pimoroni-pico/micropython/modules_py/interstate75.md

Interstate75 (MicroPython)

This library offers convenient functions for interacting with Interstate75 and Interstate75W - Interstate75 and Interstate75W offer a convenient way and 2 input buttons for all your display and control needs.

Table of Content

• Table of Content
• Interstate75 Module
  • Switches
  • RGB LED

Interstate75 Class

The Interstate75 class deals with RGB LED and buttons on the Interstate75 and 75W. To create one, import the interstate75 module, then define a new board variable.

This is where you define the HUB75 matrix display size that you wish to use by defining display=

DISPLAY_INTERSTATE75_32X32
DISPLAY_INTERSTATE75_64X32
DISPLAY_INTERSTATE75_96X32
DISPLAY_INTERSTATE75_128X32
DISPLAY_INTERSTATE75_64X64
DISPLAY_INTERSTATE75_128X64
DISPLAY_INTERSTATE75_192X64
DISPLAY_INTERSTATE75_256X64

You are able to set which version of the Interstate75 that you are using with the interstate75w=. By default this value is set to True to use the Interstate75W button layout. By setting it to False the module will use the Interstate75 button layout. If you are using an Interstate75W it is important to set this value to interstate75w=True, otherwise this could disable the WiFi in your project

import interstate75

display = interstate75.DISPLAY_INTERSTATE75_32X32

board = interstate75.Interstate75(display=display)

Or for an Interstate75W.

import interstate75

display = interstate75.DISPLAY_INTERSTATE75_32X32

board = interstate75.Interstate75(display=display, interstate75w=False)  #This is th e setup to be able to access the both A and BOOT on the Interstate75 (non W)

From here, all features can be accessed by calling functions on board. In addition, when using Qwiic / Stemma QT devices, the I2C channel to use can be accessed with board.i2c.

Switches

Interstate75 and 75W have two switches in the front of the board. To read one of the switches, call .switch_pressed(switch), where switch is a value from 0 to .NUM_SWITCHES - 1. This returns True when the specified switch is pressed, and False otherwise.

To read a specific input, the interstate75 module contains these handy constants:

• SWITCH_A = 0
• SWITCH_B = 1

The Interstate75 (non W) uses the boot button instead of SWITCH_B

• SWITCH_A = 0
• SWITCH_BOOT = 1

if board.switch_pressed(SWITCH_A):
  # Do something interesting here!

# Either for Interstate 75W
if board.switch_pressed(SWITCH_B):
  # Do something else even more interesting here!

# Or for Interstate 75
if board.switch_pressed(SWITCH_BOOT):
  # Do something else even more interesting here!

RGB LED

The Interstate has an RGB LED. This is accessed via the following method.

.set_led(r, g, b)

Where r, g, b are values between 0 and 255

example:

board.set_led(255, 0, 0)  # Makes the LED Red
board.set_led(0, 255, 0)  # Makes the LED Blue
board.set_led(0, 0, 255)  # Makes the LED Green

Display

The display is all handled by our custom picographics drivers they can be accessed via .display.

example:

display = board.display
display.text("Hello World!", 0, 0)
display.line(0, 0, 128, 64) 
board.update()  # Update display with the above items

All the picographics functions can be found Here