AM67: How to set GPIO value with AM67 EVM?

Zekun Bai

Part Number: AM67

Tool/software:

We use SDK 9.2 LINUX and AM67 EVM, and use GPIO Command to set value.

Failed and log is below:

gpioset 0 38 1
am67-sk:~# gpioset 0 38 1
gpioset: invalid offset<->value mapping: 38

Use the default SDK, nothing changed. Any steps wrong or missed?

We also tried another GPIO and tried /sys/class/gpio method, but all failed.

Regards

Zekun

0 Keerthy J 23 days ago

Zekun,

First please set the corresponding Pinmux register to 0x40007 value.

- Keerthy

0 Zekun Bai 23 days ago in reply to Keerthy J

Hi Keerthy

Do SDK already configure pinmux by default?

Regards

Zekun

0 user5152479 22 days ago in reply to Keerthy J

Hi Keerthy,

how to use /sys/class/gpio/export mode?

when I echo xxx > /sys/class/gpio/export, it display:

-sh: echo: write error: Invalid argument
[ 1715.709627] export_store: invalid GPIO xxx

0 Keerthy J 16 days ago in reply to user5152479

Zekun,

Please let me know which exact GPIO you are trying to toggle.

Can you try the above FAQ?

- Keerthy

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