From 0dc9f0330cac9bfc67dd5f1ee151849de6a5beb3 Mon Sep 17 00:00:00 2001
From: Martin Preuss <martin@aquamaniac.de>
Date: Tue, 9 Sep 2025 00:47:24 +0200
Subject: [PATCH] increase irq frequency (now every 10us).

---
 avr/modules/com2w/com2wi2.asm | 35 ++++++++++++++++++++---------------
 1 file changed, 20 insertions(+), 15 deletions(-)

diff --git a/avr/modules/com2w/com2wi2.asm b/avr/modules/com2w/com2wi2.asm
index cf90c5c..f6208e9 100644
--- a/avr/modules/com2w/com2wi2.asm
+++ b/avr/modules/com2w/com2wi2.asm
@@ -15,20 +15,20 @@
 
 .equ COM2WI_BUFFER_SIZE = NET_BUFFERS_SIZE-1
 
-.equ COM2WI_R_MAX_WAIT_HI_TIME = 50  ; max 1ms
-.equ COM2WI_S_MAX_WAIT_HI_TIME = 50  ; max 1ms
-.equ COM2WI_S_MAX_WAIT_LO_TIME = 50  ; max 1ms
+.equ COM2WI_R_MAX_WAIT_HI_TIME = 100  ; max 1ms
+.equ COM2WI_S_MAX_WAIT_HI_TIME = 100  ; max 1ms
+.equ COM2WI_S_MAX_WAIT_LO_TIME = 100  ; max 1ms
 
 
-.equ COM2WI_W_MAX_WAIT_BUSFREE = 50  ; max 1ms
+.equ COM2WI_W_MAX_WAIT_BUSFREE = 100  ; max 1ms
 
-.equ COM2WI_STATETIMER_W_BYTEHOLDCLOCKLOW =  1 ; 20 us
-.equ COM2WI_STATETIMER_W_BITHOLDCLOCKLOW  =  1 ; 20 us
-.equ COM2WI_STATETIMER_W_BITSETDATA       =  1 ; 20 us
-.equ COM2WI_STATETIMER_W_BITHOLDCLOCKHIGH =  1 ; 20 us
-.equ COM2WI_STATETIMER_R_WAITFORCLOCKHIGH = 50 ;  1 ms
-.equ COM2WI_STATETIMER_R_WAITFORCLOCKLOW  = 50 ;  1 ms
-.equ COM2WI_STATETIMER_S_WAITFORCLOCKLOW  = 50 ;  1 ms
+.equ COM2WI_STATETIMER_W_BYTEHOLDCLOCKLOW =  2 ; 20 us
+.equ COM2WI_STATETIMER_W_BITHOLDCLOCKLOW  =  2 ; 20 us
+.equ COM2WI_STATETIMER_W_BITSETDATA       =  2 ; 20 us
+.equ COM2WI_STATETIMER_W_BITHOLDCLOCKHIGH =  2 ; 20 us
+.equ COM2WI_STATETIMER_R_WAITFORCLOCKHIGH = 100 ;  1 ms
+.equ COM2WI_STATETIMER_R_WAITFORCLOCKLOW  = 100 ;  1 ms
+.equ COM2WI_STATETIMER_S_WAITFORCLOCKLOW  = 100 ;  1 ms
 
 .equ COM2WI_STATE_IDLE               = 0
 
@@ -159,6 +159,7 @@ COM2WI_Init:
 .if COM_PORTS >2
   mCOM2WI_INIT 2
 .endif
+
 .if COM_PORTS >3
   mCOM2WI_INIT 3
 .endif
@@ -166,6 +167,7 @@ COM2WI_Init:
 .if COM_PORTS >4
   mCOM2WI_INIT 4
 .endif
+
 .if COM_PORTS >5
   mCOM2WI_INIT 5
 .endif
@@ -173,6 +175,7 @@ COM2WI_Init:
 .if COM_PORTS >6
   mCOM2WI_INIT 6
 .endif
+
 .if COM_PORTS >7
   mCOM2WI_INIT 7
 .endif
@@ -330,8 +333,8 @@ com2wiSetupTimer1:
   ldi r16, (0<<CS12) | (0<<CS11) | (1<<CS10) | (0<<WGM13) | (1<<WGM12)
   outr TCCR1B, r16
   
-  clr r17  HIGH(400)
-  ldi r16, LOW(400)
+  clr r17  HIGH(200)
+  ldi r16, LOW(200)
   outr OCR1AH, r17
   outr OCR1AL, r16
 
@@ -1149,10 +1152,11 @@ com2wiRunStateRMsgRecvd_forMe:
   rcall NET_Buffer_Alloc                          ; R16=buffer num (R16, R17, X)
   brcc com2wiRunStateRMsgRecvd_noBuf
 
-  ; copy into allocated buffer
+  ; set interface number in msg header
   mov r19, r16                               ; save buffer num
   rcall NET_Interface_SetIfaceNumInBuffer    ; (R16, R17)
   mov r16, r19                               ; restore buffer num
+  ; copy into allocated buffer
   push zl
     push zh
       mov zl, yl
@@ -1187,6 +1191,7 @@ com2wiRunStateRMsgRecvd_goIdle:
     rcall com2wiEnterStateIdle
     out SREG, r15
   pop r15
+  sec
   rjmp com2wiRunStateRMsgRecvd_ret
 com2wiRunStateRMsgRecvd_noBuf:
   ldi r16, NET_IFACE_OFFS_ERR_NOBUF_LOW
@@ -1199,7 +1204,7 @@ com2wiRunStateRMsgRecvd_crcError:
 com2wReceiveNextPkg_eMissed:
   rcall NET_Buffer_ReleaseByNum                   ; (R16, X)
   ldi r16, NET_IFACE_OFFS_ERR_MISSED_LOW
-  rcall NET_Interface_IncCounter16              ; (R24, R25)
+  rcall NET_Interface_IncCounter16                ; (R24, R25)
   rjmp com2wiRunStateRMsgRecvd_goIdle
 com2wiRunStateRMsgRecvd_ret:
   ret