1 #!/usr/bin/env python 2 3 # Author: Brendan Le Foll <brendan.le.foll (at] 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 25 import mraa as m 26 import 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 32 dev = m.Spi(0) 33 34 for 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
