[Gambas-user] Serial port (gb.net) curious error - reading byte value incorrectly.

[Anthony Ivan]

Hello to All,

[Gambas 2.19.0-1 on Fedora 12, Intel X86_64]

I am currently working on a little project that communicates with a VHF 
radio via the MAP27 instruction set. All is working perfectly except for 
one small error... as detailed below...

When the radio communicates with the PC the serialport_read() triggers 
perfectly and takes the byte's of data provided and places them into a 
queue for processing ... a typical translated incoming hex string may 
look something like:
16 10 02 04 01 00 00 10 03

The next message will increment the 5th byte value by one thus giving:
16 10 02 04 02 00 00 10 03

Oddly enough if the value coming to the serial port from the radio is 1D 
(binary value 00011101), Gambas seems to see that value as 1A (binary 
value 00011010).
Every other input is working perfectly... and there is absolute 
certainty that the incoming byte value is indeed 1D. Also, the outbound 
side is ok... if I reply to the radio as if it had sent a 1D with the 
appropriate CRC16 checksum everything is happy. Could this be a small 
error in the serial code (gb.Net) that someone has encountered or rather 
a known issue elsewhere which I have not yet found in my searches?

Thanks,

Anthony