diff options
Diffstat (limited to '2.3-1/src/c/hardware/avr')
| -rw-r--r-- | 2.3-1/src/c/hardware/avr/adc/u8AVRADCSetups.c | 42 | ||||
| -rw-r--r-- | 2.3-1/src/c/hardware/avr/adc/u8AVRReadADCs.c | 46 | ||||
| -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 | ||||
| -rw-r--r-- | 2.3-1/src/c/hardware/avr/includes/AVRPeripheralADC.h | 27 | ||||
| -rw-r--r-- | 2.3-1/src/c/hardware/avr/includes/AVRPeripheralGPIO.h | 45 | ||||
| -rw-r--r-- | 2.3-1/src/c/hardware/avr/interfaces/int_AVRPeripheralADC.h | 26 | ||||
| -rw-r--r-- | 2.3-1/src/c/hardware/avr/interfaces/int_AVRPeripheralGPIO.h | 30 |
9 files changed, 410 insertions, 0 deletions
diff --git a/2.3-1/src/c/hardware/avr/adc/u8AVRADCSetups.c b/2.3-1/src/c/hardware/avr/adc/u8AVRADCSetups.c new file mode 100644 index 00000000..620f80fe --- /dev/null +++ b/2.3-1/src/c/hardware/avr/adc/u8AVRADCSetups.c @@ -0,0 +1,42 @@ +// Function to initialise ADC of AVR +// +// Calling Sequence +// AVRSetupADC(uint8 prescalar, uint8 adc_ref) +// +// Parameters +// prescalar: prescalar to be used for generating ADC clock (0-7) +// adc_ref : reference voltage to be used for ADC conversion +// 0 -> Voltage on VREF pin +// 1 -> Voltage on AVCC pin +// 2 -> Internal 2.56 reference voltage +// +// Description +// This function initialises ADc of AVR with given parameters. 'prescalar' is +// needed for deciding ADC clock. ADC clock should be between 50KHz and 200KHz +// and it given as (MCU clock/2^prescalar). Select appropriate prescalar depending +// on MCU clock. 'adc_ref' selects one of the available reference voltage sources +// available +// Examples +// AVRADCSetup(128,0) +// +// Authors +// Siddhesh Wani +// + +#include "AVRPeripheralADC.h" + + +uint8 u8AVRADCSetups(uint8 prescalar, uint8 adc_ref) +{ + /*Set the prescalar value*/ + ADCSRA |= (prescalar & 0x07); + + /*Set the adc reference voltage*/ + ADMUX |= ((adc_ref & 0x03) << 6); + + /*Enable ADC hardware. Set ADEN bit*/ + ADCSRA |= (1<<7); + + return 0; +} + diff --git a/2.3-1/src/c/hardware/avr/adc/u8AVRReadADCs.c b/2.3-1/src/c/hardware/avr/adc/u8AVRReadADCs.c new file mode 100644 index 00000000..71fe1363 --- /dev/null +++ b/2.3-1/src/c/hardware/avr/adc/u8AVRReadADCs.c @@ -0,0 +1,46 @@ +// Function to get voltage on analog pin on AVR +// +// Calling Sequence +// u8AVRReadADCs(channel) +// +// Parameters +// channel : Select which channel is to be read. Values from 0-7 select one +// of the pins ADC0-ADC7. For other possible channel values refer +// datasheet +// Returns-> +// result : Digital value for the voltage present on channel selected +// +// Description +// This function returns digital value for present on adc pins. 'channel' +// selects which of the ADC0-ADC7 is to be used for reading analog value. +// Apart from reading just ADC0-ADC7 other it can also read differential +// voltages between some pins. For channel values for those options, please +// refer datasheet. +// +// Examples +// adc_result = u8AVRReadADC(0) //Read ADC0 +// +// Authors +// Siddhesh Wani +// + + +#include "AVRPeripheralADC.h" + +uint16 u8AVRReadADCs(uint8 channel) +{ + /*Set ADC conversion channel*/ + ADMUX |= (channel & 0x1F); + + /*Start ADC conversion. Set 'ADSC' bit*/ + ADCSRA |= (1<<6); + + /*Wait for conversion to complete. Check 'ADIF' bit*/ + while(!(ADCSRA & (1<<4))); + + /*Clear ADIF flag*/ + ADCSRA |= (1<<4); + + /*ADC conversion result is stored in ADCH/L registers*/ + return (ADC); +} 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; +} + diff --git a/2.3-1/src/c/hardware/avr/includes/AVRPeripheralADC.h b/2.3-1/src/c/hardware/avr/includes/AVRPeripheralADC.h new file mode 100644 index 00000000..e343de63 --- /dev/null +++ b/2.3-1/src/c/hardware/avr/includes/AVRPeripheralADC.h @@ -0,0 +1,27 @@ +//This file defines constants corresponding to gpios and digital input functions. +// +// Authors +// Siddhesh Wani +// + +#ifndef __AVRPERIPHERALADC_H__ +#define __AVRPERIPHERALADC_H__ + +#include <avr/io.h> +#include "types.h" + +#ifdef __cplusplus +extern "C" { +#endif + +//Function prototypes +uint8 u8AVRADCSetups(uint8 prescalar, uint8 adc_ref); + +uint16 u8AVRReadADCs(uint8 channel); + + +#ifdef __cplusplus +} /* extern "C" */ +#endif + +#endif /* !__AVRPERIPHERALGPIO_H__ */ diff --git a/2.3-1/src/c/hardware/avr/includes/AVRPeripheralGPIO.h b/2.3-1/src/c/hardware/avr/includes/AVRPeripheralGPIO.h new file mode 100644 index 00000000..ddbeb2d8 --- /dev/null +++ b/2.3-1/src/c/hardware/avr/includes/AVRPeripheralGPIO.h @@ -0,0 +1,45 @@ +//This file defines constants corresponding to gpios and digital input functions. +// +// Authors +// Siddhesh Wani +// + +#ifndef __AVRPERIPHERALGPIO_H__ +#define __AVRPERIPHERALGPIO_H__ + +#include <avr/io.h> + +#ifdef __cplusplus +extern "C" { +#endif + + +#include <avr/io.h> +#include "types.h" + +//Port definitions +#define PORT_A 1 +#define PORT_B 2 +#define PORT_C 3 +#define PORT_D 4 + +//Direction definitions +#define INPUT 0 +#define OUTPUT 1 + +//Pin state definitions +#define LOW 0 +#define HIGH 1 + +//Function prototypes +uint8 u8AVRDigitalSetups(uint8 port,uint8 pin,uint8 direction); + +uint8 u8AVRDigitalIns(uint8 port,uint8 pin); + +uint8 u8AVRDigitalOuts(uint8 port,uint8 pin,uint8 state); + +#ifdef __cplusplus +} /* extern "C" */ +#endif + +#endif /* !__AVRPERIPHERALGPIO_H__ */ diff --git a/2.3-1/src/c/hardware/avr/interfaces/int_AVRPeripheralADC.h b/2.3-1/src/c/hardware/avr/interfaces/int_AVRPeripheralADC.h new file mode 100644 index 00000000..073f8a0c --- /dev/null +++ b/2.3-1/src/c/hardware/avr/interfaces/int_AVRPeripheralADC.h @@ -0,0 +1,26 @@ +//This file defines constants corresponding to gpios. +// +// Authors +// Siddhesh Wani +// + +#ifndef __INT_AVRPERIPHERALADC_H__ +#define __INT_AVRPERIPHERALADC_H__ + +#include <avr/io.h> +#include "AVRPeripheralADC.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define d0d0AVRDigitalSetupu80(in1,in2) u8AVRADCSetups((uint8) in1,\ + (uint8) in2); + +#define d0AVRDigitalOutu160(in1) u8AVRReadADC((uint8) in1); + +#ifdef __cplusplus +} /* extern "C" */ +#endif + +#endif /* !__AVRPERIPHERALADC_H__ */ diff --git a/2.3-1/src/c/hardware/avr/interfaces/int_AVRPeripheralGPIO.h b/2.3-1/src/c/hardware/avr/interfaces/int_AVRPeripheralGPIO.h new file mode 100644 index 00000000..88e4c635 --- /dev/null +++ b/2.3-1/src/c/hardware/avr/interfaces/int_AVRPeripheralGPIO.h @@ -0,0 +1,30 @@ +//This file defines constants corresponding to gpios. +// +// Authors +// Siddhesh Wani +// + +#ifndef __INT_AVRPERIPHERALGPIO_H__ +#define __INT_AVRPERIPHERALGPIO_H__ + +#include <avr/io.h> +#include "AVRPeripheralGPIO.h" + +#ifdef __cplusplus +extern "C" { +#endif + +#define d0d0d0AVRDigitalSetupu80(in1,in2,in3) u8AVRDigitalSetups((uint8) in1,\ + (uint8) in2, (uint8) in3); + +#define d0d0AVRDigitalOutu80(in1,in2) u8AVRDigitalIns((uint8) in1,\ + (uint8) in2); + +#define d0d0d0AVRDigitalOutu80(in1,in2,in3) u8AVRDigitalOuts((uint8) in1,\ + (uint8) in2, (uint8) in3); + +#ifdef __cplusplus +} /* extern "C" */ +#endif + +#endif /* !__AVRPERIPHERALGPIO_H__ */ |