Arduino and Assembler

hi all,
i wanted re-use assembler code (in .s file). after searching forum , not finding how it, came following solution.
i wonder if there's way avoid writing libraries folder.

1. create folder in libraries, let's "routinesasm"
2. inside folder create file "routinesasm.h" containing like:

code: [select]

extern "c" {
 void increment_a_number(void);
}

3. inside folder create file "routinesasm.s" containing assembler routines, like:

code: [select]

#include <avr/io.h>
.extern a_number
.global increment_a_number
increment_a_number:
     push r16
     lds r16, a_number
     inc      r16
     sts      a_number, r16
     pop r16
     ret

4. sketch must include .h file, like:

code: [select]

/*
 program:  test arduino , assembler
 autor:  [iard]
 date:   2010-06-09
*/

#include <routinesasm.h>

volatile int a_number;
// load variable ram , not storage register

extern void increment_a_number(void);

void setup() {
 serial.begin(9600);
}

void loop() {
 a_number = 5;  // initial value
 serial.print("initial number = " );
 serial.println(a_number);
 increment_a_number();  // call assembler routine
 serial.print("incremented number = " );
 serial.println(a_number);
 delay(1000);
}

that's it... won't work if .h , .s files in same folder .pde sketch.
any suggestions?

hi,
   i think problem lies in compiler looks include files. think you'd have modify compile scripts include .pde folder well.

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