avr: started work on com2w_router for S03.

2026-02-16 01:12:25 +01:00
parent 1b0519437c
commit 5fc3916457
8 changed files with 568 additions and 0 deletions
--- a/avr/modules/com2w_router/init.asm
+++ b/avr/modules/com2w_router/init.asm
@@ -0,0 +1,76 @@
+; ***************************************************************************
+; copyright   : (C) 2026 by Martin Preuss
+; email       : martin@libchipcard.de
+;
+; ***************************************************************************
+; * This file is part of the project "AqHome".                              *
+; * Please see toplevel file COPYING of that project for license details.   *
+; ***************************************************************************
+
+#ifndef AVR_MOD_COM2WROUTER_INIT_ASM
+#define AVR_MOD_COM2WROUTER_INIT_ASM
+
+
+
+; ***************************************************************************
+; defines
+
+
+
+; ***************************************************************************
+; code
+
+.cseg
+
+; ---------------------------------------------------------------------------
+; @routine COM2WR_Router_Init @global
+;
+; @clobbers r16
+
+COM2WR_Router_Init:
+  ; setup data
+  clr r16
+  sts com2wAllCurrentPinMask, r16
+  dec r16
+  sts com2wAllLastClock, r16      ; preset last clock with 1
+
+  bigcall COM2WR_Ringbuffer_Init
+
+  ; TODO: setup all sub-interfaces
+
+  ; setup lines
+  clr r16
+  outr COM_CLK_DDR, r16           ; make all CLK pins inputs
+  outr COM_DATA_DDR, r16          ; make all DATA pins inputs
+
+.ifdef COM_CLK_PUE
+  outr COM_CLK_PUE, r16           ; disable pullup resistors on CLK lines
+.endif
+
+.ifdef COM_DATA_PUE
+  outr COM_DATA_PUE, r16          ; disable pullup resistors on DATA lines
+.endif
+
+  ; enable pin change irqs for all pins of given port
+  ldi r16, 0xff
+  outr COM_IRQ_ADDR_CLK, r16
+  
+  ; enable PCIEn irq
+  inr r16, COM_IRQ_ADDR_M_CLK     ; enable pin change irq PCIEn
+  sbr r16, (1<<COM_IRQ_BIT_M_CLK)
+  outr COM_IRQ_ADDR_M_CLK, r16
+
+  ; clear PCIEn interrupt flag
+  inr r16, COM_IRQ_ADDR_F_CLK     ; enable pin change irq PCIEn
+  sbr r16, (1<<COM_IRQ_BIT_F_CLK)
+  outr COM_IRQ_ADDR_F_CLK, r16
+
+  ret
+; @end
+
+
+
+
+
+#endif ; AVR_MOD_COM2WROUTER_INIT_ASM
+