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circuitpython/examples/pins.py

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2.0 KiB

# Print a nice list of pins, their current settings, and available afs.
# Requires pins_af.py from ports/stm32/build-PYBV10/ directory.
import pyb
import pins_af
def af():
max_name_width = 0
max_af_width = 0
for pin_entry in pins_af.PINS_AF:
max_name_width = max(max_name_width, len(pin_entry[0]))
for af_entry in pin_entry[1:]:
max_af_width = max(max_af_width, len(af_entry[1]))
for pin_entry in pins_af.PINS_AF:
pin_name = pin_entry[0]
print('%-*s ' % (max_name_width, pin_name), end='')
for af_entry in pin_entry[1:]:
print('%2d: %-*s ' % (af_entry[0], max_af_width, af_entry[1]), end='')
print('')
def pins():
mode_str = { pyb.Pin.IN : 'IN',
pyb.Pin.OUT_PP : 'OUT_PP',
pyb.Pin.OUT_OD : 'OUT_OD',
pyb.Pin.AF_PP : 'AF_PP',
pyb.Pin.AF_OD : 'AF_OD',
pyb.Pin.ANALOG : 'ANALOG' }
pull_str = { pyb.Pin.PULL_NONE : '',
pyb.Pin.PULL_UP : 'PULL_UP',
pyb.Pin.PULL_DOWN : 'PULL_DOWN' }
width = [0, 0, 0, 0]
rows = []
for pin_entry in pins_af.PINS_AF:
row = []
pin_name = pin_entry[0]
pin = pyb.Pin(pin_name)
pin_mode = pin.mode()
row.append(pin_name)
row.append(mode_str[pin_mode])
row.append(pull_str[pin.pull()])
if pin_mode == pyb.Pin.AF_PP or pin_mode == pyb.Pin.AF_OD:
pin_af = pin.af()
for af_entry in pin_entry[1:]:
if pin_af == af_entry[0]:
af_str = '%d: %s' % (pin_af, af_entry[1])
break
else:
af_str = '%d' % pin_af
else:
af_str = ''
row.append(af_str)
for col in range(len(width)):
width[col] = max(width[col], len(row[col]))
rows.append(row)
for row in rows:
for col in range(len(width)):
print('%-*s ' % (width[col], row[col]), end='')
print('')