[WP7605][Kernel] How to make ioctl() exe program to check 8-wire UART in CN600 of mangOH Green

Legato Linux distribution (Yocto project)
1

Back Ground:

Regarding to the above topic, we would like to check this 8-wire UART function by using CN600 in mangOH GREEN board.
First of all, we’re not sure how to create exe program to check 8-wire UART operation via CN600.

Question:
Could you please provide any advise how to check 8-wire UART operation via CN600 in mangOH GREEN?
If we should create new source code that executed ioctl(), we would like to know the detail of C source and Adef code.

Best Regards,

— Hiroki

2

You can control the DTR/DCD/DSR like the following:

//DTR
echo 101 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio101/direction
echo 1 > /sys/class/gpio/gpio101/value

//DCD
echo 102 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio102/direction
echo 1 > /sys/class/gpio/gpio102/value

//DSR
echo 103 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio103/direction
echo 1 > /sys/class/gpio/gpio103/value

//setting DTR/DCD/DSR to low
echo 0 > /sys/class/gpio/gpio101/value
echo 0 > /sys/class/gpio/gpio102/value
echo 0 > /sys/class/gpio/gpio103/value

You can use multimeter to verify on cn600.

3

Hi, jyijyi

Thank you for the answering, I confirmed it about GPIO control.

Next, I would like to check whether 8-wire UART1 can be worked by ioctl(), instead of GPIO control.
So could you please advise the way to test ioctl()?

4

Please contact FAE for the test build with fix of ioctl().