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How to get and store image from camera to sd card.

Question asked by dang_son.hai on Jun 15, 2012
Latest reply on Jun 18, 2012 by alokm
Hi everyone.
Now I'm playing with DCMI module, with stm32220g-eval board.
The demo code of ST using DMA to get data and send direct to LCD.
I want to get data of 1 frame, and store to sd card.
But I'm not clear about DMA process, in demo code, the configuration is:
  DMA_InitStructure.DMA_Channel = DMA_Channel_1;  
  DMA_InitStructure.DMA_PeripheralBaseAddr = DCMI_DR_ADDRESS;     
  DMA_InitStructure.DMA_Memory0BaseAddr = FSMC_LCD_ADDRESS;
  DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
  DMA_InitStructure.DMA_BufferSize = 1;
  DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
  DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
  DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Word;
  DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
  DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
  DMA_InitStructure.DMA_Priority = DMA_Priority_High;
  DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Enable;
  DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_Full;
  DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
  DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
Why buffersize=1? How many byte of 1 frame?
Do you have any idea?
Thanks and best regards.