#!/usr/bin/env python

"""
Flash the WiPy (format, update service pack and program).

Example:

> python uniflash.py -u "C:\ti\uniflash_3.2\uniflashCLI.bat" -c "C:\VirtualBoxShared\GitHub\wipy_uniflash.usf" -p 8 -s "C:\ti\CC31xx_CC32xx_ServicePack_1.0.0.10.0\servicepack_1.0.0.10.0.bin"

or:

> python uniflash.py -u "C:\ti\uniflash_3.2\uniflashCLI.bat" -c "C:\VirtualBoxShared\GitHub\launchxl_uniflash.usf" -p 8 -s "C:\ti\CC31xx_CC32xx_ServicePack_1.0.0.10.0\servicepack_1.0.0.10.0.bin"

"""

import sys
import argparse
import subprocess


def print_exception(e):
    print ('Exception: {}, on line {}'.format(e, sys.exc_info()[-1].tb_lineno))


def execute(command):
    process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
    cmd_log = ""

    # Poll process for new output until finished
    while True:
        nextline = process.stdout.readline()
        if nextline == '' and process.poll() != None:
            break
        sys.stdout.write(nextline)
        sys.stdout.flush()
        cmd_log += nextline

    output = process.communicate()[0]
    exitCode = process.returncode

    if exitCode == 0:
        return cmd_log
    else:
        raise ProcessException(command, exitCode, output)

def main():
    cmd_parser = argparse.ArgumentParser(description='Flash the WiPy and optionally run a small test on it.')
    cmd_parser.add_argument('-u', '--uniflash', default=None, help='the path to the uniflash cli executable')
    cmd_parser.add_argument('-c', '--config', default=None, help='the path to the uniflash config file')
    cmd_parser.add_argument('-p', '--port', default=8, help='the com serial port')
    cmd_parser.add_argument('-s', '--servicepack', default=None, help='the path to the servicepack file')
    args = cmd_parser.parse_args()

    output = ""
    com_port = 'com=' + str(args.port)
    servicepack_path = 'spPath=' + args.servicepack

    try:
        if args.uniflash == None or args.config == None:
            raise ValueError('uniflash path and config path are mandatory')
        if args.servicepack == None:
            output += execute([args.uniflash, '-config', args.config, '-setOptions', com_port, '-operations', 'format', 'program'])
        else:
            output += execute([args.uniflash, '-config', args.config, '-setOptions', com_port, servicepack_path, '-operations', 'format', 'servicePackUpdate', 'program'])
    except Exception as e:
        print_exception(e)
        output = ""
    finally:
        if "Finish Executing operation: program" in output:
            print("======================================")
            print("Board programmed OK")
            print("======================================")
            sys.exit(0)
        else:
            print("======================================")
            print("ERROR: Programming failed!")
            print("======================================")
            sys.exit(1)

if __name__ == "__main__":
    main()