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sdcard: Updating sector calculation for SDXC. #1052

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sdcard: Updating sector calculation for SDXC. #1052

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2 changes: 1 addition & 1 deletion micropython/drivers/storage/sdcard/sdcard.py
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Original file line number Diff line number Diff line change
Expand Up @@ -97,7 +97,7 @@ def init_card(self, baudrate):
csd = bytearray(16)
self.readinto(csd)
if csd[0] & 0xC0 == 0x40: # CSD version 2.0
self.sectors = ((csd[8] << 8 | csd[9]) + 1) * 1024
self.sectors = ((csd[7] << 16 | csd[8] << 8 | csd[9]) + 1) * 1024
elif csd[0] & 0xC0 == 0x00: # CSD version 1.0 (old, <=2GB)
c_size = (csd[6] & 0b11) << 10 | csd[7] << 2 | csd[8] >> 6
c_size_mult = (csd[9] & 0b11) << 1 | csd[10] >> 7
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