TMS3705: Looking for a simple example in C

Hello Gerd,

I found the following thread from 2 years ago which seems to me is the same question:

https://e2e.ti.com/support/wireless-connectivity/other-wireless/f/667/t/686465

There is meanwhile no more additional information for these devices that I can give to you. This is all that we have as examples for this configuration. A ready to work example for your setup is not available.

At first please break down this system in two parts. The first part, MSP430F6659 / TMS3705 is this working and can communicate with the TMS37157 alone, i.e. read memory? The second part would be the communication between the TM37157 and MSP430FR5730 when using the MSP Access command.

Please let me know which part of the system is not working for you.

Best regards,

Helfried

Hi Helfried,

MSP430F6659 --> TMS3705: is working

TMS3705 --> TMS35157: is working

TMS35157 --> MSP430FR5730: is also working

MSP430FR5730 --> TMS35157: Looks like (on the scope) that something is going on

TMS37157 --> TMS3705: can't see anything on the scope

TMS3705 --> MSP430F6659: Nothing on the scope nor in the code

Kind reagrds

Gerd

Hello Gerd,

from you description the problem you have seems to be the communication between the TMS37157 and the MSP430FR5730 when using the MSP Access command.

I don't know if you have this already available but I can point you to the following document and library for the SPI communication:

Using the SPI Library for TMS37157:

https://www.ti.com/lit/swra272

and the library itself:

www.ti.com/lit/zip/SWRA272

Best regards,

Helfried

Hello Helfried,

To be honest, I downloaded both documents/code more than a year ago, but never really read through them.

I'll have a look.

Thank you again and best regards

Gerd