ODROID Expansion Board
Expansion Board
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Schematics http://dn.odroid.com/ODROID-XU/Expansion_Board/ExpansionBoard.pdf Software Driver source code https://github.com/hardkernel/linux/tree/odroidxu-3.4.y/drivers/hardkernel Android Example source code http://dn.odroid.com/ODROID-XU/Expansion_Board/ Driver access SPI Misc device driver Device node : /dev/ioboard-spi-misc Refer device/hardkernel/ioboard-spi.h source to read/write/erase the SPI Flash memory. LED & KEY /sys/devices/platform/ioboard-keyled/ board_test : Default value is 1 and test mode. If this is 0, change to normal mode to read/write. led1 ~ led5: write only. Chnage the LED state (1 : on, 0 : off) sw1 ~ sw4: read only. Read the state of switch. (1 : pressed, 0 : released) To read the Switch state, must use the polling method. (interrupt feature is not implemented) ADC /sys/devices/platform/ioboard-adc/ enable : on/off (read/write) value : ADC raw value (0~4095) voltage : 0V ~ 1800mV Ambient Light senor (Software driven bit-bang I2C) /sys/devices/platform/i2c-gpio.10/i2c-10/10-0029 enable : on/off (read/write) lux : sensor value in Luix (0 ~ 65535 lux) Pressure sensor/temperature sensor (Software driven bit-bang I2C) /sys/devices/platform/i2c-gpio.10/i2c-10/10-0077 enable : on/off (read/write) pressure : atomospheric pressure, pa unit. (ex)101614(pa) = 1016.14hpa temperature : 10 times.... (ex) 195 = 19.5C | ||
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