The pin mux setting for TI profibus PRU lib

shen ben

Other Parts Discussed in Thread: PROFIBUS

Hello:

Now I am debugging the profibus of TaiJi. The code work on TI's ICE v1.0 board but don't work on our board..

I compare the ICE v2's schematic with ours, I found a difference for profibus. The ICE v2 use pin C13 as uart RTS, when our board use D17.

My question is that is this pin used by PRU code? Could user application define that which pin can be used for RTS pin? Thank you very much

over 10 years ago

0 Biser Gatchev-XID over 10 years ago

TI__Guru**** 393215 points

Hi,

I will forward this to the Industrial SDK team.

0 Vinesh Balan over 10 years ago

TI__Expert 7360 points

Hello,

In BSP_init(am33xx_bsp.c), you can configure the pin using -

g_pL2GlobVar->PruTxGpioNum = 5; //pr1_pru0_pru_r30[5] is used as TX GPIO for PROFIBUS

This is configured to C13 pin now, and used in mode 5(PR1_PRU0_PRU_R30_5). This pin should be in mapped to pr1_pru0_pru_r30[X] where X:0 to 15

Regards,
Vinesh

0 shen ben over 10 years ago in reply to Vinesh Balan

Prodigy 70 points

Hello Mr. Vinesh

Thank you for your quick reply. So I can only map the pr1_pru0_pru_r30 pin as the RTS pin

Thank you

Best regards

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The pin mux setting for TI profibus PRU lib