GPIO

saadia

I want to know how do I write to GIO pins registers?

There is this folder /pro/gio, where all the gio pins are listed. But hpw to write to them directly from there or somewhere else.?

over 17 years ago

Juan Gonzales over 17 years ago

TI__Mastermind 37340 points

There is a gpio driver provided under the Linux Kernel source tree

.../ti-davinci/arch/arm/mach-davinci/gpio.c

There is sample source code on how to write to gpio registers there.

saadia over 17 years ago in reply to Juan Gonzales

Intellectual 640 points

Is there a possiblity of ADC on GPIO pins?

Bernie Thompson TI over 17 years ago in reply to saadia

TI__Mastermind 41665 points

What do you mean by ADC on GPIO pins? The GPIO pins are binary on their own, though if you had an external ADC you could use GPIO to interface with it.

Juan Gonzales over 17 years ago in reply to saadia

TI__Mastermind 37340 points

Do you mean analog-to-digital converter (ADC)? If so, please note that GPIO pins are in the digital domain only. If you have an analog signal, you will have to converted to digital signal with the characteristics specified in the DM355 data-sheet before feeding it into GPIO pin.

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