1#!/usr/bin/env python
2
3# Author: Brendan Le Foll <brendan.le.foll@intel.com>
4# Copyright (c) 2015 Intel Corporation.
5#
6# Permission is hereby granted, free of charge, to any person obtaining
7# a copy of this software and associated documentation files (the
8# "Software"), to deal in the Software without restriction, including
9# without limitation the rights to use, copy, modify, merge, publish,
10# distribute, sublicense, and/or sell copies of the Software, and to
11# permit persons to whom the Software is furnished to do so, subject to
12# the following conditions:
13#
14# The above copyright notice and this permission notice shall be
15# included in all copies or substantial portions of the Software.
16#
17# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
21# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE
24
25import mraa as m
26import random as rand
27
28# Excuse the super boring example, I was out of fun devices to play with, this
29# will write and read the same data back to itself, a few 100 times, just short
30# MISO & MOSI on your board
31
32dev = m.Spi(0)
33
34for x in range(0,100):
35  txbuf = bytearray(4)
36  for y in range(0,4):
37    txbuf[y] = rand.randrange(0, 256)
38  rxbuf = dev.write(txbuf)
39  if rxbuf != txbuf:
40    print("We have an error captain!")
41    break
42    exit(1)
43
44