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Gateworks Linux Example Test Commands
Following is a list of commands that are available in the BSP from Gateworks that can be used in order to test the functionality of the product. Users can use these commands to further the functionality of there application.
PCI
See also:
Find available devices on the PCI Bus
lspci -v
USB
Find available devices on the USB Bus
lsusb -v
RTC
Read Time from RTC
hwclock -r
Write current Time to RTC
hwclock -w
HWMON
Read Voltage
Different voltages can be read from the board, just change in0 to any of in0 - in12
The voltages read are current voltage * 1000
cat /sys/class/hwmon/hwmon0/device/in0_label cat /sys/class/hwmon/hwmon0/device/in0_input
Read Temperature
The temp read is current temp * 10
cat /sys/class/hwmon/hwmon0/device/temp0_input
Set Fan Setpoint
The fan controller has 5 setpoints ranging from 50% on to 100% on, corresponding with fan0_point0 (50%) to fan0_poing5 (100%)
Read Current Setpoint
The setpoint read is current setpoint * 10
cat /sys/class/hwmon/hwmon0/device/fan0_point0
Write new Setpoint
Value to write is new temperatore * 10
echo 450 > /sys/class/hwmon/hwmon0/device/fan0_point0
GPIO
See also:
Read GPIO
See a list of currentl used GPIO's:
cat /sys/kernel/debug/gpio
Export A GPIO for user control
echo 8 > /sys/class/gpio/export # export gpio 8 which will get configured as an input
Set Direction of GPIO
echo out > /sys/class/gpio/gpio8/value # make gpio8 an output echo in > /sys/class/gpio/gpio8/value # make gpio8 an input
Set Output of GPIO
echo 0 > /sys/class/gpio/gpio8/value # set gpio8 to logic low echo 1 > /sys/class/gpio/gpio8/value # set gpio8 to logic high
Check GPIO
cat /sys/kernel/debug/gpio # see all gpio's cat /sys/class/gpio/gpio8/value # see state of gpio8
I2C
See also:
Detect all available i2c devices
i2cdetect -f -y 0
Read i2c address
Where "x" is the device id, and "y" is the wanted address
i2cget -f -y 0 x y
Write i2c Address
Where "x" is the device id, and "y" is the wanted address to write and "z" is the value to write
i2cset -f -y 0 x y z
Kernel Modules
See also:
Find modules loaded by kernel
lsmod
