loosing byte at uart receiving

gerald2399 · ‎2009-08-24

Posted on August 25, 2009 at 08:46

gerald2399 · ‎2011-05-17

Posted on May 17, 2011 at 15:04

Hello,

I'm using a STM8S105S6 with a UART communication. Baudrate is 9600. If I send a data stream to my controller from PC and every data byte of my stream is incremented by one, everything works well. I can receive all the 117 bytes of the data stream.

If I try to send a data stream with almost all bytes are 0x00, a lot of bytes of my datastream are not received by my controller. (about 20 bytes are missing).

Does anybody know the reason for that?

Thank you for help!

gb

mozra27 · ‎2011-05-17

Posted on May 17, 2011 at 15:04

Hi Gerald,

What are the receiver type (Controller) and the toolchaine (IDE+Compiler)used in your application?

Can you please check the same test without optimization?

Thank you to keep us informed by the test result.

Regards

mozra

gerald2399 · ‎2011-05-17

Posted on May 17, 2011 at 15:04

Hi,

I'm using the ST Visual Develop V4.1.2.

Help window:

STVD MainFrame Version 3.6.3.1 - Build May 6 2009

stvabbld.dll, Version: 1.3.3.0

stv7abbld.dll, Version: 1.4.2.0

STVD_TxtEditor.dll, Version: 1.0.2.5

addonide.ini, Version: Rel 4.0, Date: 19 February 2008

ProgrammerAddOn.dll, Version: 1.3.0.1

st7expor.dll, Version: 3.3.2.1

The toolchain is Raisonance. I use Rlink and our target board.

With default optimazation (no optimazation) even more bytes are missing (about 50).

The device is STM8S105S6 Uart_2.

I hope this inforamtion helps.

Thank you

gb