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view stm32_eval.h @ 55:b21db2b47a27
Enable DMA mode by initing DMA channel and enabling IRQ handler.
author | Daniel O'Connor <darius@dons.net.au> |
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date | Sun, 07 Apr 2013 22:34:05 +0930 |
parents | 9521be9b391e |
children | f0563086040d |
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/* SDIO Intialization divisor (400KHz max) */ #define SDIO_INIT_CLK_DIV ((uint8_t)0xb2) /* SDIO Data Transfer Frequency (25MHz max) */ #define SDIO_TRANSFER_CLK_DIV ((uint8_t)0x01) #undef SD_HAVE_DETECT /* Going to 4 bit mode gives CRC errors */ #define SD_NO_4BIT #define SD_DMA_MODE ((uint32_t)0x00000000) //#define SD_POLLING_MODE ((uint32_t)0x00000002) /* No idea if this is for all SD cards. The one I have has 1024 byte blocks but 512 byte reads work * Note that SD_ReadBlock forces blocksize to be 512 and divides the address by 512 but only for SDIO_HIGH_CAPACITY_SD_CARD's */ #define SD_BLOCK_SIZE 512 void SD_LowLevel_DeInit(void); void SD_LowLevel_Init(void); void SD_LowLevel_DMA_RxConfig(uint32_t *BufferDST, uint32_t BufferSize); void SD_LowLevel_DMA_TxConfig(uint32_t *BufferSRC, uint32_t BufferSize); uint32_t SD_DMAEndOfTransferStatus(void);