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/AliOS-Things-master/components/py_engine/engine/drivers/sdcard/
A Dsdcard.py97 csd = bytearray(16)
98 self.readinto(csd)
99 if csd[0] & 0xC0 == 0x40: # CSD version 2.0
100 self.sectors = ((csd[8] << 8 | csd[9]) + 1) * 1024
101 elif csd[0] & 0xC0 == 0x00: # CSD version 1.0 (old, <=2GB)
102 c_size = csd[6] & 0b11 | csd[7] << 2 | (csd[8] & 0b11000000) << 4
103 c_size_mult = ((csd[9] & 0b11) << 1) | csd[10] >> 7
/AliOS-Things-master/hardware/chip/rtl872xd/sdk/component/soc/realtek/amebad/fwlib/ram_hp/
A Drtl8721dhp_sd.c493 _memcpy (card_info.csd, pbuf + 1, SDIOH_CSD_LEN); in SD_GetCSD()
496 if(card_info.csd[0] >> 6) { in SD_GetCSD()
497 c_size = (((card_info.csd[7] & 0x3F) << 16) | (card_info.csd[8] << 8) | (card_info.csd[9]))+1; in SD_GetCSD()
504 …c_size = (((card_info.csd[6] & 0x3) << 10) | (card_info.csd[7] << 2) | (card_info.csd[8] >> 6)) + … in SD_GetCSD()
505 n = ((((card_info.csd[9] & 0x3) << 1) |(card_info.csd[10] >> 7))+2) + (card_info.csd[5] & 0xF); in SD_GetCSD()
514 card_info.read_bl_len = 1 << (card_info.csd[5] & 0xF); in SD_GetCSD()
515 card_info.write_bl_len = 1 << (((card_info.csd[12] & 0x3) << 2) | (card_info.csd[13] >> 6)); in SD_GetCSD()
/AliOS-Things-master/hardware/chip/rtl872xd/sdk/component/soc/realtek/amebad/fwlib/include/
A Drtl8721dhp_sd.h197 u8 csd[SDIOH_CSD_LEN]; /*!< Store the card-specific data(CSD) of the current SD card. */ member

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