diff options
Diffstat (limited to 'src/c/hardware/rasberrypi/gpio/u8RPIDigitalIns.c')
-rw-r--r-- | src/c/hardware/rasberrypi/gpio/u8RPIDigitalIns.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/c/hardware/rasberrypi/gpio/u8RPIDigitalIns.c b/src/c/hardware/rasberrypi/gpio/u8RPIDigitalIns.c new file mode 100644 index 0000000..6f06558 --- /dev/null +++ b/src/c/hardware/rasberrypi/gpio/u8RPIDigitalIns.c @@ -0,0 +1,30 @@ +// 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 +// +// +// Authors +// Siddhesh Wani +// + +#include "types.h" +#include "RPIPeripheralDigital.h" + +uint8 u8RPIDigitalIns(uint8 pin) +{ + uint8 state = 0; + state = bcm2835_gpio_lev(pin); + return (state); +} |