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February 15, 2021 01:24
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ummodTestDriver.py
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#!/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) | |
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