I2C driver problem on C6747

Sergio Martins

Other Parts Discussed in Thread: TMS320C6747, OMAPL138

Hello

I'm using the I2C driver from pspdrivers_01_30_00_05 and i'm having a problem using the GIO_write/GIO_read model.

My goal is to have the i2c bus in slave mode, receiving data from the bus on a TSK with GIO_read.

I know GIO_read is a blocking call, however it remains blocked even after the i2c transmission (i see the full transmition on the data analyzer).

If i pause the code, i can see the data correctly in the buffer i passed to GIO_read.

I've also tried to send something in master mode to debug if it had to do with the slave mode, and the same occured.

(All my configurations are based on the example that is included in the PSP)

Is there any known issue?

Thanks in advance,

Sergio Martins

over 15 years ago

0 Imtiaz SMA over 15 years ago

TI__Intellectual 920 points

Hello,

The version of PSP drivers you are using is older. There is a latest version of PSP driver package available now. We had done a few fixes with respect to slave mode(STOP condition detection) in the latest version of the drivers. can you try with the latest version and let me know if you are still facing the same problem.

Thanks & Regards,

Imtiaz SMA

0 Sergio Martins over 15 years ago in reply to Imtiaz SMA

Prodigy 220 points

I've checked and the ones i'm using are the latest in the category: "For BIOS5.3x based PSP deliverables for TMS320C6747, OMAPL-137, C6748 and OMAPL138"

I'm using DSPBIOS v5.40, if i use the package that is in the "For BIOS6.xx based PSP deliverables for TMS320DA830" category will they work or should i see some higher version of the other ones?

0 Imtiaz SMA over 15 years ago in reply to Sergio Martins

TI__Intellectual 920 points

Hello,

Please find the latest GA release 01.30.00 of the PSP driver at the following location. you will need to use this package.

http://software-dl.ti.com/dsps/dsps_public_sw/sdo_sb/targetcontent/bios_psp/BIOSPSP/01_30/index_FDS.html

please note that the release 1.30.00 is the latest version compared to the 1.30.00.05.

Thanks & Regards,

Imtiaz SMA

0 Sergio Martins over 15 years ago in reply to Imtiaz SMA

Prodigy 220 points

This sounds very promising, but i don't understand how to get there...

I mean, i used the "update advisor" interface and it led me to the older ones...this is also because i wanted to know if there is a newer package for the edma3lld drivers, preferably one that has the drivers in CCS4 projects.

When i get the results from testing the i2c i'll get back to you

The drivers seem to be working fine.

I wanted to leave a note on a problem i saw with the spi drivers in DMA mode: the dma configuration is not correct, namely the "B index" is not updated according to the size of the transfer. Can you escalate the bug?

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I2C driver problem on C6747