1 #!/usr/bin/env python 2 3 # Author: Alex Tereschenko <alext.mkrs (at] gmail.com> 4 # Copyright (c) 2015 Alex Tereschenko 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 26 27 # Initialize UART 28 u=mraa.Uart(0) 29 30 # Set UART parameters 31 u.setBaudRate(115200) 32 u.setMode(8, mraa.UART_PARITY_NONE, 1) 33 u.setFlowcontrol(False, False) 34 35 # Start a neverending loop waiting for data to arrive. 36 # Press Ctrl+C to get out of it. 37 while True: 38 if u.dataAvailable(): 39 # We are doing 1-byte reads here 40 data_byte = u.readStr(1) 41 print(data_byte) 42 # Just a two-way half-duplex communication example, "X" is a flag 43 if data_byte == "X": 44 u.writeStr("Yes, master!") 45
