how to control GPIO in Android application?

zamster · Posted at 9/7/2015 09:34:29

Hi,
I want to create android application that is able to control GPIO, LED, Serial port.
I've searched a lot but can't get enough good answer.

I know it uses JNI interface in android app, but do now know in driver side.

would you give me effective example?

thanks
Jay

zamster · Posted at 9/9/2015 10:09:42

thanks for your reply.

would you give me more explanation?
how can I access UART serial by using TX, RX, GRD?
I need a specific guide or code..

zamster · Posted at 9/11/2015 16:27:33

busybee Posted at 9/11/2015 10:33
First refer to the uart driver wiki:
http://wiki.t-firefly.com/index.php/Firefly-RK3288/UART/en
...

thanks.

one more question.
Do I have to make new uart driver for uart communications?
(if I'm using uart3 I can just access /dev/ttyS3 without making new uart driver..)

zamster · Posted at 9/11/2015 17:59:56

Last edited by zamster In 9/11/2015 18:23 Editor

in the middle of page (http://wiki.t-firefly.com/index.php/Firefly-RK3288/UART/en),
what is meaning of "Turn on CONFIG_SERIAL_ROCKCHIP in kernel configuration"?

Compile and Flash KernelTurn on CONFIG_SERIAL_ROCKCHIP in kernel configuration, which will add corresponding drivers/tty/serial/rk_serial.c to kernel. Then compile the kernel as followed:
make firefly-rk3288.img