RSB-3730 Yocto4.2 UIO Test

UIO-4030 Function

Note：

Device：ttymxc0 - COM_3, ttyUSB0 - COM_4(RS-485)

Need one Adam-4520I module for RS-485.

The test method is as follows

RS-232 U-boot setting：

u-boot=> setenv uart_mode 2:0
u-boot=> saveenv
Saving Environment to MMC... Writing to MMC(2)... OK
u-boot=> reset 

RS-232（COM_3）

# stty -F /dev/ttymxc0 -echo -onlcr 115200
# cat /dev/ttymxc0 &
[1] 653
# echo "Serial Port Test" > /dev/ttymxc0
Serial Port Test

CN3_GPIO

for example：Short GPIO pin1(in) 150 & pin6(out) 141

# echo 150 > /sys/class/gpio/export
# echo 141 > /sys/class/gpio/export
# echo in > /sys/class/gpio/gpio1/direction
# echo out > /sys/class/gpio/gpio2/direction
# echo 1 > /sys/class/gpio/gpio2/value
# cat /sys/class/gpio/gpio1/value
0
# cat /sys/class/gpio/gpio2/value
1

RS-485

RS-485 U-boot Setting：

RS-485（COM4_）:

# stty -F /dev/ttyUSB0 speed 115200 ignbrk -brkint -icrnl -imaxbel -opost -onlcr -isig -icanon -iexten -echo -echoe -echok -echoctl -echoke
# cat /dev/ttyUSB0 &
# echo "Serial Test" > /dev/ttyUSB0