kopia lustrzana https://github.com/peterhinch/micropython_eeprom
72 wiersze
2.2 KiB
Python
72 wiersze
2.2 KiB
Python
# eep_test.py MicroPython driver for Microchip EEPROM devices.
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# Released under the MIT License (MIT). See LICENSE.
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# Copyright (c) 2019 Peter Hinch
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import uos
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from machine import I2C, Pin
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from eeprom import EEPROM, T24C512
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# Return an EEPROM array. Adapt for platforms other than Pyboard or chips
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# smaller than 64KiB.
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def get_eep():
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if uos.uname().machine.split(' ')[0][:4] == 'PYBD':
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Pin.board.EN_3V3.value(1)
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eep = EEPROM(I2C(2), T24C512)
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print('Instantiated EEPROM')
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return eep
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# Dumb file copy utility to help with managing EEPROM contents at the REPL.
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def cp(source, dest):
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if dest.endswith('/'): # minimal way to allow
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dest = ''.join((dest, source.split('/')[-1])) # cp /sd/file /eeprom/
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with open(source, 'rb') as infile: # Caller should handle any OSError
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with open(dest,'wb') as outfile: # e.g file not found
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while True:
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buf = infile.read(100)
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outfile.write(buf)
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if len(buf) < 100:
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break
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def test():
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eep = get_eep()
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sa = 1000
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for v in range(256):
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eep[sa + v] = v
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for v in range(256):
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if eep[sa + v] != v:
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print('Fail at address {} data {} should be {}'.format(sa + v, eep[sa + v], v))
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break
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else:
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print('Test of byte addressing passed')
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data = uos.urandom(30)
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sa = 2000
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eep[sa:sa + 30] = data
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if eep[sa:sa + 30] == data:
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print('Test of slice readback passed')
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def fstest(format=False):
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eep = get_eep()
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if format:
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uos.VfsFat.mkfs(eep)
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vfs=uos.VfsFat(eep)
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try:
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uos.mount(vfs,'/eeprom')
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except OSError: # Already mounted
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pass
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print('Contents of "/": {}'.format(uos.listdir('/')))
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print('Contents of "/eeprom": {}'.format(uos.listdir('/eeprom')))
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print(uos.statvfs('/eeprom'))
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def full_test():
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eep = get_eep()
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page = 0
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for sa in range(0, len(eep), 128):
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data = uos.urandom(128)
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eep[sa:sa + 128] = data
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if eep[sa:sa + 128] == data:
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print('Page {} passed'.format(page))
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else:
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print('Page {} readback failed.'.format(page))
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page += 1
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