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取消DMA传输中断中，LVGL刷新完成的置位。直接改为LVGL线程中等待刷新完成。

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不吃油炸鸡
2026-03-25 15:59:11 +08:00
parent baf4fee442
commit 6a511f63c6
2 changed files with 7 additions and 42 deletions
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32
software/Power_Pico/BSP/LCD/lcd.c
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@@ -50,35 +50,11 @@ void LCD_Color_Render_Async(u16 xsta, u16 ysta, u16 xend, u16 yend, u16 *color_p
LCD_Address_Set(xsta, ysta, xend, yend);
// 计算像素总数
uint32_t pixel_count = (xend - xsta + 1) * (yend - ysta + 1);
// 发送给 DMA 前，利用 CPU 极速翻转内存数组的高低字节！
// 发送前，利用 CPU 翻转内存数组的高低字节
swap_rgb565_buffer_fast(color_p, pixel_count);
// 启动 DMA 传输
// 注意：因为现在是纯 8-bit 发送，1 个像素(16位)要发 2 个字节，所以 count = pixel_count * 2
HAL_SPI_Transmit_DMA(&hspi2, (uint8_t*)color_p, pixel_count * 2);
}
static void *lcd_ready_cb = NULL;
// 设置通知的回调函数
void LCD_Set_Flush_Complete_Callback(void *cb)
{
// 保存回调指针
lcd_ready_cb = cb;
}
// DMA 传输完成中断回调
void HAL_SPI_TxCpltCallback(SPI_HandleTypeDef *hspi)
{
if (hspi->Instance == SPI2)
{
// 确保最后一位数据离开 STM32 的移位寄存器
while (hspi->Instance->SR & SPI_FLAG_BSY);
// 通知 LVGL 渲染结束，执行回调函数
if (lcd_ready_cb) {
LCD_CallbackFunc_t func = (LCD_CallbackFunc_t)lcd_ready_cb;
func();
}
}
// 注意：因为是 8-bit 发送，1 个像素(16位)要发 2 个字节
HAL_SPI_Transmit_DMA(&hspi2, (uint8_t*)color_p, pixel_count * 2);
while(__HAL_DMA_GET_COUNTER(&hdma_spi2_tx)!=0);
}
/******************************************************************************