From e34f4cef5b441e5c4d69404e78166355a78e6162 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@mur.at>
Date: Wed, 27 Jul 2011 00:39:07 +0000
Subject: ttx <-> ihu communication include checksum/ack works now

git-svn-id: https://svn.spreadspace.org/mur.sat@64 7de4ea59-55d0-425e-a1af-a3118ea81d4c
---
 software/ihu/ihu.asm | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

(limited to 'software/ihu/ihu.asm')

diff --git a/software/ihu/ihu.asm b/software/ihu/ihu.asm
index 8951980..848b25e 100644
--- a/software/ihu/ihu.asm
+++ b/software/ihu/ihu.asm
@@ -225,6 +225,7 @@ ttx_recv_byte
   movlw     .8
   movwf     TTX_BIT_CNT
 ttx_recv_next_bit
+  rlf       TTX_BYTE,f
   bsf       PORTD,TTX_SCL
   nop
   nop
@@ -232,17 +233,17 @@ ttx_recv_next_bit
   bcf       PORTD,TTX_SCL
   nop
   nop
+  nop
+  nop
+  nop
   btfsc     PORTD,TTX_SDA
   bsf       TTX_BYTE,0
   btfss     PORTD,TTX_SDA
   bcf       TTX_BYTE,0
-  nop
-  nop
-  rlf       TTX_BYTE,f
   decfsz    TTX_BIT_CNT,f
   goto      ttx_recv_next_bit
   return
-  
+    
   ;; -------------------------------------
 ttx_break
   movlw     .13
@@ -285,13 +286,13 @@ ttx_next_byte
   xorwf     TTX_CSUM,w  
   btfss     STATUS,Z
   goto      ttx_csum_error
+  movlw     '.'
+  movwf     TXREG
   return    
 
 ttx_csum_error
-  bcf       PORTD,TTX_RESET     ;reset TTX
-  nop
-  nop
-  bsf       PORTD,TTX_RESET
+  movlw     'E'
+  movwf     TXREG
   return
   
   ;; -------------------------------------
-- 
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