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Altera_Forum's avatar
Altera_Forum
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14 years ago

Read/write on Gpio real-time from uClinux?

I used pointer to access GPIOs : #define LEDs(unsigned int *)(base_addr) # define SWs (volatile unsigned int *)(base_addr) I want to use gpio for controlling my device ip. With a same code ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

How are you getting the value for 'base_address' in your linux version?

It will need to bypass the data cache.

You also need to be doing it from within a linux device driver.