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Merge pull request #6 from mcci-catena/issue5
fix #5: add feature to load FW via Serial
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,128 @@ | ||
| #!/usr/bin/env python3 | ||
|
|
||
| ############################################################################## | ||
| # | ||
| # Module: catena-download.py | ||
| # | ||
| # Function: | ||
| # Push a file to Catena | ||
| # | ||
| # Copyright and License: | ||
| # Copyright (C) 2021, MCCI Corporation. See accompanying LICENSE file | ||
| # | ||
| # Author: | ||
| # Terry Moore, MCCI April, 2021 | ||
| # | ||
| ############################################################################## | ||
|
|
||
| import argparse | ||
| import serial | ||
|
|
||
| global gVerbose | ||
| gVerbose = False | ||
|
|
||
| ############################################################################## | ||
| # | ||
| # Name: ParseCommandArgs() | ||
| # | ||
| # Function: | ||
| # Parse the command line arguments | ||
| # | ||
| # Definition: | ||
| # ParseCommandArgs() -> Namespace | ||
| # | ||
| ############################################################################## | ||
|
|
||
| def ParseCommandArgs(): | ||
| def checkPath(s): | ||
| result = Path(s) | ||
| if not result.is_dir(): | ||
| raise ValueError("not a directory") | ||
|
|
||
| return result | ||
|
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| parser = argparse.ArgumentParser(description="download an image file to a Catena using the protocol demonstrated by catena-download.ino") | ||
| parser.add_argument( | ||
| "hInput", | ||
| metavar="{inputBinFile}", | ||
| type=argparse.FileType('rb'), | ||
| help="Input binary file" | ||
| ) | ||
| parser.add_argument( | ||
| "sComPort", metavar="{portname}", | ||
| help="Where to put generated output files" | ||
| ) | ||
| parser.add_argument( | ||
| "--baud", "-b", | ||
| help="baud rate", | ||
| default=115200 | ||
| ) | ||
| parser.add_argument( | ||
| "--verbose", "-v", | ||
| action="store_true", | ||
| help="verbose output", | ||
| default=False | ||
| ) | ||
| parser.add_argument( | ||
| "--command", "-c", metavar="{command}", | ||
| help="Command to send to trigger update", | ||
| default="system update", | ||
| dest="sCommand" | ||
| ) | ||
| return parser.parse_args() | ||
|
|
||
| # main function | ||
| def main(): | ||
| global gVerbose | ||
| args = ParseCommandArgs() | ||
| gVerbose = args.verbose | ||
|
|
||
| # get the command as a buffer | ||
| # read the file | ||
| fileImage = args.hInput.read(-1) | ||
| args.hInput.close() | ||
| if gVerbose: | ||
| print("Read file: size {}".format(len(fileImage))) | ||
| v = memoryview(fileImage) | ||
|
|
||
| # open the serial port | ||
| hPort = serial.Serial(args.sComPort, baudrate=args.baud) | ||
| if gVerbose: | ||
| print("Using port {}".format(hPort.name)) | ||
|
|
||
| # read and discare chars | ||
| hPort.read(hPort.in_waiting); | ||
|
|
||
| # send the command | ||
| hPort.write(args.sCommand.encode('ascii') + b"\n"); | ||
|
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| i = 0 | ||
| chunkSize = 128 | ||
| zpad = b'\0' * chunkSize | ||
|
|
||
| while True: | ||
| c = hPort.read(1) | ||
| if gVerbose: | ||
| print(c.decode(encoding="ascii"), end='', sep='', flush=True) | ||
| if c == b'?': | ||
| msg = hPort.read_until() | ||
| if gVerbose: | ||
| print(msg.decode(encoding="ascii"), end='', sep='', flush=True) | ||
| print("Failed!") | ||
| exit(1); | ||
| if c == b'<': | ||
| chunk = fileImage[i: i + chunkSize] | ||
| if len(chunk) != 0: | ||
| i += len(chunk) | ||
| chunk = (chunk + zpad)[0 : chunkSize] | ||
| hPort.write(chunk) | ||
| elif c == b'O': | ||
| msg = hPort.read_until() | ||
| if gVerbose: | ||
| print(msg.decode(encoding="ascii"), end='', sep='', flush=True) | ||
| print("Success!") | ||
| exit(0) | ||
|
|
||
| #### the standard trailer ##### | ||
| if __name__ == '__main__': | ||
| main() |
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