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首页 » SCM » SD卡驱动 SD_CARD_TIMEOUT 当一个SD卡的操作超出时限,将导致返回错误和该标记被置位 SD_CARD_EXIST 当卡槽内插入了合适...

SD卡驱动 SD_CARD_TIMEOUT 当一个SD卡的操作超出时限,将导致返回错误和该标记被置位 SD_CARD_EXIST 当卡槽内插入了合适...

于 2022-08-25 发布 文件大小:6.73 kB
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SD卡驱动 SD_CARD_TIMEOUT 当一个SD卡的操作超出时限,将导致返回错误和该标记被置位 SD_CARD_EXIST 当卡槽内插入了合适的卡体,不管是什么卡,都会使该位被设置; SD_CARD_WRITE_PROTECT 当卡体的写保护开关被 LOCK 时,则该位被设置; SD_CARD_READY 当卡槽内的卡被正确识别,并可以随时访问时,则该位被设置; SD_CARD_DOOR_CLOSE 当卡槽的门(产品外壳上的挡板开关)关闭时,则该位被设置; SD_CARD_IS_SD 当卡槽内插入的是 SD 卡时,则该位被设置。 SD_CARD_IS_MMC 当卡槽内插入的是 MMC 卡时,则该位被设置; 注意:不要使用 0x80,免得和整数作逻辑运算时被误为负数。-err

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