CVS: jtag/funclets counter.S,NONE,1.1 makefile,1.6,1.7

Update of /cvsroot/mspgcc/jtag/funclets
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv17021/jtag/funclets

Modified Files:
	makefile 
Added Files:
	counter.S 
Log Message:
- add the ability to run funclets for a given time
- new function MSP430_FuncletWait, internal API changes for executeCode
- add a counter funclet (can be used to determine DCO frequency)
- update msp430-jtag with the new feature

--- NEW FILE: counter.S ---
/* This implements a simple 32 bit up counter. It can be used to measure
the frequency of the DCO clock.

The funclet won't stop itself. The idea is that the host runs this funclet for
example for 100ms and then reads the registers R14:R15. The clock
frequency can then be aproximated:

    f(dco) = (R14:R15*4)/(0.1s)  [Hz]

Usage:

    msp430-jtag --result=rall --timeout=0.1 --funclet counter.a43

This programm must be linked specialy so that it's placed in the RAM.
(see makefile).
The first six bytes and its contents are mandatory. Also must the funclet
end with a "jmp $" instruction.

chris <[email protected]>
*/

#include <io.h>

.text
start:  .word   start                   ; target address to download in MSP430
        .word   main                    ; staring address of code
        .word   stop                    ; end address, where the "jmp $" is located

main:   clr     R14
        clr     R15

.Lloop: inc     R14                     ; 1 ]
        adc     R15                     ; 1 ]> 4 clocks/loop
        jmp     .Lloop                  ; 2 ]

        nop                             ; PC points past the last instruction for
                                        ; a short time, ensure that it is not the
                                        ; stop address, and the funclet is stopped
                                        ; by accident

stop:   jmp     stop                    ; end of program, detected by library

Index: makefile
===================================================================
RCS file: /cvsroot/mspgcc/jtag/funclets/makefile,v
retrieving revision 1.6
retrieving revision 1.7
diff -u -w -d -r1.6 -r1.7
--- makefile	23 Dec 2005 02:33:55 -0000	1.6
+++ makefile	27 Dec 2005 01:12:11 -0000	1.7
@@ -18,6 +18,7 @@
      eraseFlashSegment.ci eraseFlashSegment.lst \
      progFlash.ci progFlash.lst \
      ramsizeDetect.ci ramsizeDetect.lst \
+     counter.ci counter.lst \
      #~ regtest.a43 blinking.a43
 
 #pattern rule for funclets



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