X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fcpu%2Favr%2Fdrv%2Ftimer_avr.h;h=89d0dd76d134c9d5ff8ebb595838e4e0fa9fa2b2;hb=bb26872e115380a4354346bce26a0e1ec94f7628;hp=74414263123c9dbcdd838f6a460ea6b2e8d0ec24;hpb=345f93de1963f49bdb194d2b06c8c5d7ba0a3e5f;p=bertos.git diff --git a/bertos/cpu/avr/drv/timer_avr.h b/bertos/cpu/avr/drv/timer_avr.h index 74414263..89d0dd76 100644 --- a/bertos/cpu/avr/drv/timer_avr.h +++ b/bertos/cpu/avr/drv/timer_avr.h @@ -27,77 +27,37 @@ * the GNU General Public License. * * Copyright 2003, 2004, 2005 Develer S.r.l. (http://www.develer.com/) - * Copyright 2000 Bernardo Innocenti + * Copyright 2000 Bernie Innocenti * * --> * + * \brief Low-level timer module for AVR (interface). + * * \version $Id$ * - * \author Bernardo Innocenti + * \author Bernie Innocenti * \author Francesco Sacchi * - * \brief Low-level timer module for AVR (interface). */ -/*#* - *#* $Log$ - *#* Revision 1.32 2007/10/08 12:14:32 batt - *#* Fix some review issues. - *#* - *#* Revision 1.31 2007/10/07 12:30:55 batt - *#* Add default timer for AVR. - *#* - *#* Revision 1.30 2007/06/07 14:35:12 batt - *#* Merge from project_ks. - *#* - *#* Revision 1.29 2007/03/21 11:01:36 batt - *#* Add missing support for ATMega1281. - *#* - *#* Revision 1.28 2006/07/19 12:56:26 bernie - *#* Convert to new Doxygen style. - *#* - *#* Revision 1.27 2006/05/18 00:38:24 bernie - *#* Use hw_cpu.h instead of ubiquitous hw.h. - *#* - *#* Revision 1.26 2006/02/21 21:28:02 bernie - *#* New time handling based on TIMER_TICKS_PER_SEC to support slow timers with ticks longer than 1ms. - *#* - *#* Revision 1.25 2005/07/19 07:26:37 bernie - *#* Refactor to decouple timer ticks from milliseconds. - *#* - *#* Revision 1.24 2005/04/11 19:10:28 bernie - *#* Include top-level headers from cfg/ subdir. - *#* - *#* Revision 1.23 2005/03/01 23:24:51 bernie - *#* Tweaks for avr-libc 1.2.x. - *#* - *#* Revision 1.21 2004/12/13 12:07:06 bernie - *#* DISABLE_IRQSAVE/ENABLE_IRQRESTORE: Convert to IRQ_SAVE_DISABLE/IRQ_RESTORE. - *#* - *#* Revision 1.20 2004/11/16 20:59:46 bernie - *#* Include explicitly. - *#* - *#* Revision 1.19 2004/10/19 08:56:41 bernie - *#* TIMER_STROBE_ON, TIMER_STROBE_OFF, TIMER_STROBE_INIT: Move from timer_avr.h to timer.h, where they really belong. - *#* - *#* Revision 1.18 2004/09/20 03:31:03 bernie - *#* Fix racy racy code. - *#*/ #ifndef DRV_TIMER_AVR_H #define DRV_TIMER_AVR_H -#include /* CONFIG_TIMER */ -#include /* uint8_t */ -#include /* DIV_ROUND */ -#include /* CLOCK_FREQ */ +#include /* CPU_FREQ */ + +#include "cfg/cfg_timer.h" /* CONFIG_TIMER */ +#include /* uint8_t */ +#include /* DIV_ROUND */ + +#include +#include /** * \name Values for CONFIG_TIMER. * * Select which hardware timer interrupt to use for system clock and softtimers. * \note The timer 1 overflow mode set the timer as a 24 kHz PWM. - * - * \{ + * $WIZ$ timer_select = "TIMER_ON_OUTPUT_COMPARE0", "TIMER_ON_OVERFLOW1", "TIMER_ON_OUTPUT_COMPARE2", "TIMER_ON_OVERFLOW3", "TIMER_DEFAULT" */ #define TIMER_ON_OUTPUT_COMPARE0 1 #define TIMER_ON_OVERFLOW1 2 @@ -105,7 +65,6 @@ #define TIMER_ON_OVERFLOW3 4 #define TIMER_DEFAULT TIMER_ON_OUTPUT_COMPARE0 ///< Default system timer -/* \} */ /* * Hardware dependent timer initialization. @@ -114,13 +73,22 @@ #define TIMER_PRESCALER 64 #define TIMER_HW_BITS 8 - #define DEFINE_TIMER_ISR SIGNAL(SIG_OUTPUT_COMPARE0) + #if CPU_AVR_ATMEGA1281 || CPU_AVR_ATMEGA168 + #define DEFINE_TIMER_ISR SIGNAL(SIG_OUTPUT_COMPARE0A) + #else + #define DEFINE_TIMER_ISR SIGNAL(SIG_OUTPUT_COMPARE0) + #endif #define TIMER_TICKS_PER_SEC 1000 #define TIMER_HW_CNT OCR_DIVISOR /// Type of time expressed in ticks of the hardware high-precision timer typedef uint8_t hptime_t; + INLINE hptime_t timer_hw_hpread(void) + { + return TCNT0; + } + #elif (CONFIG_TIMER == TIMER_ON_OVERFLOW1) #define TIMER_PRESCALER 1 @@ -133,6 +101,11 @@ /// Type of time expressed in ticks of the hardware high precision timer typedef uint16_t hptime_t; + INLINE hptime_t timer_hw_hpread(void) + { + return TCNT1; + } + #elif (CONFIG_TIMER == TIMER_ON_OUTPUT_COMPARE2) #define TIMER_PRESCALER 64 @@ -146,10 +119,14 @@ /** Value for OCR register in output-compare based timers. */ #define TIMER_HW_CNT OCR_DIVISOR - /// Type of time expressed in ticks of the hardware high precision timer typedef uint8_t hptime_t; + INLINE hptime_t timer_hw_hpread(void) + { + return TCNT2; + } + #elif (CONFIG_TIMER == TIMER_ON_OVERFLOW3) #define TIMER_PRESCALER 1 @@ -161,6 +138,12 @@ /// Type of time expressed in ticks of the hardware high precision timer typedef uint16_t hptime_t; + + INLINE hptime_t timer_hw_hpread(void) + { + return TCNT3; + } + #else #error Unimplemented value for CONFIG_TIMER @@ -168,13 +151,13 @@ /** Frequency of the hardware high precision timer. */ -#define TIMER_HW_HPTICKS_PER_SEC DIV_ROUND(CLOCK_FREQ, TIMER_PRESCALER) +#define TIMER_HW_HPTICKS_PER_SEC DIV_ROUND(CPU_FREQ, TIMER_PRESCALER) /** * System timer: additional division after the prescaler * 12288000 / 64 / 192 (0..191) = 1 ms */ -#define OCR_DIVISOR (DIV_ROUND(DIV_ROUND(CLOCK_FREQ, TIMER_PRESCALER), TIMER_TICKS_PER_SEC) - 1) +#define OCR_DIVISOR (DIV_ROUND(DIV_ROUND(CPU_FREQ, TIMER_PRESCALER), TIMER_TICKS_PER_SEC) - 1) /** Not needed, IRQ timer flag cleared automatically */ #define timer_hw_irq() do {} while (0) @@ -182,5 +165,6 @@ /** Not needed, timer IRQ handler called only for timer source */ #define timer_hw_triggered() (true) +void timer_hw_init(void); #endif /* DRV_TIMER_AVR_H */