gpio_keyd
gpio_keyd is a maaping program between GPIO and key inputs by uinput. gpio_keyd needs wiringPi library in order to control GPIO.
Installation
$ git clone https://github.com/hardkernel/wiringPi.git
$ cd wiringPi
$ sudo ./build
$ cd
$ git clone https://github.com/bkrepo/gpio_keyd.git
$ cd gpio_keyd
$ make
$ sudo make install
Usage
Usage: gpio_keyd [option]
Options:
-c <config file> set the configuration file (default: "/etc/gpio_keyd.conf")
-i <polling interval> set polling interval time (default: 10000 us)
-d run as deamon
-h help
Configuration
gpio_keyd uses the configuration file which is including the GPIO-key mapping information. GPIO pin means the wiringPi GPIO pin number. Digital GPIO can configure 'active high' or 'active low' by 'Active value'
gpio_keyd also support analog GPIO input. Analog GPIO only works with 'active low'.
- (Example: /etc/gpio_keyd.conf)
# Digital input
# <Key code> <GPIO type> <GPIO pin> <Active value>
KEY_LEFT digital 1 0
KEY_RIGHT digital 4 0
KEY_UP digital 16 0
KEY_DOWN digital 15 0
KEY_ENTER digital 23 0
KEY_ESC digital 22 0
KEY_A digital 31 0
KEY_B digital 11 0
KEY_C digital 10 0
KEY_D digital 6 0
# Analog input
# <Key code> <GPIO type> <ADC port> <ADC active value>
KEY_E analog 0 0
KEY_F analog 0 2045
KEY_G analog 1 0
KEY_H analog 1 2045
