pro93-write

#!/usr/bin/env python3

import serial
import time
import sys
import datetime
import argparse

parser = argparse.ArgumentParser(description='writes an image.')
parser.add_argument('infile', help='writes an image out')
args = parser.parse_args()

serial_options = {
    'port':'/dev/ttyUSB0',
    'baudrate':4800,
    'bytesize':8,
    'parity':'O',
    'stopbits':2,
    'timeout':None,
    'xonxoff':False,
    'rtscts':False,
    'dsrdtr':True
}
preamble = bytes.fromhex('a5' * 50)
preamble2 = bytes.fromhex('01991352')

image = None
with open(args.infile, "rb") as f:
    image = f.read()

if image is None:
    print("No image read")
    sys.exit(1)

# Reverse the image
image = image[::-1]

error_count = 0
with serial.Serial(**serial_options) as port:
    port.write(preamble)
    print(port.read(50).hex())
    time.sleep(0.1)
    port.write(preamble2)
    print(port.read(4).hex())
    time.sleep(1)
    for i in range(633):
        s = i * 32
        e = s + 32
        section = image[s:e]
        #print(f"S {s} {e} ")
        #print("W " + section.hex())
        port.write(section)
        time.sleep(0.1)
        readback = port.read(32)
        #print("R " + readback.hex())
        if section != readback:
            print("ERROR! readback != written")
            error_count += 1
        print(f"{i} of 633 written")
if error_count > 0:
    print(f"Errors: {error_count}")