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C6748, EMMC 如何进入Sleep模式

大家好, 

我使用镁光的EMMC, 支持Sleep mode, 然后我用命令将emmc设置为sleep模式之后, 从电流计上未发现功耗降低, 而且随后awake也未有效, 导致emmc无法访问. 请问大家有什么需要注意的, 下面代码有什么错误吗?

进入Sleep Mode

SYS_SDMMC_sendCmd(hSDMMCMemInfo->hSDMMCInfo, (SDMMC_CMD5 | SDMMC_RSP1B), (hSDMMCMemInfo->relCardAddress << 16) | 0x8000 , 0xFFFF);

退出Sleep Mode

SYS_SDMMC_sendCmd(hSDMMCMemInfo->hSDMMCInfo, (SDMMC_CMD5 | SDMMC_RSP1B), (hSDMMCMemInfo->relCardAddress << 16) | 0x0 , 0xFFFF);