Using SPI to decode DMX-protocol

bleumers_j · ‎2003-06-17

Posted on June 17, 2003 at 11:01

bleumers_j · ‎2003-06-16

Posted on June 16, 2003 at 12:27

Hello,

I'm trying to generate code to decode DMX, a serial protocol.

I can find several examples for PIC's which use the on-board UART.

ST7lite hasn't got a UART, but only an SPI-module.

Is it possible to do Asynchronous communication with an ST7lite?

(I need the ST7lite because of the 4 PWM-out's)

Thanks...

[ This message was edited by: joble on 16-06-2003 16:00 ]

bleumers_j · ‎2003-06-16

Posted on June 17, 2003 at 05:10

Hello again,

I found an ST6 application note about an SPI used as a UART and I'm reading it now. Would it be possible to do the same thing on the ST7lite.

By doing this i do not need to add an expensive MAX3100 (UART with SPI-interface)

Greets...

stephanie · ‎2003-06-16

Posted on June 17, 2003 at 08:02

An application note providing a software UART (SCI) driver for lite devices is under writing and will be soon available!

bleumers_j · ‎2003-06-17

Posted on June 17, 2003 at 11:01

Hi,

This is very good news!!!

Have you got an idea of when this app note will be released?

I hope this software UART will be able to receive DMX (250kBaud!).

Greets...