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AM2431: How to configure PRG1_PRU0_GPO9 with sysconfig?

Kangjia Dong

Intellectual 2285 points

Part Number: AM2431
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

Customer schematic design is PRG1_PRU0_GPO9 for SD4 sampling, but the sysconfig configuration can only be configured to GPO18. How to configure directly from sysconfig to GPO9 (Note: The manual says to change one of the registers ICSSG_SA_MX_REG(7)G_MUX_EN=1, but sysconfig did not find any changes)

0 Achala Ram 8 months ago

TI__Expert 4360 points

Hi,

Which version of the SDK are you using?

If you are using the latest version, you see "Enable G mux" option in SysConfig. You need to disable it to allow selection of these pins.

Thanks & Regards,

Achala Ram

0 Achala Ram 8 months ago in reply to Achala Ram

TI__Expert 4360 points

In older versions of the SDK, the option to enable or disable SaMux mode is not present in SysConfig, so you have to do it manually:

Comment out the line in sdfm_example.c

// PRUICSS_setSaMuxMode(pruIcssHandle, saMuxMode);

configure these GPIO pins in the PRU (ICSS) SysConfig module.

Thanks & Regards,

Achala Ram

0 Kong Kuang 8 months ago in reply to Achala Ram

Intellectual 560 points

Hi Achala,

I used SDK and syscfg version is .

And I can not find "Enable G mux" and the "GP mode"

0 Achala Ram 8 months ago in reply to Kong Kuang

TI__Expert 4360 points

To disable SA mux mode in versions older than 11.0, follow the steps described in the previous response.

In sysconfig this functionality is added in version 11.0.

Thanks & regards,

Achala Ram