MicroPython - Class 2: Difference between revisions
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==Example Files== | ==Example Files== | ||
[https://merkles.com/MicroPythonClass2.zip MicroPythonClass2.zip] | [https://merkles.com/MicroPythonClass2.zip MicroPythonClass2.zip] | ||
==Raspberry Pi Pico 2 W Pinout== | |||
https://datasheets.raspberrypi.com/picow/pico-2-w-pinout.pdf | |||
==Pins – Controlling / Using Pins== | ==Pins – Controlling / Using Pins== | ||
==Input== | ==Input== | ||
Revision as of 09:47, 7 May 2025
MicroPython - Class 2
Example Files
Raspberry Pi Pico 2 W Pinout
https://datasheets.raspberrypi.com/picow/pico-2-w-pinout.pdf
Pins – Controlling / Using Pins
Input
# define input with pull-up button = machine.Pin(18, machine.Pin.IN, machine.Pin.PULL_UP)
Input - Interrupt
# define input with pull-up button = machine.Pin(18, machine.Pin.IN, machine.Pin.PULL_UP) # interrupt with falling edge of signal button.irq(trigger=machine.Pin.IRQ_FALLING, handler=button_change) The function, "button_change" will get called with each interrupt
Output
led= machine.Pin(17, machine.Pin.OUT) # Define output
Special Function
sda_pin = machine.Pin(14) # define the pins to use scl_pin = machine.Pin(15) #create I2C bus object i2c_bus = machine.I2C(1,sda=sda_pin,scl=scl_pin, freq=400000) https://docs.micropython.org/en/latest/library/machine.I2C.html
Interfacing different devices
TM1637 7-segment display
The TM1637, 7-segment display and keypad scanner IC, uses an “I2C Like” two wire serial interface to drive multiple 7-segment displays. This interface uses DIO and CLK signals, to “bit-bang” commands and data to the display chip.