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更新LCD刷新模式

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不吃油炸鸡
2026-02-04 10:25:04 +08:00
parent 605ff6fb5e
commit dc96e6353f
5 changed files with 96 additions and 27 deletions
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52
Power_Pico/BSP/LCD/lcd.c
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@@ -15,7 +15,7 @@ extern osSemaphoreId_t DMA_SemaphoreHandle;
void LCD_Fill(u16 xsta,u16 ysta,u16 xend,u16 yend,u16 color)
{
u16 i,j;
LCD_Address_Set(xsta+OFFSET_X, ysta+OFFSET_Y,xend-1+OFFSET_X, yend-1+OFFSET_Y);//设置显示范围
LCD_Address_Set(xsta, ysta,xend-1, yend-1);//设置显示范围
for(i=ysta;i<yend;i++)
{
for(j=xsta;j<xend;j++)
@@ -32,23 +32,49 @@ void LCD_Fill(u16 xsta,u16 ysta,u16 xend,u16 yend,u16 color)
color pixel map
返回值： 无
******************************************************************************/
void LCD_Color_Render(u16 xsta,u16 ysta,u16 xend,u16 yend,u16 *color_p)
void LCD_Color_Render_Async(u16 xsta, u16 ysta, u16 xend, u16 yend, u16 *color_p)
{
u16 i,j,width,height;
width = xend-xsta+1;
height = yend-ysta+1;
uint32_t size = width * height;
// 1. 设置地址 (命令是 8 位的，此时 SPI 必须是 8 位模式)
LCD_Address_Set(xsta, ysta, xend, yend);
// 计算总数据量
uint32_t count = (xend - xsta + 1) * (yend - ysta + 1);
// 2. 安全切换到 16-bit 模式
// 必须先关 SPI，改寄存器，再开 SPI
__HAL_SPI_DISABLE(&hspi2);
hspi2.Instance->CR1 |= SPI_CR1_DFF; // 置位 DFF，启用 16 位数据帧
__HAL_SPI_ENABLE(&hspi2);
// 3. 启动 DMA 传输
HAL_SPI_Transmit_DMA(&hspi2, (uint8_t*)color_p, count);
}
LCD_Address_Set(xsta+OFFSET_X, ysta+OFFSET_Y, xend+OFFSET_X, yend+OFFSET_Y);
static void *lcd_ready_cb = NULL;
hspi2.Init.DataSize = SPI_DATASIZE_16BIT;
hspi2.Instance->CR1|=SPI_CR1_DFF;
HAL_SPI_Transmit_DMA(&hspi2,(uint8_t*)color_p,size);
while(__HAL_DMA_GET_COUNTER(&hdma_spi2_tx)!=0);
// 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;
}
hspi2.Init.DataSize = SPI_DATASIZE_8BIT;
hspi2.Instance->CR1&=~SPI_CR1_DFF;
// DMA 传输完成中断回调
void HAL_SPI_TxCpltCallback(SPI_HandleTypeDef *hspi)
{
if (hspi->Instance == SPI2)
{
// 1. 死等 SPI 总线发完最后 1 bit
while (hspi->Instance->SR & SPI_FLAG_BSY);
// 2. 安全切回 8-bit 模式 (为下一次发送命令做准备)
__HAL_SPI_DISABLE(hspi);
hspi->Instance->CR1 &= ~SPI_CR1_DFF; // 清除 DFF，回退到 8 位
__HAL_SPI_ENABLE(hspi);
// 3. 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();
}
}
}
/******************************************************************************