diff options
Diffstat (limited to '2.3-1/src/c/hardware/avr/gpio')
| -rw-r--r-- | 2.3-1/src/c/hardware/avr/gpio/u8AVRDigitalIns.c | 54 | ||||
| -rw-r--r-- | 2.3-1/src/c/hardware/avr/gpio/u8AVRDigitalOuts.c | 69 | ||||
| -rw-r--r-- | 2.3-1/src/c/hardware/avr/gpio/u8AVRDigitalSetups.c | 71 |
3 files changed, 194 insertions, 0 deletions
diff --git a/2.3-1/src/c/hardware/avr/gpio/u8AVRDigitalIns.c b/2.3-1/src/c/hardware/avr/gpio/u8AVRDigitalIns.c new file mode 100644 index 00000000..6b61a56b --- /dev/null +++ b/2.3-1/src/c/hardware/avr/gpio/u8AVRDigitalIns.c @@ -0,0 +1,54 @@ +// Function to get current state (high\low) of a digital pin on AVR +// +// Calling Sequence +// u8AVRDigitalIns(port,pin) +// +// Parameters +// port : port of microcontroller to be used (1 for PORTA, 2 for PORTB,...) +// pin : pin of port (mentioned above) to be used +// Returns-> +// state : state of the pin (0 for low and 1 for high) +// +// Description +// Each AVR microcontroller has pins which can be configured as digital +// outputs. These are normally divided among some 'ports' (group of pins). +// User has to select one of these port and which pin of that port is to +// be read. Function returns current state of the pin '1' (high) or '0' (low). +// +// +// Examples +// state = u8AVRDigitalIns(1,0) +// +// Authors +// Siddhesh Wani +// + + +#include "AVRPeripheralGPIO.h" + +uint8 u8AVRDigitalIns(uint8 port,uint8 pin) +{ + uint8 state = 0; + if(port == PORT_A) + { + state = (uint8)(PINA & (1<<pin)); + return state; + } + if(port == PORT_B) + { + state = (uint8)(PINB & (1<<pin)); + return state; + } + if(port == PORT_C) + { + state = (uint8)(PINC & (1<<pin)); + return state; + } + if(port == PORT_D) + { + state = (uint8)(PIND & (1<<pin)); + return state; + } + +//return state; +} diff --git a/2.3-1/src/c/hardware/avr/gpio/u8AVRDigitalOuts.c b/2.3-1/src/c/hardware/avr/gpio/u8AVRDigitalOuts.c new file mode 100644 index 00000000..5ee84a80 --- /dev/null +++ b/2.3-1/src/c/hardware/avr/gpio/u8AVRDigitalOuts.c @@ -0,0 +1,69 @@ +// Function to change state (high\low) of a digital output pin on AVR +// +// Calling Sequence +// u8AVRDigitalOuts(port,pin,state) +// +// Parameters +// port : port of microcontroller to be used (1 for PORTA, 2 for PORTB,...) +// pin : pin of port (mentioned above) to be used +// state : state to be outputed on pin (0 for low and 1 for high) +// +// Description +// Each AVR microcontroller has pins which can be configured as digital +// outputs. These are normally divided among some 'ports' (group of pins). +// User has to select one of these port and which pin of that port as +// digital output. Also, desired output state must be specified as +// '1' (high) or '0' (low). +// +// Examples +// u8AVRDigitalOuts(1,0,1) +// +// Authors +// Siddhesh Wani +// + + +#include "AVRPeripheralGPIO.h" + +uint8 u8AVRDigitalOuts(uint8 port,uint8 pin,uint8 state) +{ + if(state == LOW) + {/*Make output pin high*/ + if(port == PORT_A) + { + PORTA = PORTA & ~(1<<pin); + } + if(port == PORT_B) + { + PORTB = PORTB & ~(1<<pin); + } + if(port == PORT_C) + { + PORTC = PORTC & ~(1<<pin); + } + if(port == PORT_D) + { + PORTD = PORTD & ~(1<<pin); + } + } + else + {/*Make output pin high*/ + if(port == PORT_A) + { + PORTA = PORTA | (1<<pin); + } + if(port == PORT_B) + { + PORTB = PORTB | (1<<pin); + } + if(port == PORT_C) + { + PORTC = PORTC | (1<<pin); + } + if(port == PORT_D) + { + PORTD = PORTD | (1<<pin); + } + } +return 0; +} diff --git a/2.3-1/src/c/hardware/avr/gpio/u8AVRDigitalSetups.c b/2.3-1/src/c/hardware/avr/gpio/u8AVRDigitalSetups.c new file mode 100644 index 00000000..46697f70 --- /dev/null +++ b/2.3-1/src/c/hardware/avr/gpio/u8AVRDigitalSetups.c @@ -0,0 +1,71 @@ +// Function to decide direction of a digital pin on AVR +// +// Calling Sequence +// AVRDigitalSetup(port,pin,direction) +// +// Parameters +// port : port of microcontroller to be used (1 for PORTA, 2 for PORTB,...) +// pin : pin of port (mentioned above) to be used +// direction : direction to be set for pin (0 for input, 1 for output) +// +// Description +// Each AVR microcontroller has pins which can be configured as digital +// outputs/inputs. These are normally divided among some 'ports' (group of pins). +// User has to select one of these port and which pin of that port to be +// used as digital output/input. Also, desired direction must be specified as +// 'INPUT' or 'OUTPUT'. +// +// Examples +// AVRDigitalSetup(1,0,1) +// +// Authors +// Siddhesh Wani +// + +#include "AVRPeripheralGPIO.h" + + +uint8 u8AVRDigitalSetups(uint8 port,uint8 pin,uint8 direction) +{ + + if (direction == INPUT) + {/*Set pin as input*/ + if(port == PORT_A) + { + DDRA = DDRA & ~(1<<pin); + } + if(port == PORT_B) + { + DDRB = DDRB & ~(1<<pin); + } + if(port == PORT_C) + { + DDRC = DDRC & ~(1<<pin); + } + if(port == PORT_D) + { + DDRD = DDRD & ~(1<<pin); + } + } + else + {/*Set pin as output*/ + if(port == PORT_A) + { + DDRA = DDRA | (1<<pin); + } + if(port == PORT_B) + { + DDRB = DDRB | (1<<pin); + } + if(port == PORT_C) + { + DDRC = DDRC | (1<<pin); + } + if(port == PORT_D) + { + DDRD = DDRD | (1<<pin); + } + } +return 0; +} + |