RE: [avr-libc-dev] Possible Incorrect Interrupt Vector Addresses formega168

[Weddington, Eric]

Can you fill out a bug report at the avr-libc project on Savannah? That way it 
won't be forgotten and we can look into it easier.

Thanks,
Eric 

> -----Original Message-----
> From: 
> address@hidden 
> [mailto:address@hidden
org] On Behalf Of Jose Torres
> Sent: Tuesday, May 25, 2010 7:45 PM
> To: address@hidden
> Subject: [avr-libc-dev] Possible Incorrect Interrupt Vector 
> Addresses formega168
> 
> Hello,
> 
> I have been running into an issue using interrupts with 
> avr-libc 1.6.7 and
> an atmega168.
> 
> According to the mega168 datasheet the following are a sampling of the
> interrupt vector addresses:
> 
> Address Labels Code Comments
> 0x0000 jmp RESET ; Reset Handler
> 0x0002 jmp EXT_INT0 ; IRQ0 Handler
> 0x0004 jmp EXT_INT1 ; IRQ1 Handler
> 0x0006 jmp PCINT0 ; PCINT0 Handler
> 0x0008 jmp PCINT1 ; PCINT1 Handler
> 0x000A jmp PCINT2 ; PCINT2 Handler
> 0x000C jmp WDT ; Watchdog Timer Handler
> 0x000E jmp TIM2_COMPA ; Timer2 Compare A Handler
> 0x0010 jmp TIM2_COMPB ; Timer2 Compare B Handler
> 0x0012 jmp TIM2_OVF ; Timer2 Overflow Handler
> 0x0014 jmp TIM1_CAPT ; Timer1 Capture Handler
> 0x0016 jmp TIM1_COMPA ; Timer1 Compare A Handler
> 0x0018 jmp TIM1_COMPB ; Timer1 Compare B Handler
> 0x001A jmp TIM1_OVF ; Timer1 Overflow Handler
> 0x001C jmp TIM0_COMPA ; Timer0 Compare A Handler
> 0x001E jmp TIM0_COMPB ; Timer0 Compare B Handler
> 0x0020 jmp TIM0_OVF ; Timer0 Overflow Handler
> 
> iom168.h includes the vectors from iomx8.h.
> 
> Which state the vectors as follows:
> 
> /* External Interrupt Request 0 */
> #define INT0_vect            _VECTOR(1)
> #define SIG_INTERRUPT0            _VECTOR(1)
> 
> /* External Interrupt Request 1 */
> #define INT1_vect            _VECTOR(2)
> #define SIG_INTERRUPT1            _VECTOR(2)
> 
> /* Pin Change Interrupt Request 0 */
> #define PCINT0_vect            _VECTOR(3)
> #define SIG_PIN_CHANGE0            _VECTOR(3)
> 
> /* Pin Change Interrupt Request 0 */
> #define PCINT1_vect            _VECTOR(4)
> #define SIG_PIN_CHANGE1            _VECTOR(4)
> 
> /* Pin Change Interrupt Request 1 */
> #define PCINT2_vect            _VECTOR(5)
> #define SIG_PIN_CHANGE2            _VECTOR(5)
> 
> /* Watchdog Time-out Interrupt */
> #define WDT_vect            _VECTOR(6)
> #define SIG_WATCHDOG_TIMEOUT        _VECTOR(6)
> 
> /* Timer/Counter2 Compare Match A */
> #define TIMER2_COMPA_vect        _VECTOR(7)
> #define SIG_OUTPUT_COMPARE2A        _VECTOR(7)
> 
> These vectors are correct for the 48 and 88 but different for the 168.
> 
> Please forgive me if this has been corrected in version 1.6.8.
> 
> I am trying to activate PCINT1_vect.
> 
> Regards,
> Jose Torres
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