Rdzleo
0bdf7be875
应援灯颜色切换从 LVGL 渲染改为直接 DMA 填充 GRAM，彻底消除 LVGL 刷新竞争： lcd.c/lcd.h: - 新增 lcd_fill_color_with_buf() 直接 DMA 分条填充全屏纯色 - 新增 TEON(0x35) 启用 TE 内部同步信号 - 新增 lcd_read_scanline()/lcd_wait_vsync_timeout() VSYNC 读取接口 （实测 QSPI 模式下 TESLRD 始终返回 0xFFFF，软件 VSYNC 不可用） ui_ScreenSet.c: - LVGL flush 回调拦截：进入应援灯时替换为空操作，退出时恢复 解决 LVGL 周期刷新覆盖 DMA 颜色导致红色方块残留的问题 - DMA 缓冲区生命周期管理：进入时分配，退出时释放 - 颜色切换 PWM=0 黑屏遮蔽：DMA 期间完全熄灭背光，撕裂不可见 - 滑块交互优化：拖动期间锁定其他按钮 + PWM 50ms 节流 - 手动滑动检测替代 LVGL 手势（layer_top 上手势不可靠） .gitignore: 排除 docs/*.pdf 文档文件 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
456 lines
16 KiB
C
456 lines
16 KiB
C
#include "dzbj_gpio.h"
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#include "esp_lvgl_port.h"
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#include "esp_lcd_st77916.h"
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#include "esp_err.h"
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#include "esp_log.h"
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#include "lcd.h"
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#if DZBJ_ENABLE_TOUCH
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#include "esp_lcd_touch_cst816s.h"
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#endif
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#include <string.h>
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#include "esp_heap_caps.h"
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// ST77916 初始化命令（从 dzbj 项目已验证的驱动版本提取）
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// 主项目 managed_component 新版默认命令与本硬件面板不匹配，需手动注入
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static const st77916_lcd_init_cmd_t lcd_init_cmds[] = {
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{0xF0, (uint8_t[]){0x28}, 1, 0},
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{0xF2, (uint8_t[]){0x28}, 1, 0},
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{0x73, (uint8_t[]){0xF0}, 1, 0},
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{0x7C, (uint8_t[]){0xD1}, 1, 0},
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{0x83, (uint8_t[]){0xE0}, 1, 0},
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{0x84, (uint8_t[]){0x61}, 1, 0},
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{0xF2, (uint8_t[]){0x82}, 1, 0},
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{0xF0, (uint8_t[]){0x00}, 1, 0},
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{0xF0, (uint8_t[]){0x01}, 1, 0},
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{0xF1, (uint8_t[]){0x01}, 1, 0},
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{0xB0, (uint8_t[]){0x5E}, 1, 0},
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{0xB1, (uint8_t[]){0x55}, 1, 0},
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{0xB2, (uint8_t[]){0x24}, 1, 0},
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{0xB3, (uint8_t[]){0x01}, 1, 0},
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{0xB4, (uint8_t[]){0x87}, 1, 0},
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{0xB5, (uint8_t[]){0x44}, 1, 0},
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{0xB6, (uint8_t[]){0x8B}, 1, 0},
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{0xB7, (uint8_t[]){0x40}, 1, 0},
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{0xB8, (uint8_t[]){0x86}, 1, 0},
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{0xB9, (uint8_t[]){0x15}, 1, 0},
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{0xBA, (uint8_t[]){0x00}, 1, 0},
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{0xBB, (uint8_t[]){0x08}, 1, 0},
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{0xBC, (uint8_t[]){0x08}, 1, 0},
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{0xBD, (uint8_t[]){0x00}, 1, 0},
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{0xBE, (uint8_t[]){0x00}, 1, 0},
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{0xBF, (uint8_t[]){0x07}, 1, 0},
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{0xC0, (uint8_t[]){0x80}, 1, 0},
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{0xC1, (uint8_t[]){0x10}, 1, 0},
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{0xC2, (uint8_t[]){0x37}, 1, 0},
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{0xC3, (uint8_t[]){0x80}, 1, 0},
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{0xC4, (uint8_t[]){0x10}, 1, 0},
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{0xC5, (uint8_t[]){0x37}, 1, 0},
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{0xC6, (uint8_t[]){0xA9}, 1, 0},
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{0xC7, (uint8_t[]){0x41}, 1, 0},
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{0xC8, (uint8_t[]){0x01}, 1, 0},
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{0xC9, (uint8_t[]){0xA9}, 1, 0},
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{0xCA, (uint8_t[]){0x41}, 1, 0},
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{0xCB, (uint8_t[]){0x01}, 1, 0},
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{0xCC, (uint8_t[]){0x7F}, 1, 0},
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{0xCD, (uint8_t[]){0x7F}, 1, 0},
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{0xCE, (uint8_t[]){0xFF}, 1, 0},
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{0xD0, (uint8_t[]){0x91}, 1, 0},
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{0xD1, (uint8_t[]){0x68}, 1, 0},
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{0xD2, (uint8_t[]){0x68}, 1, 0},
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{0xF5, (uint8_t[]){0x00, 0xA5}, 2, 0},
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{0xDD, (uint8_t[]){0x40}, 1, 0},
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{0xDE, (uint8_t[]){0x40}, 1, 0},
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{0xF1, (uint8_t[]){0x10}, 1, 0},
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{0xF0, (uint8_t[]){0x00}, 1, 0},
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{0xF0, (uint8_t[]){0x02}, 1, 0},
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{0xE0, (uint8_t[]){0xF0, 0x10, 0x18, 0x0D, 0x0C, 0x38, 0x3E, 0x44, 0x51, 0x39, 0x15, 0x15, 0x30, 0x34}, 14, 0},
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{0xE1, (uint8_t[]){0xF0, 0x0F, 0x17, 0x0D, 0x0B, 0x07, 0x3E, 0x33, 0x51, 0x39, 0x15, 0x15, 0x30, 0x34}, 14, 0},
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{0xF0, (uint8_t[]){0x10}, 1, 0},
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{0xF3, (uint8_t[]){0x10}, 1, 0},
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{0xE0, (uint8_t[]){0x08}, 1, 0},
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{0xE1, (uint8_t[]){0x00}, 1, 0},
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{0xE2, (uint8_t[]){0x00}, 1, 0},
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{0xE3, (uint8_t[]){0x00}, 1, 0},
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{0xE4, (uint8_t[]){0xE0}, 1, 0},
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{0xE5, (uint8_t[]){0x06}, 1, 0},
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{0xE6, (uint8_t[]){0x21}, 1, 0},
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{0xE7, (uint8_t[]){0x03}, 1, 0},
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{0xE8, (uint8_t[]){0x05}, 1, 0},
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{0xE9, (uint8_t[]){0x02}, 1, 0},
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{0xEA, (uint8_t[]){0xE9}, 1, 0},
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{0xEB, (uint8_t[]){0x00}, 1, 0},
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{0xEC, (uint8_t[]){0x00}, 1, 0},
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{0xED, (uint8_t[]){0x14}, 1, 0},
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{0xEE, (uint8_t[]){0xFF}, 1, 0},
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{0xEF, (uint8_t[]){0x00}, 1, 0},
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{0xF8, (uint8_t[]){0xFF}, 1, 0},
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{0xF9, (uint8_t[]){0x00}, 1, 0},
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{0xFA, (uint8_t[]){0x00}, 1, 0},
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{0xFB, (uint8_t[]){0x30}, 1, 0},
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{0xFC, (uint8_t[]){0x00}, 1, 0},
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{0xFD, (uint8_t[]){0x00}, 1, 0},
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{0xFE, (uint8_t[]){0x00}, 1, 0},
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{0xFF, (uint8_t[]){0x00}, 1, 0},
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{0x60, (uint8_t[]){0x40}, 1, 0},
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{0x61, (uint8_t[]){0x05}, 1, 0},
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{0x62, (uint8_t[]){0x00}, 1, 0},
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{0x63, (uint8_t[]){0x42}, 1, 0},
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{0x64, (uint8_t[]){0xDA}, 1, 0},
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{0x65, (uint8_t[]){0x00}, 1, 0},
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{0x66, (uint8_t[]){0x00}, 1, 0},
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{0x67, (uint8_t[]){0x00}, 1, 0},
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{0x68, (uint8_t[]){0x00}, 1, 0},
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{0x69, (uint8_t[]){0x00}, 1, 0},
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{0x6A, (uint8_t[]){0x00}, 1, 0},
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{0x6B, (uint8_t[]){0x00}, 1, 0},
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{0x70, (uint8_t[]){0x40}, 1, 0},
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{0x71, (uint8_t[]){0x04}, 1, 0},
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{0x72, (uint8_t[]){0x00}, 1, 0},
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{0x73, (uint8_t[]){0x42}, 1, 0},
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{0x74, (uint8_t[]){0xD9}, 1, 0},
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{0x75, (uint8_t[]){0x00}, 1, 0},
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{0x76, (uint8_t[]){0x00}, 1, 0},
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{0x77, (uint8_t[]){0x00}, 1, 0},
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{0x78, (uint8_t[]){0x00}, 1, 0},
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{0x79, (uint8_t[]){0x00}, 1, 0},
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{0x7A, (uint8_t[]){0x00}, 1, 0},
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{0x7B, (uint8_t[]){0x00}, 1, 0},
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{0x80, (uint8_t[]){0x48}, 1, 0},
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{0x81, (uint8_t[]){0x00}, 1, 0},
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{0x82, (uint8_t[]){0x07}, 1, 0},
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{0x83, (uint8_t[]){0x02}, 1, 0},
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{0x84, (uint8_t[]){0xD7}, 1, 0},
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{0x85, (uint8_t[]){0x04}, 1, 0},
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{0x86, (uint8_t[]){0x00}, 1, 0},
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{0x87, (uint8_t[]){0x00}, 1, 0},
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{0x88, (uint8_t[]){0x48}, 1, 0},
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{0x89, (uint8_t[]){0x00}, 1, 0},
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{0x8A, (uint8_t[]){0x09}, 1, 0},
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{0x8B, (uint8_t[]){0x02}, 1, 0},
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{0x8C, (uint8_t[]){0xD9}, 1, 0},
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{0x8D, (uint8_t[]){0x04}, 1, 0},
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{0x8E, (uint8_t[]){0x00}, 1, 0},
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{0x8F, (uint8_t[]){0x00}, 1, 0},
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{0x90, (uint8_t[]){0x48}, 1, 0},
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{0x91, (uint8_t[]){0x00}, 1, 0},
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{0x92, (uint8_t[]){0x0B}, 1, 0},
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{0x93, (uint8_t[]){0x02}, 1, 0},
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{0x94, (uint8_t[]){0xDB}, 1, 0},
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{0x95, (uint8_t[]){0x04}, 1, 0},
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{0x96, (uint8_t[]){0x00}, 1, 0},
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{0x97, (uint8_t[]){0x00}, 1, 0},
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{0x98, (uint8_t[]){0x48}, 1, 0},
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{0x99, (uint8_t[]){0x00}, 1, 0},
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{0x9A, (uint8_t[]){0x0D}, 1, 0},
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{0x9B, (uint8_t[]){0x02}, 1, 0},
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{0x9C, (uint8_t[]){0xDD}, 1, 0},
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{0x9D, (uint8_t[]){0x04}, 1, 0},
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{0x9E, (uint8_t[]){0x00}, 1, 0},
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{0x9F, (uint8_t[]){0x00}, 1, 0},
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{0xA0, (uint8_t[]){0x48}, 1, 0},
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{0xA1, (uint8_t[]){0x00}, 1, 0},
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{0xA2, (uint8_t[]){0x06}, 1, 0},
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{0xA3, (uint8_t[]){0x02}, 1, 0},
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{0xA4, (uint8_t[]){0xD6}, 1, 0},
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{0xA5, (uint8_t[]){0x04}, 1, 0},
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{0xA6, (uint8_t[]){0x00}, 1, 0},
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{0xA7, (uint8_t[]){0x00}, 1, 0},
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{0xA8, (uint8_t[]){0x48}, 1, 0},
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{0xA9, (uint8_t[]){0x00}, 1, 0},
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{0xAA, (uint8_t[]){0x08}, 1, 0},
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{0xAB, (uint8_t[]){0x02}, 1, 0},
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{0xAC, (uint8_t[]){0xD8}, 1, 0},
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{0xAD, (uint8_t[]){0x04}, 1, 0},
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{0xAE, (uint8_t[]){0x00}, 1, 0},
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{0xAF, (uint8_t[]){0x00}, 1, 0},
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{0xB0, (uint8_t[]){0x48}, 1, 0},
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{0xB1, (uint8_t[]){0x00}, 1, 0},
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{0xB2, (uint8_t[]){0x0A}, 1, 0},
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{0xB3, (uint8_t[]){0x02}, 1, 0},
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{0xB4, (uint8_t[]){0xDA}, 1, 0},
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{0xB5, (uint8_t[]){0x04}, 1, 0},
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{0xB6, (uint8_t[]){0x00}, 1, 0},
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{0xB7, (uint8_t[]){0x00}, 1, 0},
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{0xB8, (uint8_t[]){0x48}, 1, 0},
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{0xB9, (uint8_t[]){0x00}, 1, 0},
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{0xBA, (uint8_t[]){0x0C}, 1, 0},
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{0xBB, (uint8_t[]){0x02}, 1, 0},
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{0xBC, (uint8_t[]){0xDC}, 1, 0},
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{0xBD, (uint8_t[]){0x04}, 1, 0},
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{0xBE, (uint8_t[]){0x00}, 1, 0},
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{0xBF, (uint8_t[]){0x00}, 1, 0},
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{0xC0, (uint8_t[]){0x10}, 1, 0},
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{0xC1, (uint8_t[]){0x47}, 1, 0},
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{0xC2, (uint8_t[]){0x56}, 1, 0},
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{0xC3, (uint8_t[]){0x65}, 1, 0},
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{0xC4, (uint8_t[]){0x74}, 1, 0},
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{0xC5, (uint8_t[]){0x88}, 1, 0},
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{0xC6, (uint8_t[]){0x99}, 1, 0},
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{0xC7, (uint8_t[]){0x01}, 1, 0},
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{0xC8, (uint8_t[]){0xBB}, 1, 0},
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{0xC9, (uint8_t[]){0xAA}, 1, 0},
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{0xD0, (uint8_t[]){0x10}, 1, 0},
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{0xD1, (uint8_t[]){0x47}, 1, 0},
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{0xD2, (uint8_t[]){0x56}, 1, 0},
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{0xD3, (uint8_t[]){0x65}, 1, 0},
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{0xD4, (uint8_t[]){0x74}, 1, 0},
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{0xD5, (uint8_t[]){0x88}, 1, 0},
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{0xD6, (uint8_t[]){0x99}, 1, 0},
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{0xD7, (uint8_t[]){0x01}, 1, 0},
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{0xD8, (uint8_t[]){0xBB}, 1, 0},
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{0xD9, (uint8_t[]){0xAA}, 1, 0},
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{0xF3, (uint8_t[]){0x01}, 1, 0},
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{0xF0, (uint8_t[]){0x00}, 1, 0},
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{0x3A, (uint8_t[]){0x55}, 1, 0},
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{0x21, (uint8_t[]){0x00}, 1, 0},
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{0x11, (uint8_t[]){0x00}, 1, 120},
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{0x29, (uint8_t[]){0x00}, 1, 0},
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};
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static lv_disp_t * disp_handle = NULL;
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static esp_lcd_panel_handle_t panel_handle = NULL;
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static esp_lcd_panel_io_handle_t io_handle = NULL;
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#if DZBJ_ENABLE_TOUCH
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static esp_lcd_touch_handle_t touch_handle = NULL;
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static esp_lcd_panel_io_handle_t tp_io_handle = NULL;
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// 外部传入的 I2C 总线句柄（与主项目共享）
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static i2c_master_bus_handle_t ext_i2c_bus = NULL;
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#endif
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void lcd_set_i2c_bus(i2c_master_bus_handle_t bus) {
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#if DZBJ_ENABLE_TOUCH
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ext_i2c_bus = bus;
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#else
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(void)bus;
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#endif
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}
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void lcd_init(){
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const spi_bus_config_t buscfg = ST77916_PANEL_BUS_QSPI_CONFIG(PIN_LCD_CLK,
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PIN_LCD_D0,
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PIN_LCD_D1,
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PIN_LCD_D2,
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PIN_LCD_D3,
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LCD_HIGH * 80 * sizeof(uint16_t));
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spi_bus_initialize(SPI_LCD_HOST, &buscfg, SPI_DMA_CH_AUTO);
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// QSPI 80MHz
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esp_lcd_panel_io_spi_config_t io_config = ST77916_PANEL_IO_QSPI_CONFIG(PIN_LCD_CS, NULL, NULL);
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io_config.pclk_hz = 80 * 1000 * 1000;
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ESP_ERROR_CHECK(esp_lcd_new_panel_io_spi((esp_lcd_spi_bus_handle_t)SPI_LCD_HOST, &io_config, &io_handle));
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const st77916_vendor_config_t vendor_config = {
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.init_cmds = lcd_init_cmds,
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.init_cmds_size = sizeof(lcd_init_cmds) / sizeof(st77916_lcd_init_cmd_t),
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.flags = {
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.use_qspi_interface = 1,
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},
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};
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const esp_lcd_panel_dev_config_t panel_config = {
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.reset_gpio_num = PIN_LCD_RST,
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.rgb_ele_order = LCD_RGB_ELEMENT_ORDER_RGB,
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.bits_per_pixel = 16,
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.vendor_config = &vendor_config,
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};
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ESP_ERROR_CHECK(esp_lcd_new_panel_st77916(io_handle, &panel_config, &panel_handle));
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esp_lcd_panel_reset(panel_handle);
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esp_lcd_panel_init(panel_handle);
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// 启用 TE 内部同步信号（TEON 0x35, 参数 0x00 = V-Blank only）
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// 即使 TE 引脚未接 MCU，启用后可通过 TESLRD(0x45) 读取扫描行位置
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uint8_t te_param = 0x00;
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esp_lcd_panel_io_tx_param(io_handle, 0x35, &te_param, 1);
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ESP_LOGI(LCD_TAG, "TEON enabled (V-Blank mode)");
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// 清空LCD GRAM，避免显示上次关机时的残留画面
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size_t clear_buffer_size = LCD_WID * 40;
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uint16_t *clear_buffer = heap_caps_malloc(clear_buffer_size * sizeof(uint16_t), MALLOC_CAP_DMA);
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if (clear_buffer) {
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memset(clear_buffer, 0, clear_buffer_size * sizeof(uint16_t));
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for (int y = 0; y < LCD_HIGH; y += 40) {
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int lines = (y + 40 > LCD_HIGH) ? (LCD_HIGH - y) : 40;
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esp_lcd_panel_draw_bitmap(panel_handle, 0, y, LCD_WID, y + lines, clear_buffer);
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}
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heap_caps_free(clear_buffer);
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ESP_LOGI(LCD_TAG, "LCD GRAM cleared (black filled)");
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} else {
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ESP_LOGE(LCD_TAG, "Failed to allocate clear buffer");
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}
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esp_lcd_panel_disp_on_off(panel_handle, true);
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}
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#if DZBJ_ENABLE_TOUCH
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// 初始化触摸控制器（使用外部传入的 I2C 总线）
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void touch_init(){
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const esp_lcd_touch_config_t tp_cfg = {
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.x_max = LCD_WID,
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.y_max = LCD_HIGH,
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.rst_gpio_num = PIN_TP_RST,
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.int_gpio_num = PIN_TP_INT,
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.levels = {
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.reset = 0,
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.interrupt = 0,
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||
},
|
||
.flags = {
|
||
.swap_xy = false,
|
||
.mirror_x = false,
|
||
.mirror_y = false,
|
||
},
|
||
};
|
||
const esp_lcd_panel_io_i2c_config_t tp_io_config = ESP_LCD_TOUCH_IO_I2C_CST816S_CONFIG();
|
||
|
||
// 使用外部传入的 I2C 总线句柄（与音频编解码器共享 I2C_NUM_1）
|
||
i2c_master_bus_handle_t i2c_bus = ext_i2c_bus;
|
||
if (i2c_bus == NULL) {
|
||
ESP_LOGE(LCD_TAG, "I2C bus not set, call lcd_set_i2c_bus() first");
|
||
return;
|
||
}
|
||
|
||
// 直接传入 i2c_master_bus_handle_t，_Generic 宏分派到 V2（新驱动）
|
||
// 不要强转为 esp_lcd_i2c_bus_handle_t(uint32_t)，否则会触发 V1 legacy 驱动冲突
|
||
esp_err_t err = esp_lcd_new_panel_io_i2c(i2c_bus, &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");
|
||
}
|
||
#endif // DZBJ_ENABLE_TOUCH
|
||
|
||
// 初始化LVGL显示
|
||
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);
|
||
|
||
// 使用内部 DMA 内存，20 行单缓冲（360×20×2 = 14400 字节）
|
||
// PSRAM 缓冲区与 SPI DMA 不兼容（spi transmit queue 失败）
|
||
// 单缓冲 + 小行数，节省内部 SRAM 给 WiFi/BLE
|
||
#define LVGL_DRAW_BUF_LINES 20
|
||
size_t buffer_size = LCD_WID * LVGL_DRAW_BUF_LINES;
|
||
|
||
ESP_LOGI(LCD_TAG, "LVGL buffer: %d bytes (W:%d, Lines:%d, DMA, single)",
|
||
buffer_size * sizeof(uint16_t), 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 = false,
|
||
.hres = LCD_WID,
|
||
.vres = LCD_HIGH,
|
||
.monochrome = false,
|
||
.rotation = {
|
||
.swap_xy = false,
|
||
.mirror_x = false,
|
||
.mirror_y = false,
|
||
},
|
||
.flags = {
|
||
.buff_dma = true,
|
||
.buff_spiram = false,
|
||
}
|
||
};
|
||
disp_handle = lvgl_port_add_disp(&disp_cfg);
|
||
|
||
#if DZBJ_ENABLE_TOUCH
|
||
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");
|
||
}
|
||
#endif
|
||
}
|
||
|
||
#if DZBJ_ENABLE_TOUCH
|
||
void get_touch(uint16_t* touchx, uint16_t* touchy){
|
||
if (touch_handle == NULL) {
|
||
*touchx = 0;
|
||
*touchy = 0;
|
||
return;
|
||
}
|
||
*touchx = touch_handle->data.coords[0].x;
|
||
*touchy = touch_handle->data.coords[0].y;
|
||
}
|
||
#endif // DZBJ_ENABLE_TOUCH
|
||
|
||
// 直接 DMA 填充全屏纯色（绕过 LVGL，使用调用者预分配的缓冲区）
|
||
void lcd_fill_color_with_buf(uint16_t *buf, int strip_h) {
|
||
if (panel_handle == NULL || buf == NULL || strip_h <= 0) return;
|
||
|
||
for (int y = 0; y < LCD_HIGH; y += strip_h) {
|
||
int lines = (y + strip_h > LCD_HIGH) ? (LCD_HIGH - y) : strip_h;
|
||
esp_lcd_panel_draw_bitmap(panel_handle, 0, y, LCD_WID, y + lines, buf);
|
||
}
|
||
}
|
||
|
||
// 读取当前扫描行号（TESLRD 0x45）
|
||
// 返回 ESP_OK 表示读取成功，scanline 存储扫描行号 N[11:0]
|
||
// 扫描行范围：0 ~ (VSYNC+VBP+VACT+VFP-1)，其中 0~359 为活跃显示区
|
||
esp_err_t lcd_read_scanline(uint16_t *scanline) {
|
||
if (!io_handle || !scanline) return ESP_ERR_INVALID_ARG;
|
||
|
||
uint8_t data[2] = {0};
|
||
esp_err_t ret = esp_lcd_panel_io_rx_param(io_handle, 0x45, data, 2);
|
||
if (ret == ESP_OK) {
|
||
// N[11:8] 在 data[0] 低4位，N[7:0] 在 data[1]
|
||
*scanline = ((uint16_t)(data[0] & 0x0F) << 8) | data[1];
|
||
}
|
||
return ret;
|
||
}
|
||
|
||
// 等待 VBLANK 消隐期（带超时保护）
|
||
// 轮询扫描行号，当 scanline >= LCD_HIGH(360) 时表示进入消隐区
|
||
// timeout_us: 最大等待时间（微秒），建议 17000（约1帧）
|
||
// 返回 true = 成功等到 VBLANK，false = 超时或读取失败
|
||
bool lcd_wait_vsync_timeout(uint32_t timeout_us) {
|
||
uint16_t scanline = 0;
|
||
int64_t start = esp_timer_get_time();
|
||
|
||
do {
|
||
if (lcd_read_scanline(&scanline) != ESP_OK) {
|
||
return false;
|
||
}
|
||
if (scanline >= LCD_HIGH) {
|
||
return true;
|
||
}
|
||
esp_rom_delay_us(50);
|
||
} while ((esp_timer_get_time() - start) < (int64_t)timeout_us);
|
||
|
||
return false;
|
||
}
|
||
|
||
// 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");
|
||
}
|
||
}
|