170bdd104f
Large change that removes the duplicated MIT notice withe a spdx tag Signed-off-by: Thomas Ingleby <thomas.ingleby@intel.com>
46 lines
1.5 KiB
Python
46 lines
1.5 KiB
Python
#!/usr/bin/env python
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# Author: Alex Tereschenko <alext.mkrs@gmail.com>
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# Copyright (c) 2015 Alex Tereschenko
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#
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# SPDX-License-Identifier: MIT
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#
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# Example Usage: Sends some info messages in the form of bytearray and strings
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# along with `X` flag and prints the response from other end.
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# This example requires uart_receiver.py to be running on the
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# other end.
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import mraa
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import sys
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sys.stdout.write("Initializing UART...")
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u = mraa.Uart(0)
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print("...done")
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print("Setting UART parameters: baudrate 115200, 8N1, no flow control")
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u.setBaudRate(115200)
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u.setMode(8, mraa.UART_PARITY_NONE, 1)
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u.setFlowcontrol(False, False)
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msg_b = bytearray("Hello, mraa byte array!", "ascii")
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print("Sending message as a byte array: '{0}'".format(msg_b))
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u.write(msg_b)
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# Make sure the message gets out to the line.
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# It's generally unnecessary (and performance-degrading) to do this explicitly,
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# UART driver normally takes care of that, but it may be useful with specific
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# half-duplex endpoints, like Dynamixel servos.
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u.flush()
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msg_s = "Hello, mraa string!"
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print("Sending message as a string: '{0}'".format(msg_s))
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u.writeStr(msg_s)
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sys.stdout.write("Two-way, half-duplex communication, sending a flag...")
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u.writeStr("X")
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print("...sent, awaiting response...")
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# Checking for data in the RX buffer, giving it a 100ms timeout
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if u.dataAvailable(100):
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print("We've got a response: '{0}', says the other side".format(u.readStr(20)))
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else:
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print("No data received, do you have anything at the other end?")
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