DCMI裁剪功能CROP

lvehe

	
[mw_shl_code=c,true]void camera_data_crop(uint16_t x0, uint16_t y0, uint16_t width, uint16_t height)
{
	DCMI_CROPInitTypeDef DCMI_CROPInitStruct;
	
	DCMI_CROPInitStruct.DCMI_HorizontalOffsetCount = x0 * 2;
	DCMI_CROPInitStruct.DCMI_CaptureCount = width * 2 - 1;
	DCMI_CROPInitStruct.DCMI_VerticalStartLine = y0;
	DCMI_CROPInitStruct.DCMI_VerticalLineCount = height - 1;
	DCMI_CROPConfig(&DCMI_CROPInitStruct);
	
	DCMI_CROPCmd(ENABLE);
}

void camera_data_show(void)
{
	DCMI_Stop();
	
	OV2640_RGB565Mode(); //摄像头输出必须为非JPEG格式数据
	OV2640_OutSizeSet(320, 240);
	
	DCMI->CR &= ~DCMI_CR_JPEG; //未压缩的视频格式
	DCMI->CR &= ~DCMI_CaptureMode_SnapShot; //连续模式
	DMA2_Stream1->M0AR = (uint32_t)&LCD_RAM;
	DMA2_Stream1->NDTR = 1;
	DMA2_Stream1->CR   = (DMA2_Stream1->CR & 0xFFFF9FFF) | DMA_MemoryDataSize_HalfWord;
	DMA2_Stream1->CR  &= ~DMA_MemoryInc_Enable;
	
	camera_data_crop(80, 60, 160, 120);
	LCD_SetWindow(80, 60, 160, 120);
	LCD_WR_PRE();
	
	DCMI_Start();
}[/mw_shl_code]

以上程序在320x240的LCD中心显示160x120大小的经裁剪的图像。[/mw_shl_code]

龙之谷

谢谢分享~~~~~

正点原子

不错,谢谢分享....

半毛钱

谢谢分享，，，，