Problembs using SPI on TI-RTOS on Concerto (C28)

Josep Andreu Vidal

Other Parts Discussed in Thread: CONTROLSUITE

Hello, I've been trying to use the SPI in C28 with a newer version of RTOS (tirtos_1_10_00_23) that includes a package for SPI,but when I attempted to compile It said the version wasn't compatible with the platform ( F28M35H52C1 ).

After that, I have been trying to use SPI without RTOS support but using RTOS on my C28, but I haven't been able. I have been able to use it modifying the SPI loopback example using setup.c on the master subsystem ( M3 ). but when I try to use it with my own program It doesn't work.

I used the same functions to give the control to C28 subsystem and I used the same functions to configure the pins with this functionality.

Does anyone know if when SYS/BIOS start the main configurations are erased? or someone know what can be happening?.

Thanks.

Josep Andreu

over 12 years ago

0 Gautam Iyer over 12 years ago

Guru 192875 points

Hi,

I guess this doc would be helpful:

http://www.ti.com/lit/ug/spruhd4c/spruhd4c.pdf

Regards,

Gautam

0 Josep Andreu Vidal over 12 years ago in reply to Gautam Iyer

Prodigy 150 points

Hi Gautam.

Thanks again. I've been reading this document, the problem is that the SPI drivers are for the M3. C28 is incompatible with those drivers.

I tried also to use the example about SPI on C28 without OS and it is not working just using the same initialisation. Is why I thought that maybe the initialisation is erased by the launch of RTOS.

0 Gautam Iyer over 12 years ago in reply to Josep Andreu Vidal

Guru 192875 points

Hi Josep,

You mean to say that you tried to embed this code into c28 based RTOS:

C:\ti\controlSUITE\device_support\f28m35x\v201\F28M35x_examples_Control\spia_loopback\c28\spia_loopback_c28.c

and it didn't work out ???

Regards,

Gautam

0 Josep Andreu Vidal over 12 years ago in reply to Gautam Iyer

Prodigy 150 points

Yes Gautam, I mean that.

I modified this example to send data via SPI, ( I deactivated Loopback ) and It works alone, but whren I try to embed this code on a RTOS program I'm not able to make it work.

0 Gautam Iyer over 12 years ago in reply to Josep Andreu Vidal

Guru 192875 points

Ok, so now you feel that RTOS is over-riding the SPI communication. I just checked your previous post too... Also what I'm able to infer from all the info on this is; TI has mentioned SPI communication for RTOS only with M3 and there's no mentioning of C28. In other words there seems to be no support for such a configuration or not compatible! Clear cut note :

Available for: TMDXDOCKH52C1 (M3)

Regards,

Gautam

0 Gautam Iyer over 12 years ago in reply to Josep Andreu Vidal

Guru 192875 points

Hi,

According to the documentation RTOS based SPI communication is supposed to be for M3 and there's no mention of C28. I guess such kind of configuration is not compatible.

Regards,

Gautam

0 Josep Andreu Vidal over 12 years ago in reply to Gautam Iyer

Prodigy 150 points

Ok thankyou Gautam I will look for a solution

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Problembs using SPI on TI-RTOS on Concerto (C28)