t[]){0x65}, 1, 0},
|
||
{0xC4, (uint8_t[]){0x74}, 1, 0},
|
||
{0xC5, (uint8_t[]){0x88}, 1, 0},
|
||
{0xC6, (uint8_t[]){0x99}, 1, 0},
|
||
{0xC7, (uint8_t[]){0x01}, 1, 0},
|
||
{0xC8, (uint8_t[]){0xBB}, 1, 0},
|
||
{0xC9, (uint8_t[]){0xAA}, 1, 0},
|
||
{0xD0, (uint8_t[]){0x10}, 1, 0},
|
||
{0xD1, (uint8_t[]){0x47}, 1, 0},
|
||
{0xD2, (uint8_t[]){0x56}, 1, 0},
|
||
{0xD3, (uint8_t[]){0x65}, 1, 0},
|
||
{0xD4, (uint8_t[]){0x74}, 1, 0},
|
||
{0xD5, (uint8_t[]){0x88}, 1, 0},
|
||
{0xD6, (uint8_t[]){0x99}, 1, 0},
|
||
{0xD7, (uint8_t[]){0x01}, 1, 0},
|
||
{0xD8, (uint8_t[]){0xBB}, 1, 0},
|
||
{0xD9, (uint8_t[]){0xAA}, 1, 0},
|
||
{0xF3, (uint8_t[]){0x01}, 1, 0},
|
||
{0xF0, (uint8_t[]){0x00}, 1, 0},
|
||
{0x3A, (uint8_t[]){0x55}, 1, 0},
|
||
{0x21, (uint8_t[]){0x00}, 1, 0},
|
||
{0x11, (uint8_t[]){0x00}, 1, 120},
|
||
{0x29, (uint8_t[]){0x00}, 1, 0},
|
||
};
|
||
|
||
void lcd_init(){
|
||
// 标准SPI总线配置（CLK + MOSI，无MISO）
|
||
const spi_bus_config_t buscfg = {
|
||
.sclk_io_num = PIN_LCD_CLK,
|
||
.mosi_io_num = PIN_LCD_MOSI,
|
||
.miso_io_num = -1,
|
||
.quadwp_io_num = -1,
|
||
.quadhd_io_num = -1,
|
||
.max_transfer_sz = LCD_HIGH * 80 * sizeof(uint16_t),
|
||
};
|
||
ESP_ERROR_CHECK(spi_bus_initialize(SPI_LCD_HOST, &buscfg, SPI_DMA_CH_AUTO));
|
||
|
||
// 标准SPI IO配置（带DC引脚）
|
||
esp_lcd_panel_io_spi_config_t io_config = {
|
||
.dc_gpio_num = PIN_LCD_DC,
|
||
.cs_gpio_num = PIN_LCD_CS,
|
||
.pclk_hz = 60 * 1000 * 1000, // C3 SPI最大60MHz
|
||
.lcd_cmd_bits = 8,
|
||
.lcd_param_bits = 8,
|
||
.spi_mode = 0,
|
||
.trans_queue_depth = 10,
|
||
};
|
||
ESP_ERROR_CHECK(esp_lcd_new_panel_io_spi((esp_lcd_spi_bus_handle_t)SPI_LCD_HOST, &io_config, &io_handle));
|
||
|
||
// ST77916面板配置（通过vendor_config注入正确的初始化命令）
|
||
st77916_vendor_config_t vendor_cfg = {
|
||
.init_cmds = lcd_init_cmds,
|
||
.init_cmds_size = sizeof(lcd_init_cmds) / sizeof(lcd_init_cmds[0]),
|
||
};
|
||
const esp_lcd_panel_dev_config_t panel_config = {
|
||
.reset_gpio_num = PIN_LCD_RST,
|
||
.rgb_ele_order = LCD_RGB_ELEMENT_ORDER_RGB,
|
||
.bits_per_pixel = 16,
|
||
.vendor_config = &vendor_cfg,
|
||
};
|
||
ESP_ERROR_CHECK(esp_lcd_new_panel_st77916(io_handle, &panel_config, &panel_handle));
|
||
esp_lcd_panel_reset(panel_handle);
|
||
esp_lcd_panel_init(panel_handle);
|
||
esp_lcd_panel_mirror(panel_handle, false, false); // 与参考项目一致
|
||
|
||
// 清空LCD GRAM，避免显示上次关机时的残留画面
|
||
size_t clear_buffer_size = LCD_WID * 40; // 每次清除40行
|
||
uint16_t *clear_buffer = heap_caps_malloc(clear_buffer_size * sizeof(uint16_t), MALLOC_CAP_DMA);
|
||
if (clear_buffer) {
|
||
memset(clear_buffer, 0, clear_buffer_size * sizeof(uint16_t));
|
||
|
||
for (int y = 0; y < LCD_HIGH; y += 40) {
|
||
int lines = (y + 40 > LCD_HIGH) ? (LCD_HIGH - y) : 40;
|
||
esp_lcd_panel_draw_bitmap(panel_handle, 0, y, LCD_WID, y + lines, clear_buffer);
|
||
}
|
||
|
||
heap_caps_free(clear_buffer);
|
||
ESP_LOGI(LCD_TAG, "LCD GRAM cleared (black filled)");
|
||
} else {
|
||
ESP_LOGE(LCD_TAG, "Failed to allocate clear buffer");
|
||
}
|
||
|
||
// 初始化时不打开显示，等UI渲染完成后由main.c调用lcd_disp_on_off(true)
|
||
esp_lcd_panel_disp_on_off(panel_handle, false);
|
||
}
|
||
|
||
// 初始化触摸控制器
|
||
void touch_init(){
|
||
const esp_lcd_touch_config_t tp_cfg = {
|
||
.x_max = LCD_WID,
|
||
.y_max = LCD_HIGH,
|
||
.rst_gpio_num = PIN_TP_RST,
|
||
.int_gpio_num = PIN_TP_INT,
|
||
.levels = {
|
||
.reset = 0,
|
||
.interrupt = 0,
|
||
},
|
||
.flags = {
|
||
.swap_xy = 0, // managed版CST816S不在驱动内变换，base库会做单次变换
|
||
.mirror_x = 0, // 参考项目本地驱动+base库双重变换=恒等，实际传原始坐标
|
||
.mirror_y = 0, // 所以这里全部设0，直接传原始坐标给LVGL
|
||
},
|
||
};
|
||
// 手动配置I2C IO（不使用宏，因为宏的scl_speed_hz与legacy I2C驱动不兼容）
|
||
const esp_lcd_panel_io_i2c_config_t tp_io_config = {
|
||
.dev_addr = ESP_LCD_TOUCH_IO_I2C_CST816S_ADDRESS,
|
||
.control_phase_bytes = 1,
|
||
.dc_bit_offset = 0,
|
||
.lcd_cmd_bits = 8,
|
||
.lcd_param_bits = 0,
|
||
.flags = {
|
||
.disable_control_phase = 1,
|
||
},
|
||
};
|
||
esp_err_t err = esp_lcd_new_panel_io_i2c((esp_lcd_i2c_bus_handle_t)I2C_MASTER_NUM, &tp_io_config, &tp_io_handle);
|
||
if (err != ESP_OK) {
|
||
ESP_LOGE(LCD_TAG, "Failed to create I2C IO for touch: %s", esp_err_to_name(err));
|
||
return;
|
||
}
|
||
err = esp_lcd_touch_new_i2c_cst816s(tp_io_handle, &tp_cfg, &touch_handle);
|
||
if (err != ESP_OK) {
|
||
ESP_LOGE(LCD_TAG, "Failed to create touch handle: %s", esp_err_to_name(err));
|
||
return;
|
||
}
|
||
ESP_LOGI(LCD_TAG, "Touch controller initialized successfully");
|
||
}
|
||
|
||
// 初始化LVGL显示和触摸
|
||
void lvgl_lcd_init(){
|
||
const lvgl_port_cfg_t lvgl_cfg = {
|
||
.task_priority = 4,
|
||
.task_stack = 8192,
|
||
.task_affinity = -1,
|
||
.task_max_sleep_ms = 500,
|
||
.timer_period_ms = 5
|
||
};
|
||
lvgl_port_init(&lvgl_cfg);
|
||
|
||
#define LVGL_DRAW_BUF_LINES 30
|
||
size_t buffer_size = LCD_WID * LVGL_DRAW_BUF_LINES;
|
||
|
||
ESP_LOGI(LCD_TAG, "LVGL buffer size: %d bytes (W: %d, Lines: %d)",
|
||
buffer_size * 2, LCD_WID, LVGL_DRAW_BUF_LINES);
|
||
|
||
const lvgl_port_display_cfg_t disp_cfg = {
|
||
.io_handle = io_handle,
|
||
.panel_handle = panel_handle,
|
||
.buffer_size = buffer_size,
|
||
.double_buffer = true,
|
||
.hres = LCD_WID,
|
||
.vres = LCD_HIGH,
|
||
.monochrome = false,
|
||
.rotation = {
|
||
.swap_xy = false,
|
||
.mirror_x = false,
|
||
.mirror_y = false,
|
||
},
|
||
.flags = {
|
||
.buff_dma = true,
|
||
}
|
||
};
|
||
disp_handle = lvgl_port_add_disp(&disp_cfg);
|
||
if (touch_handle != NULL) {
|
||
lvgl_port_touch_cfg_t touch_cgf = {
|
||
.disp = disp_handle,
|
||
.handle = touch_handle,
|
||
};
|
||
lvgl_port_add_touch(&touch_cgf);
|
||
ESP_LOGI(LCD_TAG, "Touch controller added to LVGL");
|
||
} else {
|
||
ESP_LOGE(LCD_TAG, "Touch handle is NULL, skipping touch initialization");
|
||
}
|
||
}
|
||
|
||
void get_touch(uint16_t* touchx,uint16_t* touchy){
|
||
if (touch_handle == NULL) {
|
||
ESP_LOGE(LCD_TAG, "Touch handle is NULL, cannot get touch data");
|
||
*touchx = 0;
|
||
*touchy = 0;
|
||
return;
|
||
}
|
||
uint8_t max = 1;
|
||
max = touch_handle->data.points;
|
||
*touchx = touch_handle->data.coords[0].x;
|
||
*touchy = touch_handle->data.coords[0].y;
|
||
printf("%x\n",max);
|
||
}
|
||
|
||
// LCD显示开关封装（供main.c在UI渲染完成后调用）
|
||
void lcd_disp_on_off(bool on_off) {
|
||
if (panel_handle != NULL) {
|
||
esp_lcd_panel_disp_on_off(panel_handle, on_off);
|
||
}
|
||
}
|
||
|
||
// 清空LCD GRAM为黑色（用于低功耗熄屏前，避免残影）
|
||
void lcd_clear_screen_black(void) {
|
||
if (panel_handle == NULL) {
|
||
ESP_LOGE(LCD_TAG, "Panel handle is NULL, cannot clear screen");
|
||
return;
|
||
}
|
||
|
||
size_t clear_buffer_size = LCD_WID * 40;
|
||
uint16_t *clear_buffer = heap_caps_malloc(clear_buffer_size * sizeof(uint16_t), MALLOC_CAP_DMA);
|
||
if (clear_buffer) {
|
||
memset(clear_buffer, 0, clear_buffer_size * sizeof(uint16_t));
|
||
|
||
for (int y = 0; y < LCD_HIGH; y += 40) {
|
||
int lines = (y + 40 > LCD_HIGH) ? (LCD_HIGH - y) : 40;
|
||
esp_lcd_panel_draw_bitmap(panel_handle, 0, y, LCD_WID, y + lines, clear_buffer);
|
||
}
|
||
|
||
heap_caps_free(clear_buffer);
|
||
ESP_LOGI(LCD_TAG, "LCD GRAM cleared to black (for low power mode)");
|
||
} else {
|
||
ESP_LOGE(LCD_TAG, "Failed to allocate clear buffer");
|
||
}
|
||
}
|