ev3dev-i2c-probe.py

#!/usr/bin/env python

import smbus
import time

for bus in range(3, 7):
    curport = (bus - 2)
    print "bus: %2d  port: %2d " % (bus, curport)
    try:
        i2c = smbus.SMBus(bus)
        print "         Input port %d:" % (bus - 2)
        for addr in range(0x01, 0x80):
            try:
                label = { 0: "Version", 8: " Vendor", 16: "Product" }
                for offset in range(0, 24, 8):
                    data = i2c.read_i2c_block_data(addr, offset, 8)
                    data.append(0)
                    i = 0
                    s = ''
                    while data[i]:
                        s += str(chr(data[i]))
                        i += 1
                    if offset == 0:
                        print "             Address: 0x%02X" % addr
                    print "             %s: '%s'" % (label[offset], s)
                    time.sleep(0.02)
            except IOError, err:
                if err.errno != 6:
                    print "             Address 0x%02X: %s" % (addr, err)
    except IOError, err:
        if err.errno != 2:
            print "             Input port %d: %s" % (bus - 2), err