ummodTestDriver.py

gistfile1.txt

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Thu Feb  4 09:16:27 2021

@author: mark
"""

import serial
from numpy.random import randint

ser = serial.Serial("/dev/ttyUSB0", baudrate=9600)

# Test stm8 eForth via serial port
# Input
#   udl - lower word of unsigned double dividend (0 - 0xFFFF)
#   udh - higher word of unsigned double dividend (0 - 0xFFFF)
#   un - unsigned word of divisor
# Output
#   flag - boolean, True if expected result is detected
#   output_str - response from stm8 of form "HEX udl udh un UM/MOD . . Quotient Remainder ok"
def checkUmMod(udl,udh,un):
    input_str = "HEX {0:s} {1:s} {2:s} UM/MOD . . \n\r".format(hex(udl)[2:],hex(udh)[2:],hex(un)[2:])
    ser.write(bytes(input_str, "utf-8"))
    output_str = ser.readline()
    try:
        H, UDL, UDH, UN, OP, Dot1, Dot2, Quo, Rem, OK = output_str.split()
        UD = int(0x10000 * int(UDH,16) + int(UDL,16))
        if UN == b'0':
            Quo_Exp = 0xFFFF
            Rem_Exp = 0
        else:
            Quo_Exp = int(UD / int(UN,16))
            if Quo_Exp >= 0x10000:
                Quo_Exp = 0xFFFF
                Rem_Exp = 0
            else:
                Rem_Exp = UD % int(UN,16)
        if (Rem_Exp != int(Rem,16)) or (Quo_Exp != int(Quo,16)):
            passed = False
        else:
            passed = True
    except:
        print("Can't parse: {0}".format(output_str))
        passed = False
    return passed, output_str, hex(Quo_Exp), hex(Rem_Exp)
    

if __name__ == "__main__":
    for k in range(100000):
        udl = randint(0x10000, size=1)[0]
        udh = randint(0x10000, size=1)[0]
        un = randint(0x10000, size=1)[0]
        passed, output_str, Quo_Exp, Rem_Exp = checkUmMod(udl, udh, un)
        if not passed:
            print(k, output_str, Quo_Exp, Rem_Exp)