Timer interrupt vectors -- documented where?

Using Arduino Programming Questions
1

When I look at examples of interrupt code, I keep seeing what appear to be defined/reserved labels for the compiler to recognize ISR (interrupt service routine) vectors, eg,

ISR(TIMER1_COMPA_vect)

Is there a page where all these vectors are defined/listed?

Is there a way in the Arduino IDE or C++ that allows the programmer to explicitly establish the interrupt vector and write the ISR at a low level, including the interrupt return instruction (without resorting to assembler)?

2

I'm not sure where those kind of defines are listed. Those come from Atmel, not Arduino (along with defines for the names of registers)

Interrupt vectors are defined as SOURCE_vect, where SOURCE is the entry in the source column of the table at the start of the Interrupts section of the datasheet for the MCU in question (ie, vector number 1 is at address 0 and source is listed as RESET, so the vector is called RESET_vect)

No idea what you're asking in the last section?

3

Look in hardware/tools/avr/lib/avr/include/avr/iom328p.h in your distribution.
Then learn to use grep!

4

Dr_Quark:
Is there a way in the Arduino IDE or C++ that allows the programmer to explicitly establish the interrupt vector and write the ISR at a low level, including the interrupt return instruction (without resorting to assembler)?

5

List and explanation here www.nongnu.org/avr-libc/user-manual/group__avr__interrupts.html

Mark

6

MarkT:
Then learn to use grep!

For most people, that would be after learning to use Cygwin. :slight_smile:

7

Quite a few editors have "find in files" (ie. search multiple files, including sub-folders, for some string).

For the Atmega328 my interrupts page lists the vector names.

8

A bit late, but I found the is of ISRs here:

9