Discussion between tlfong01 and Adrian Maire

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6:43 AM

I have finalized the last version of HC03 x 1 based Half Duplex LX-824HV adaptor board. The program listing is given below.

# srv_util_01_v164.py
# LX-824HV Testing v1.4  tlfong01 2020sep20hkt1159

# Contents

# Serial UART LoopBack Program v0.62 (Minimal)
# Serial UART LoopBack Program v0.98 (Multiple ports USB and on board UYART Ports)
# HiWonder serial bus servo LX-824HV LewanSoul command testing (2020sep15)

# Serial UART LoopBack Program v0.99 - penzu.com/p/f2cb232e
# serial_loopback_test_v062.py tlfong01 2020jun03hkt1447
# Rpi4B buster (r2020feb13), python 3.7.3 (r2019dec20), thonny v3.2.7 (r2020jan22)

Buggy HC03 based adaptor. Like the first version of using TXS0104, there is still intermittent reading errors as shown below:

bytes read = b'UU\x01\x03\x1b\xe0UU\x01\x05***x1bJ\x14***\x80'

The Vin value of two bytes \x1b\x14 has a random character "J" or other random characters after the first byte.

tlfong01

7:08 AM