#!/usr/bin/python

import sys
import time
from pymlab import config


### Script Arguments ###############################################

if len(sys.argv) != 2:
    sys.stderr.write("Invalid number of arguments.\n")
    sys.stderr.write("Usage: %s PORT ADDRESS\n" % (sys.argv[0], ))
    sys.exit(1)

port    = eval(sys.argv[1])
#### Sensor Configuration ###########################################


cfg = config.Config(
    i2c = {
        "port": port,
    },
    bus = [
        {
            "name":"gpio",
            "type":"I2CIO_TCA9535"
        },
    ],
)


cfg.initialize()

print "I2C GPIO example for I2CIO01A MLAB module. \r\n"

gpio = cfg.get_device("gpio")

try:
    gpio.config_ports(0x0000, 0x0000)
    state = 0b1

    while True:
        for i in range(0,7):
            state = state << 1
            gpio.set_ports(state, state)
            print bin(state)
            time.sleep(0.1)

        for i in range(0,7):
            state = state >> 1
            gpio.set_ports(state, state)
            print bin(state)
            time.sleep(0.1)
finally:
    print "stop"