#!/usr/bin/env python

# Author: Brendan Le Foll <brendan.le.foll@intel.com>
# Copyright (c) 2015 Intel Corporation.
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE

import mraa as m
import random as rand

# Excuse the super boring example, I was out of fun devices to play with, this
# will write and read the same data back to itself, a few 100 times, just short
# MISO & MOSI on your board

dev = m.Spi(0)

for x in range(0,100):
  txbuf = bytearray(4)
  for y in range(0,4):
    txbuf[y] = rand.randrange(0, 256)
  rxbuf = dev.write(txbuf)
  if rxbuf != txbuf:
    print("We have an error captain!")
    break
    exit(1)