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/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <joerg@FreeBSD.ORG> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return. Joerg Wunsch
* ----------------------------------------------------------------------------
*
* IO feature compatibility definitions for various AVRs.
*
* $Id: iocompat.h 1638 2008-03-17 21:52:00Z joerg_wunsch $
*/
#if !defined(IOCOMPAT_H)
#define IOCOMPAT_H 1
/*
* Device-specific adjustments:
*
* Supply definitions for the location of the OCR1[A] port/pin, the
* name of the OCR register controlling the PWM, and adjust interrupt
* vector names that differ from the one used in demo.c
* [TIMER1_OVF_vect].
*/
#if defined(__AVR_AT90S2313__)
# define OC1 PB3
# define OCR OCR1
# define DDROC DDRB
# define TIMER1_OVF_vect TIMER1_OVF1_vect
#elif defined(__AVR_AT90S2333__) || defined(__AVR_AT90S4433__)
# define OC1 PB1
# define DDROC DDRB
# define OCR OCR1
#elif defined(__AVR_AT90S4414__) || defined(__AVR_AT90S8515__) || \
defined(__AVR_AT90S4434__) || defined(__AVR_AT90S8535__) || \
defined(__AVR_ATmega163__) || defined(__AVR_ATmega8515__) || \
defined(__AVR_ATmega8535__) || \
defined(__AVR_ATmega164P__) || defined(__AVR_ATmega324P__) || \
defined(__AVR_ATmega644__) || defined(__AVR_ATmega644P__) || \
defined(__AVR_ATmega1284P__)
# define OC1 PD5
# define DDROC DDRD
# define OCR OCR1A
# if !defined(TIMSK) /* new ATmegas */
# define TIMSK TIMSK1
# endif
#elif defined(__AVR_ATmega8__) || defined(__AVR_ATmega48__) || \
defined(__AVR_ATmega88__) || defined(__AVR_ATmega168__)
# define OC1 PB1
# define DDROC DDRB
# define OCR OCR1A
# if !defined(TIMSK) /* ATmega48/88/168 */
# define TIMSK TIMSK1
# endif /* !defined(TIMSK) */
#elif defined(__AVR_ATtiny2313__)
# define OC1 PB3
# define OCR OCR1A
# define DDROC DDRB
#elif defined(__AVR_ATtiny24__) || defined(__AVR_ATtiny44__) || \
defined(__AVR_ATtiny84__)
# define OC1 PA6
# define DDROC DDRA
# if !defined(OCR1A)
# /* work around misspelled name in avr-libc 1.4.[0..1] */
# define OCR OCRA1
# else
# define OCR OCR1A
# endif
# define TIMSK TIMSK1
# define TIMER1_OVF_vect TIM1_OVF_vect /* XML and datasheet mismatch */
#elif defined(__AVR_ATtiny25__) || defined(__AVR_ATtiny45__) || \
defined(__AVR_ATtiny85__)
/* Timer 1 is only an 8-bit timer on these devices. */
# define OC1 PB1
# define DDROC DDRB
# define OCR OCR1A
# define TCCR1A TCCR1
# define TCCR1B TCCR1
# define TIMER1_OVF_vect TIM1_OVF_vect
# define TIMER1_TOP 255 /* only 8-bit PWM possible */
# define TIMER1_PWM_INIT _BV(PWM1A) | _BV(COM1A1)
# define TIMER1_CLOCKSOURCE _BV(CS12) /* use 1/8 prescaler */
#elif defined(__AVR_ATtiny26__)
/* Rather close to ATtinyX5 but different enough for its own section. */
# define OC1 PB1
# define DDROC DDRB
# define OCR OCR1A
# define TIMER1_OVF_vect TIMER1_OVF1_vect
# define TIMER1_TOP 255 /* only 8-bit PWM possible */
# define TIMER1_PWM_INIT _BV(PWM1A) | _BV(COM1A1)
# define TIMER1_CLOCKSOURCE _BV(CS12) /* use 1/8 prescaler */
/*
* Without setting OCR1C to TOP, the ATtiny26 does not trigger an
* overflow interrupt in PWM mode.
*/
# define TIMER1_SETUP_HOOK() OCR1C = 255
#elif defined(__AVR_ATtiny261__) || defined(__AVR_ATtiny461__) || \
defined(__AVR_ATtiny861__)
# define OC1 PB1
# define DDROC DDRB
# define OCR OCR1A
# define TIMER1_PWM_INIT _BV(WGM10) | _BV(PWM1A) | _BV(COM1A1)
/*
* While timer 1 could be operated in 10-bit mode on these devices,
* the handling of the 10-bit IO registers is more complicated than
* that of the 16-bit registers of other AVR devices (no combined
* 16-bit IO operations possible), so we restrict this demo to 8-bit
* mode which is pretty standard.
*/
# define TIMER1_TOP 255
# define TIMER1_CLOCKSOURCE _BV(CS12) /* use 1/8 prescaler */
#elif defined(__AVR_ATmega32__) || defined(__AVR_ATmega16__)
# define OC1 PD5
# define DDROC DDRD
# define OCR OCR1A
#elif defined(__AVR_ATmega64__) || defined(__AVR_ATmega128__) || \
defined(__AVR_ATmega165__) || defined(__AVR_ATmega169__) || \
defined(__AVR_ATmega325__) || defined(__AVR_ATmega3250__) || \
defined(__AVR_ATmega645__) || defined(__AVR_ATmega6450__) || \
defined(__AVR_ATmega329__) || defined(__AVR_ATmega3290__) || \
defined(__AVR_ATmega649__) || defined(__AVR_ATmega6490__) || \
defined(__AVR_ATmega640__) || \
defined(__AVR_ATmega1280__) || defined(__AVR_ATmega1281__) || \
defined(__AVR_ATmega2560__) || defined(__AVR_ATmega2561__)
# define OC1 PB5
# define DDROC DDRB
# define OCR OCR1A
# if !defined(PB5) /* work around missing bit definition */
# define PB5 5
# endif
# if !defined(TIMSK) /* new ATmegas */
# define TIMSK TIMSK1
# endif
#else
# error "Don't know what kind of MCU you are compiling for"
#endif
/*
* Map register names for older AVRs here.
*/
#if !defined(COM1A1)
# define COM1A1 COM11
#endif
#if !defined(WGM10)
# define WGM10 PWM10
# define WGM11 PWM11
#endif
/*
* Provide defaults for device-specific macros unless overridden
* above.
*/
#if !defined(TIMER1_TOP)
# define TIMER1_TOP 1023 /* 10-bit PWM */
#endif
#if !defined(TIMER1_PWM_INIT)
# define TIMER1_PWM_INIT _BV(WGM10) | _BV(WGM11) | _BV(COM1A1)
#endif
#if !defined(TIMER1_CLOCKSOURCE)
# define TIMER1_CLOCKSOURCE _BV(CS10) /* full clock */
#endif
#endif /* !defined(IOCOMPAT_H) */
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