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TMS320VC5509A: 利用MMC模块读写SD卡,只有小容量SD卡可以通过测试

Part Number: TMS320VC5509A


我使用TI官方例程mmc_sd_setup测试发现小容量(2G)的SD卡可以通过测试,但大容量(32G)的SD卡换了好几块也始终不行,请问可能是什么原因呢?