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 Class
  • Switches
  • RGB LED
• Display

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.

import interstate75

display = interstate75.DISPLAY_INTERSTATE75_32X32

board = interstate75.Interstate75(display=display)

The version of Intersate75 you're using should be automatically detected. Check board.interstate75w to verify this. It should be True on a W and False on a non-W.

You can choose the HUB75 matrix display size that you wish to use by defining display= as one of the following:

DISPLAY_INTERSTATE75_32X32
DISPLAY_INTERSTATE75_64X32
DISPLAY_INTERSTATE75_96X32
DISPLAY_INTERSTATE75_128X32
DISPLAY_INTERSTATE75_64X64
DISPLAY_INTERSTATE75_128X64
DISPLAY_INTERSTATE75_192X64
DISPLAY_INTERSTATE75_256X64

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