b4449a0c2c
Add script to capture tracing stream data with UART backend. This script is developed based on pyserial, so install it correctly before using the script. Signed-off-by: Wentong Wu <wentong.wu@intel.com>
60 lines
1.6 KiB
Python
60 lines
1.6 KiB
Python
#!/usr/bin/env python3
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#
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# Copyright (c) 2019 Intel Corporation.
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#
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# SPDX-License-Identifier: Apache-2.0
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"""
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Script to capture tracing data with UART backend.
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"""
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import sys
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import serial
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import argparse
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def parse_args():
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global args
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parser = argparse.ArgumentParser(
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description=__doc__,
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formatter_class=argparse.RawDescriptionHelpFormatter)
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parser.add_argument("-d", "--serial_port", required=True,
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help="serial port")
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parser.add_argument("-b", "--serial_baudrate", required=True,
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help="serial baudrate")
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parser.add_argument("-o", "--output", default='channel0_0',
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required=False, help="tracing data output file")
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args = parser.parse_args()
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def main():
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parse_args()
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serial_port = args.serial_port
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serial_baudrate = args.serial_baudrate
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output_file = args.output
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try:
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ser = serial.Serial(serial_port, serial_baudrate)
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ser.isOpen()
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except serial.SerialException as e:
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sys.exit("{}".format(e))
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print("serial open success")
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#enable device tracing
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ser.write("enable\r".encode())
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with open(output_file, "wb") as file_desc:
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while True:
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count = ser.inWaiting()
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if count > 0:
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while count > 0:
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data = ser.read()
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file_desc.write(data)
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count -= 1
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ser.close()
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if __name__=="__main__":
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try:
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main()
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except KeyboardInterrupt:
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print('Data capture interrupted, data saved into {}'.format(args.output))
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sys.exit(0)
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