I2C with EDMA on AM1808

Nagi Reddy chitta

Prodigy 220 points

Other Parts Discussed in Thread: AM1808, OMAPL138

Hi E2E Community,

We would like to integrate EDMA with I2C on AM1808 board to increase the data speed.

If anyone has already done this driver code integration for Linux, kindly share with me.

Best Regards,

Nagi

over 10 years ago

0 Biser Gatchev-XID over 10 years ago

TI__Guru**** 393215 points

Moving this to the AM1x forum.

0 Titusrathinaraj Stalin over 10 years ago

TI__Guru** 116100 points

Hi Nagi,

You can refer to our starterware I2C EDMA driver and try to use it with Linux driver APIs.

C:\ti\OMAPL138_StarterWare_1_10_04_01\examples\evmOMAPL138\i2c_edma

I hope this helps.

0 Abhijit Naik3 over 10 years ago in reply to Titusrathinaraj Stalin

Intellectual 400 points

Hello Nagi,

Can you please let me know whether you were able to get the I2C driver working with EDMA? Because we are facing some problem when we are trying to do this. We are using Linux kernel(3.6.33) that came with SDC8108.

0 Nagi Reddy chitta over 10 years ago in reply to Abhijit Naik3

Prodigy 220 points

Hi Abhijit,
I was moved out from this activity temporarily to a different activity, hence could not try it out yet. Will let you know once i resume I2C EDMA activity.

Regards,
Nagi

0 Titusrathinaraj Stalin over 10 years ago in reply to Nagi Reddy chitta

TI__Guru** 116100 points

Hi Both,
You can refer to the following TI wiki page for Linux EDMA implementation and you can change it for I2C.
processors.wiki.ti.com/.../EDMA_sample_test_application

0 Nagi Reddy chitta over 10 years ago in reply to Titusrathinaraj Stalin

Prodigy 220 points

Hi Titus,
I have already used this sample test application to write my own app to transfer data between two memory locations using EDMA link and chain feature. What we are trying now is integrating I2C with EDMA.
i have tried to see "OMAPL138_StarterWare_1_10_04_01\examples\evmOMAPL138\i2c_edma" link but this link is not working.
Can you pls let me know if there is any other link i can try?

Best Regards,
Nagi

0 Titusrathinaraj Stalin over 10 years ago in reply to Nagi Reddy chitta

TI__Guru** 116100 points

Hi,
Did you install OMAPL138 starterware package ?

software-dl.ti.com/.../index_FDS.html

You can get the exact example code in the following link.
C:\ti\OMAPL138_StarterWare_1_10_04_01\examples\evmOMAPL138\i2c_edma\i2cEdma.c

The following link is used to import as CCS project in CCS IDE.
C:\ti\OMAPL138_StarterWare_1_10_04_01\build\armv5\cgt_ccs\omapl138\evmOMAPL138\i2c_edma

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I2C with EDMA on AM1808