Spartan 3 OEM communication with serial

OEM Modules
1

I’m probably doing something wrong here, dont shoot me (yet)

I’m trying to communicate through Termite with the OEM module.

Connected the TX and RX to DB9 2 and 3
Power up with and without the heater ground connected
Termite Settings as per manual

I do get some weird data back, but nothing usefull.

What am I missing, I want to change CAN ids so i can use multiple in parallel.
USB-serial cable has a prolific driver, chipset unknown to me.

2

Can you post a picture or link of the USB serial cable you are using?

3

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171843737027242537223520134030551920×2560 347 KB

The one I’m pointing to has a prolific driver installed

4

You need something like this, Amazon.com

5

I have said cable, wired the Rx an Tx to the corresponding pins of the cable, no comms to termite. Sorry for the hassle, but a document about this would be nice.

1 Like
6

3 connections must be made, TX, RX, and ground (use the same ground as the Spartan 3 electronics ground)

If it still does not work then swap Rx and Tx and try again.

7

With garbled output I always check serial cable ground (as Alan mentioned) and baud rate. It’s usually from bad baud rate. Make sure you’re running 9600 8-N-1.

8

Thanks for the replies and info
It worked, had to reverse the Rx/Tx and hook up the electronics ground to the TTL adapter.

Much appreciated

9

Hi Alan. On the Spartan 3 Lite OEM, sending new ASCII commands must be done in the bootloader? With the Flasher software?.. Can you enlighten me on this subject please? Thanks.