diff options
Diffstat (limited to 'src/c/hardware/rasberrypi/gpio/u8RPIDigitalIns.c')
| -rw-r--r-- | src/c/hardware/rasberrypi/gpio/u8RPIDigitalIns.c | 20 |
1 files changed, 3 insertions, 17 deletions
diff --git a/src/c/hardware/rasberrypi/gpio/u8RPIDigitalIns.c b/src/c/hardware/rasberrypi/gpio/u8RPIDigitalIns.c index 8ce0b3c..d9ff093 100644 --- a/src/c/hardware/rasberrypi/gpio/u8RPIDigitalIns.c +++ b/src/c/hardware/rasberrypi/gpio/u8RPIDigitalIns.c @@ -10,29 +10,15 @@ Email: toolbox@scilab.in */ -/* Function to read the state of the gpio pin - - Calling Sequence - u8RPI_DigitalIn(pin) - - Parameters - pin : pin of RPi to be read - - Returns - state: Current state of the specified gpio pin - - Description - There are few pins available on RPi as Gpio or digital i/o. These pins can be used as digital output or input. Using this function, current state (low/high) of any gpio pin can be read. 'pin' name must be provided from list provided. Please refer '' for complete list of pins. 'state' can be 0 or 1 depending upon state of the pin (Low/High). RPI_DigitalSetup with appropriate arguments must be called before using this function. - Examples - u8RPI_DigitalIn(RPI_GPIO_P1_03,1) //Returns the state of pin 3 of header P1 -*/ +/* Function to read the state of the gpio pin */ #include "types.h" #include "RPIPeripheralDigital.h" +/*pin is reduced by one as array index starts from 0 and pin no starts from 1*/ uint8 u8RPIDigitalIns(uint8 pin) { uint8 state = 0; - state = bcm2835_gpio_lev(pin); + state = bcm2835_gpio_lev(phy_pin[pin-1]); return (state); } |