diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/sdcard/sdcard.py | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/sdcard/sdcard.py b/drivers/sdcard/sdcard.py index ffc551d9a..fc6787556 100644 --- a/drivers/sdcard/sdcard.py +++ b/drivers/sdcard/sdcard.py @@ -172,10 +172,13 @@ class SDCard: self.cs(0) # read until start byte (0xff) - while True: + for i in range(_CMD_TIMEOUT): self.spi.readinto(self.tokenbuf, 0xff) if self.tokenbuf[0] == _TOKEN_DATA: break + else: + self.cs(1) + raise OSError("timeout waiting for response") # read data mv = self.dummybuf_memoryview |