mirror of
https://github.com/eclipse/mraa.git
synced 2025-10-20 13:34:28 +08:00
eda9d03547
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
63 lines
2.5 KiB
Python
63 lines
2.5 KiB
Python
#!/usr/bin/env python
|
|
|
|
# Author: Alex Tereschenko <alext.mkrs@gmail.com>
|
|
# Copyright (c) 2015 Alex Tereschenko
|
|
#
|
|
# 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
|
|
#
|
|
# Example Usage: Sends some info messages in the form of bytearray and strings
|
|
# along with `X` flag and prints the response from other end.
|
|
# This example requires uart_receiver.py to be running on the
|
|
# other end.
|
|
|
|
import mraa
|
|
import sys
|
|
|
|
sys.stdout.write("Initializing UART...")
|
|
u = mraa.Uart(0)
|
|
print("...done")
|
|
|
|
print("Setting UART parameters: baudrate 115200, 8N1, no flow control")
|
|
u.setBaudRate(115200)
|
|
u.setMode(8, mraa.UART_PARITY_NONE, 1)
|
|
u.setFlowcontrol(False, False)
|
|
|
|
msg_b = bytearray("Hello, mraa byte array!", "ascii")
|
|
print("Sending message as a byte array: '{0}'".format(msg_b))
|
|
u.write(msg_b)
|
|
# Make sure the message gets out to the line.
|
|
# It's generally unnecessary (and performance-degrading) to do this explicitly,
|
|
# UART driver normally takes care of that, but it may be useful with specific
|
|
# half-duplex endpoints, like Dynamixel servos.
|
|
u.flush()
|
|
|
|
msg_s = "Hello, mraa string!"
|
|
print("Sending message as a string: '{0}'".format(msg_s))
|
|
u.writeStr(msg_s)
|
|
|
|
sys.stdout.write("Two-way, half-duplex communication, sending a flag...")
|
|
u.writeStr("X")
|
|
print("...sent, awaiting response...")
|
|
# Checking for data in the RX buffer, giving it a 100ms timeout
|
|
if u.dataAvailable(100):
|
|
print("We've got a response: '{0}', says the other side".format(u.readStr(20)))
|
|
else:
|
|
print("No data received, do you have anything at the other end?")
|