Some microSD card need mount twice to work
Posted: Wed Apr 28, 2021 3:31 am
I have try to mount microSD card via SPI in pyboard. Some microSD card works, but some microSD card will cause timeout error.
But if try to mount it again, it will works. Just increase _CMD_TIMEOUT value does not solve the problem.
Code: Select all
>>> sd=sdcard.SDCard(SPI, PIN_CS)
>>> os.mount(sd, '/SD')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "sdcard.py", line 239, in readblocks
File "sdcard.py", line 181, in readinto
OSError: timeout waiting for response
Code: Select all
>>> sd=sdcard.SDCard(SPI, PIN_CS)
>>> os.mount(sd, '/SD')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "sdcard.py", line 239, in readblocks
File "sdcard.py", line 181, in readinto
OSError: timeout waiting for response
>>> os.mount(sd, '/SD')
>>> os.listdir('/SD')
['demo.py']
>>> os.statvfs('/SD')
(32768, 32768, 491264, 491262, 491262, 0, 0, 0, 0, 255)