154 lines
No EOL
4.3 KiB
Python
154 lines
No EOL
4.3 KiB
Python
# The MIT License (MIT)
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#
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# Copyright (c) 2018 Shawn Hymel for Adafruit Industries
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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"""
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`gpio_test`
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====================================================
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GPIO Test Module
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* Author(s): Shawn Hymel
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* Date: December 8, 2018
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Implementation Notes
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--------------------
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Toggles all available GPIO on a board. Verify their operation with an LED,
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multimeter, another microcontroller, etc.
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Run this script as its own main.py to individually run the test, or compile
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with mpy-cross and call from separate test script.
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"""
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import board
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import digitalio
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import supervisor
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import time
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# Constants
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LED_ON_DELAY_TIME = 0.2 # Seconds
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LED_OFF_DELAY_TIME = 0.2 # Seconds
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LED_PIN_NAMES = ['L', 'LED', 'RED_LED', 'GREEN_LED', 'BLUE_LED']
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# Test result strings
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PASS = "PASS"
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FAIL = "FAIL"
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NA = "N/A"
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# Determine if given value is a number
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def _is_number(s):
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try:
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float(s)
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return True
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except ValueError:
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return False
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# Release pins
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def _deinit_pins(gpios):
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for g in gpios:
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g.deinit()
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# Toggle IO pins while waiting for answer
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def _toggle_wait(gpios):
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global test_results
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timestamp = time.monotonic()
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led_state = False
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print("Are the pins listed above toggling? [y/n]")
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while True:
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if led_state:
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if time.monotonic() > timestamp + LED_ON_DELAY_TIME:
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led_state = False
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timestamp = time.monotonic()
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else:
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if time.monotonic() > timestamp + LED_OFF_DELAY_TIME:
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led_state = True
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timestamp = time.monotonic()
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for gpio in gpios:
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gpio.value = led_state
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if supervisor.runtime.serial_bytes_available:
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answer = input()
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if answer == 'y':
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return True
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else:
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return False
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break
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def run_test(pins):
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# Create a list of analog GPIO pins
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analog_pins = [p for p in pins if p[0] == 'A' and _is_number(p[1])]
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# Create a list of digital GPIO
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digital_pins = [p for p in pins if p[0] == 'D' and _is_number(p[1])]
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# Toggle LEDs if we find any
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gpio_pins = analog_pins + digital_pins
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if gpio_pins:
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# Create a list of IO objects for us to toggle
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gpios = [digitalio.DigitalInOut(getattr(board, p)) for p in gpio_pins]
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# Print out the LEDs found
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print("GPIO pins found:", end=' ')
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for p in gpio_pins:
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print(p, end=' ')
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print('\n')
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# Set all IO to output
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for gpio in gpios:
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gpio.direction = digitalio.Direction.OUTPUT
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# Toggle pins while waiting for user to verify LEDs blinking
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result = _toggle_wait(gpios)
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# Release pins
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_deinit_pins(gpios)
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if result:
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return PASS, gpio_pins
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else:
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return FAIL, gpio_pins
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else:
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print("No GPIO pins found")
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return NA, []
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def _main():
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# List out all the pins available to us
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pins = [p for p in dir(board)]
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print()
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print("All pins found:", end=' ')
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# Print pins
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for p in pins:
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print(p, end=' ')
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print('\n')
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# Run test
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result = run_test(pins)
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print()
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print(result[0])
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print("Pins tested: " + str(result[1]))
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# Execute only if run as main.py or code.py
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if __name__ == "__main__":
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_main() |