#!/bin/env python3
import gex

# experiment with the dot matrix driver

with gex.Client(gex.TrxRawUSB()) as client:
    bus = gex.I2C(client, 'i2c')
    addr = 0x61
    bus.write_reg(addr, 0x00, 0b00011000) # dual matrix
    bus.write_reg(addr, 0x0D, 0b00001110) # 34 mA
    bus.write_reg(addr, 0x19, 64) # set brightness
    # matrix 1
    bus.write_reg(addr, 0x01, [
        0xAA, 0x55, 0xAA, 0x55,
        0xAA, 0x55, 0xAA, 0x55
    ])
    # matrix 2
    bus.write_reg(addr, 0x0E, [
        0xFF, 0x00, 0xFF, 0x00,
        0xFF, 0x00, 0xFF, 0x00
    ])
    # update display
    bus.write_reg(addr, 0x0C, 0x01)