MicroPython - Class 2: Difference between revisions
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(Created page with "<big>MicroPython - Class 2</big> ==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==...") |
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i2c_bus = machine.I2C(1,sda=sda_pin,scl=scl_pin, freq=400000) | i2c_bus = machine.I2C(1,sda=sda_pin,scl=scl_pin, freq=400000) | ||
https://docs.micropython.org/en/latest/library/machine.I2C.html | 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, driven like an I2C interface | |||
to “bit-bang” commands and data to the display chip. | |||
Revision as of 16:23, 6 May 2025
MicroPython - Class 2
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, driven like an I2C interface to “bit-bang” commands and data to the display chip.