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Hi,
I want to get the width of a PWM on TIC3 Channel, I wrote an .asm but it
doesn't work, I don't know what's wrong?
I need your help.
Thanks in advance.
Said.
Here is the .asm program:
#include "c:\pcode\include\6811regs.asm"
* program equates
* variables
ORG MAIN_START
variable_width3 FDB 0
variable_frst3 FDB 0
subroutine_initialize_module:
#include "c:\pcode\include\ldxibase.asm"
* X now has base pointer to interrupt vectors ($FF00 or $BF00)
LDD #ic3Int
STD TIC3INT,X
LDX #BASE
BSET TCTL2,X %00000001 /* Interrupts TIC3,TIC2 rising edge*/
BSET TFLG1,X %00000001 /* Clear IC3,IC2 Flags */
BSET TMSK1,X %00000001 /* Clear Mask For Interrupt */
RTS
ic3Int:
BRSET TCTL2,X %00000001 second
BSET TCTL2,X %00000001
LDD TIC3,X
SUBD variable_frst3
STD variable_width3
LDX #BASE
BSET TFLG1,X %00000001
RTI
second
BSET TCTL2,X %00000010
LDD TIC3,X
STD variable_frst3
LDX #BASE
BSET TFLG1,X %00000001
RTI
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