Revision 685
Added by Allen Xie about 2 months ago
| Software files/Raspberry Pi/simple_gpio_test.py | ||
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# Print introductory information
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print("-------------------------------------------------")
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print("Hello! Welcome to the Capstone RPi GPIO test program.")
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print("This program will either light an LED, or read a button input.")
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print("The wiring instructions are given later in the program.")
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print("To get a pinout of the Raspberry Pi, run the command \"pinout\" in the" +
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" terminal.")
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print("This program is meant to be used with the Design Lab MCU tester.")
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print("To get a pinout of the Raspberry Pi, run the command \"pinout\" in " +
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"the terminal.")
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print("Plug a 3.3V power pin into the tester's VCC header.")
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print("Plug a ground pin into the tester's GND header.")
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print("Plug the pin to be tested into the tester's pin header.")
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print("Turn the potentiometer all the way counter-clockwise.")
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print("Note that to test say GPIO4, or pin 7, use the number 4 in this" +
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" program.")
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print("Picking either input or output would lock you in an infinite loop.")
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print("Once you are satisfied, Ctrl-C to exit out of this script.\n")
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print("Once you are satisfied, Ctrl-C to exit out of this script\n")
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# Does user want to test input by reading a button or output by lighting an LED
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print("Are you testing input or output? Please type \"input\" or \"output\"")
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# Ctrl-C to exit
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while True:
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option = input()
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if option == "input" or option == "output":
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break
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else:
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print("Please type \"input\" or \"output\"")
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# Testing lighting an LED
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if option == "output":
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# Get pin number that user wants to test
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# Does user want to test input or output?
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print("Are you testing input or output?")
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print("Please type \"input\" or \"output\": ")
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while True:
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output_pin = int(input("What is the pin you would connect an LED to? " +
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"For example, type 2 for GPIO2"))
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if output_pin >= 1 and output_pin <= 27:
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option = input()
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if option == "input" or option == "output":
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break
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else:
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print("Invalid pin number!")
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print("Please type \"input\" or \"output\"")
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# Set up LED object
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led = LED(output_pin)
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# Testing lighting an LED
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if option == "output":
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print("Please toggle the toggle switch to Output.")
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# Give instructions
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print("Please connect the long end of the LED to one end of a resistor," +
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f" then connect the other end of the resistor to pin {output_pin}." +
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" Then connect the short end of the LED to ground.")
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# Get pin number that user wants to test
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while True:
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output_pin = int(input("What is the pin you're testing? "))
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if output_pin >= 1 and output_pin <= 27:
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break
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else:
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print("Invalid pin number!")
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# Blink LED
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print(f"Blinking LED connected to pin {output_pin}")
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print("Ctrl-C to exit")
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while True:
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led.on()
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sleep(1)
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led.off()
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sleep(1)
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# Set up LED object
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led = LED(output_pin)
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# Testing reading a button
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if option == "input":
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# Get pin number that user wants to test
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while True:
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input_pin = int(input("What is the pin the button is connected to? " +
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"For example, type 2 for GPIO2"))
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if input_pin >= 1 and input_pin <= 27:
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break
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else:
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print("Invalid pin number!")
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# Blink LED 10 times
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print(f"Blinking LED connected to pin {output_pin}")
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print("Ctrl-C to exit")
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for i in range(5):
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led.on()
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sleep(1)
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led.off()
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sleep(1)
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# Testing reading a button
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elif option == "input":
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print("Please toggle the toggle switch to Input.")
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print("Please also turn the potentiometer all the way CCW.")
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# Set up button object
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button = Button(input_pin)
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# Get pin number that user wants to test
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while True:
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input_pin = int(input("What is the pin you want to test? "))
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# There are only 27 GPIOs
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if input_pin >= 1 and input_pin <= 27:
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break
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else:
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print("Invalid pin number!")
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# Give instructions
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print(f"Please connect one end of the button to pin {input_pin}. Then" +
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" connect the other end of the button to ground." +
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" Then press the button.")
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print("If the button is pressed, this program will print" +
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" \"Button pressed!\"")
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print("Ctrl-C to exit")
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# Set up button object
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button = Button(input_pin)
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# Look for button press (when the pin reads LOW, as it defaults to internal
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# pull-up)
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while True:
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button.wait_for_press()
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print("Button pressed!")
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sleep(0.2)
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print("Every half a second, if the button is pressed, the program " +
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"will say so!")
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# Press the button
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for i in range(10):
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if button.value() == 1:
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print("Button is pressed!")
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sleep(0.5)
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Also available in: Unified diff
Update the gpio test script for RPi for use with the board