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com2w: added support for pin change interrupts on atmega644P

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This commit is contained in:
Martin Preuss
2025-11-17 23:00:40 +01:00
parent f8c914538a
commit 520f371560
1 changed files with 23 additions and 5 deletions
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28
avr/modules/com2w/com2w.asm
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@@ -70,6 +70,20 @@
.macro M_COM2WSETUPPCICR
inr r16, COM_IRQ_ADDR_CLK ; enable pin change irq for CLK line
ori r16, (1<<COM_IRQ_BIT_CLK)
outr COM_IRQ_ADDR_CLK, r16
inr r16, COM_IRQ_ICR_ADDR ; enable pin change irq in PCICR
ori r16, (1<<COM_IRQ_ICR_BIT)
outr COM_IRQ_ICR_ADDR, R16
ldi r16, (1<<COM_IRQ_IFR_BIT) ; clear pending irq by writing 1 to CLK bit
out COM_IRQ_IFR_ADDR, r16
.endmacro
.dseg .dseg
@@ -116,14 +130,18 @@ COM2W_Init:
rcall com2wEnableClkIrq rcall com2wEnableClkIrq
; enable IRQ ; enable IRQ
.ifdef INT0 .ifdef COM_IRQ_ICR_ADDR
.if COM_IRQ_BIT_CLK == INT0 M_COM2WSETUPPCICR
M_COM2WSETUPINT0 .else
.ifdef INT0
.if COM_IRQ_BIT_CLK == INT0
M_COM2WSETUPINT0
.else
M_COM2WSETUPPCI
.endif
.else .else
M_COM2WSETUPPCI M_COM2WSETUPPCI
.endif .endif
.else
M_COM2WSETUPPCI
.endif .endif