topic Re: API in i.MX Processors

API

Bill_Bracken — Mon, 12 Sep 2011 04:29:18 GMT

I give. Where is the "API" describing how to access the various peripherals of the MX53?

Re: API

daiane_angolini — Mon, 12 Sep 2011 18:00:59 GMT

I don´t understand your question. Can you, please, make yourself clearer?

Do you know unit_test?

Re: API

Bill_Bracken — Mon, 12 Sep 2011 20:02:46 GMT

Daiane,

Thanks for responding. The i.MX53 for example has GPIO (General Purpose I/O). Does the Ubuntu developement environment provided by FreeScale have drivers, or an API, for the GPIO? In general, you need functions to determine the direction of the I/O (input, output, tri-state), set the I/O, clear the I/O and get the current state of the I/O. Again, does FreeScale provide software to support the GPIO... as well as other peripherlas like CSPI, PWM ... etc.

Re: API

fabio_estevam — Tue, 13 Sep 2011 01:41:31 GMT

In order to access GPIO you can follow the kernel GPIO sysfs method that I posted here:

http://forums.freescale.com/t5/i-MX-Microprocessors/iMX28-SYSFS-and-GPIO/td-p/60938

For other peripherals I suggest to take a look at the Linux Reference manual that comes with the BSP documents.

Regards,

Fabio Estevam