diff options
Diffstat (limited to '2.3-1/src/c/hardware/avr/timer')
| -rw-r--r-- | 2.3-1/src/c/hardware/avr/timer/u16AVRGetTimerValues.c | 51 | ||||
| -rw-r--r-- | 2.3-1/src/c/hardware/avr/timer/u8AVRGetTimerValues.c | 63 | ||||
| -rw-r--r-- | 2.3-1/src/c/hardware/avr/timer/u8AVRTimerSetups.c | 110 |
3 files changed, 224 insertions, 0 deletions
diff --git a/2.3-1/src/c/hardware/avr/timer/u16AVRGetTimerValues.c b/2.3-1/src/c/hardware/avr/timer/u16AVRGetTimerValues.c new file mode 100644 index 00000000..8ef16e8d --- /dev/null +++ b/2.3-1/src/c/hardware/avr/timer/u16AVRGetTimerValues.c @@ -0,0 +1,51 @@ +/* Copyright (C) 2016 - IIT Bombay - FOSSEE + + This file must be used under the terms of the CeCILL. + This source file is licensed as described in the file COPYING, which + you should have received as part of this distribution. The terms + are also available at + http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt + Author: Ashish Kamble + Organization: FOSSEE, IIT Bombay + Email: toolbox@scilab.in +*/ +//Function selects the clock source and timer with prescaler. + + +#include "AVRPeripheralTimer.h" +#include <avr/interrupt.h> + + +uint16 u8AVRGetTimerValues(uint16 timer) +{ + uint16_t x; + switch(timer) + { + case 0: + { + x = TCNT0; + break; + } + + case 1: + { + unsigned char sreg; + unsigned int val; + sreg = SREG; + cli(); + val = TCNT1; + SREG = sreg; + sei(); + x = val; + break; + } + + case 2: + { + x = TCNT2; + break; + } + } +return x; +} + diff --git a/2.3-1/src/c/hardware/avr/timer/u8AVRGetTimerValues.c b/2.3-1/src/c/hardware/avr/timer/u8AVRGetTimerValues.c new file mode 100644 index 00000000..e08bb3a6 --- /dev/null +++ b/2.3-1/src/c/hardware/avr/timer/u8AVRGetTimerValues.c @@ -0,0 +1,63 @@ +// Copyright (C) 2017 - IIT Bombay - FOSSEE +// +// This file must be used under the terms of the CeCILL. +// This source file is licensed as described in the file COPYING, which +// you should have received as part of this distribution. The terms +// are also available at +// http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt +// Organization: FOSSEE, IIT Bombay +// Email: toolbox@scilab.in + + +// Function to get timer count +// +// Calling Sequence +// u8AVRGetTimerValues(timer) +// +// Parameters +// timer: timer whose current count is to be returned (0,1,2) +// ***Refer datasheet for more description about timer +// +// Description +// This function returns the count of timer specified +// +// +// Authors +// Ashish Kamble +// + + +#include "AVRPeripheralTimer.h" +#include <avr/interrupt.h> + + +uint16 u8AVRGetTimerValues(uint16 timer) +{ uint16_t x; + switch(timer) + { + case 0: + { + x = TCNT0; + break; + } + case 1: + { + unsigned char sreg; + unsigned int val; + sreg = SREG; + cli(); + val = TCNT1; + SREG = sreg; + sei(); + x = val; + break; + } + case 2: + { + x = TCNT2; + break; + } + } +return x; +} + diff --git a/2.3-1/src/c/hardware/avr/timer/u8AVRTimerSetups.c b/2.3-1/src/c/hardware/avr/timer/u8AVRTimerSetups.c new file mode 100644 index 00000000..6ee8d2af --- /dev/null +++ b/2.3-1/src/c/hardware/avr/timer/u8AVRTimerSetups.c @@ -0,0 +1,110 @@ +/* Copyright (C) 2016 - IIT Bombay - FOSSEE + + This file must be used under the terms of the CeCILL. + This source file is licensed as described in the file COPYING, which + you should have received as part of this distribution. The terms + are also available at + http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt + Author: Ashish Kamble + Organization: FOSSEE, IIT Bombay + Email: toolbox@scilab.in +*/ +//Function selects the clock source and timer with prescaler. + +#include "AVRPeripheralTimer.h" + +uint8 u8AVRTimerSetups(uint8 timer,uint16 prescaler,uint8 clock_source) +{ + + if(clock_source==0) + { + if(timer==0) + { + switch(prescaler) + { + case 1: TCCR0 |= (1<<CS00); + TCNT0 = 0x00; + case 8: TCCR0 |= (1<<CS01); + TCNT0 = 0x00; + case 64: TCCR0 |= (1<<CS00)|(1<<CS01); + TCNT0 = 0x00; + case 256: TCCR0 |= (1<<CS02); + TCNT0 = 0x00; + case 1024: TCCR0 |= (1<<CS00)|(1<<CS02); + TCNT0 = 0x00; + } + } + else if(timer==2) + { + switch(prescaler) + { + case 1: TCCR2 |= (1<<CS20); + TCNT2 = 0x00; + case 8: TCCR2 |= (1<<CS21); + TCNT2 = 0x00; + case 64: TCCR2 |= (1<<CS20)|(1<<CS21); + TCNT2 = 0x00; + case 256: TCCR2 |= (1<<CS22); + TCNT2 = 0x00; + case 1024: TCCR2 |= (1<<CS20)|(1<<CS22); + TCNT2 = 0x00; + } + } + else if(timer==1) + { + switch(prescaler) + { + case 1: TCCR1B |= (1<<CS10); + TCNT1H = 0x00; + TCNT1L = 0x00; + case 8: TCCR1B |= (1<<CS11); + TCNT1H = 0x00; + TCNT1L = 0x00; + case 64: TCCR1B |= (1<<CS10)|(1<<CS11); + TCNT1H = 0x00; + TCNT1L = 0x00; + case 256: TCCR1B |= (1<<CS12); + TCNT1H = 0x00; + TCNT1L = 0x00; + case 1024: TCCR1B |= (1<<CS10)|(1<<CS12); + TCNT1H = 0x00; + TCNT1L = 0x00; + } + } + } + else if(clock_source==1) + { + if(timer==0) + { + TCCR0 |= (1<<CS00)|(1<<CS01)|(1<<CS02); + TCNT0 = 0x00; + } + else if(timer==2) + { + TCCR2 |= (1<<CS20)|(1<<CS21)|(1<<CS22); + TCNT2 = 0x00; + } + else if(timer==1) + { + TCCR1B |= (1<<CS10)|(1<<CS11)|(1<<CS12); + TCNT1H = 0x00; + TCNT1L = 0x00; + } + } + return 0; +} + + + + + + + + + + + + + + + |