User manual

7 /proc-Extensions for the KS8695 based Devices

7. /proc-Extensions for the KS8695 based Devices

In the /proc/vscom directory reside several ﬁles to manipulate the OnRISC hardware:

• epld_ttyS* - conﬁgure serial driver e.g. rs232, rs422, rs485. For exact values execute

echo /proc/vscom/epld_ttySn (n=1..4)

For detailed description see 6.4

• gpio_* - set and read digital IO channels. For detailed description see 6.1

• leds - set and read LEDs values. For detailed description see 6.3

• buzzer, buzzer_frq - conﬁgure the buzzer. For detailed description see 6.2

• reset - reboot the OnRISC. To execute the hardware reset

echo 1 > /proc/vscom/reset

Examples:

echo 1 > /proc/vscom/buzzer turn buzzer on

echo 0 > /proc/vscom/buzzer turn buzzer oﬀ

echo 0x000001f4 > /proc/vscom/buzzer_frq this will activate the buzzer for 500ms and then

deactivate it for 500ms and so on

cat /proc/vscom/leds get the current LED status

echo GREEN > /proc/vscom/leds turn the green LED on

echo green > /proc/vscom/leds turn the green LED oﬀ

echo rs422 > /proc/vscom/epld_ttyS2 sets the mode of the second port to rs422

echo 0x05 0x05 > /proc/vscom/gpio_ctrl set DIO0 and DIO2 to output

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