2021-01-03 03:54:15 +09:00
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#!/usr/bin/env python3
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import smbus # install python3-smbus with apt
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import time
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i2c = smbus.SMBus(1)
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addr = 0x28
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def read(reg):
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v = i2c.read_byte_data(addr, reg)
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return v
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def readw(reg):
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v = i2c.read_word_data(addr, reg)
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return v & 0x00ff, (v & 0xff00) >> 8
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def write(reg, v):
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i2c.write_byte_data(addr, reg, v)
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def setup():
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read(0x00)
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read(0x0a)
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read(0x01)
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read(0x40)
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read(0x41)
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read(0x48)
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read(0x00)
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readw(0x04)
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read(0x01)
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read(0x0a)
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read(0x00)
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read(0x0a)
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read(0x01)
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write(0x88, 0x08)
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write(0x82, 0x05)
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read(0x00)
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read(0x0a)
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write(0x82, 0x02)
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write(0x82, 0x03)
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2021-01-03 17:02:49 +09:00
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def setup_simple():
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"""Simplified sequence without redundant calls"""
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print('Waiting the MCU to get ready')
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st = read(0x00)
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while st & 0x40 != 0:
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print('.', end='')
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st = read(0x00)
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time.sleep(0.1)
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working = read(0x0a) & 0x01 > 0
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if working:
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print('MCU is working')
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else:
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print('MCU is suspended')
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event = read(0x01) & 0x20 > 0
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if event:
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print('Event is enabled')
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else:
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print('Event is disabled')
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v = read(0x40)
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print(f'Reg (R) 0x40 -> {v:#04x}')
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read(0x41)
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print(f'Reg (R) 0x41 -> {v:#04x}')
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read(0x48)
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print(f'Reg (R) 0x48 -> {v:#04x}')
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write(0x88, 0x08)
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print('Reg (W) 0x88 = 0x08')
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write(0x82, 0x05)
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print('Reg (W) 0x82 = 0x05')
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write(0x82, 0x02)
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print('Reg (W) 0x82 = 0x02')
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write(0x82, 0x03)
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print('Reg (W) 0x82 = 0x03')
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2021-01-03 03:54:15 +09:00
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def read_keys():
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keys = []
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n, key = readw(0x04)
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if key == 0x00:
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return
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keys.append(key)
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2021-01-03 17:02:49 +09:00
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if n >= 1:
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2021-01-03 03:54:15 +09:00
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k1, k2 = readw(0x04)
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2021-01-03 17:02:49 +09:00
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keys = keys + [k1, k2]
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keys = keys[:n]
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2021-01-03 03:54:15 +09:00
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print(f"N = {n:#04x}")
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keys = [f"{key:#04x}" for key in keys]
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print(f"Keys = {', '.join(keys)}")
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2021-01-03 17:02:49 +09:00
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setup_simple()
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2021-01-03 03:54:15 +09:00
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while True:
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time.sleep(0.1)
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read_keys()
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