From baeab66226c203843204f2901691ecc4728635e9 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@mur.at>
Date: Tue, 27 Sep 2011 20:51:43 +0000
Subject: ihu: dtmf inbuf (not finished) ihu: pin doc -> uart to mpu (no spi)

git-svn-id: https://svn.spreadspace.org/mur.sat@176 7de4ea59-55d0-425e-a1af-a3118ea81d4c
---
 software/ihu/ihu.asm | 45 ++++++++++++++++++++++++++++++---------------
 1 file changed, 30 insertions(+), 15 deletions(-)

(limited to 'software')

diff --git a/software/ihu/ihu.asm b/software/ihu/ihu.asm
index f763407..0a8e907 100644
--- a/software/ihu/ihu.asm
+++ b/software/ihu/ihu.asm
@@ -55,16 +55,16 @@ BAT_C         EQU 3
 RTC_SDA       EQU 4
 RTC_SCL       EQU 5
 RTC_INT       EQU 6
-MPU_INT       EQU 7
+UNDEF_B7      EQU 7             
 ;; PortC
 MPU_PWRDWN    EQU 0
 MPU_RESET     EQU 1
-MPU_CS        EQU 2
-MPU_SCK       EQU 3
-MPU_SDI       EQU 4
-MPU_SDO       EQU 5
-ICOM_TX       EQU 6
-ICOM_RX       EQU 7
+UNDEF_C2      EQU 2
+UNDEF_C3      EQU 3
+UNDEF_C4      EQU 4
+UNDEF_C5      EQU 5
+MPU_TX        EQU 6
+MPU_RX        EQU 7
 ;; PortD
 DTMF_D0       EQU 0
 DTMF_D1       EQU 1
@@ -78,7 +78,7 @@ TTX_SDA       EQU 7
 SOLAR_C5      EQU 0
 SOLAR_C6      EQU 1
 SOLAR_C7      EQU 2
-  
+
   ;;   variables
   ;;     page 0 only
 TMP           EQU H'0020'
@@ -89,8 +89,12 @@ TTX_CSUM      EQU H'0024'
 
 RTC_BYTE_CNT  EQU H'0028'
 
-WAIT_CNT      EQU H'0030'
+WAIT_CNT      EQU H'002F'
 
+DTMF_BUF      EQU H'0030'       ; 5Bytes for incoming DTMF commands
+DTMF_BUF_END  EQU H'0034'
+DTMF_BUF_PTR  EQU H'0035'
+  
 BUF           EQU H'0040'
 BUF_END       EQU H'004F'
 
@@ -112,7 +116,8 @@ RTC_BIT_CNT   EQU H'0071'
 OWIRE_BYTE    EQU H'0072'
 OWIRE_BIT_CNT EQU H'0073'
 OWIRE_CNT     EQU H'0074'
-  
+
+FSR_TEMP      EQU H'007D'  
 W_TEMP        EQU H'007E'
 STATUS_TEMP   EQU H'007F'
 
@@ -130,10 +135,13 @@ STATUS_TEMP   EQU H'007F'
   movwf     W_TEMP
   swapf     STATUS,W
   movwf     STATUS_TEMP
-
+  movf      FSR,w
+  movwf     FSR_TEMP
+  
   bcf       STATUS,RP0
   bcf       STATUS,RP1
 
+  ;;  dispatch interrupt sources
   btfsc     INTCON,INTF
   goto      int_dtmf
   btfsc     PIR1,RCIF
@@ -141,10 +149,12 @@ STATUS_TEMP   EQU H'007F'
   goto      interrupt_end
 
 int_dtmf
+  movf      DTMF_BUF_PTR,w
+  movwf     FSR
   movf      PORTD,w
   andlw     b'00001111'
   call      dtmfSign
-  movwf     TXREG
+  movwf     INDF
   bcf       INTCON,INTF
   goto      interrupt_end
   
@@ -162,6 +172,8 @@ int_uart_rx_oe
   
 interrupt_end
   ;; restore context
+  movf      FSR_TEMP,w
+  movwf     FSR
   swapf     STATUS_TEMP,W
   movwf     STATUS
   swapf     W_TEMP,F
@@ -182,9 +194,9 @@ init
   ;; bank 1
   bsf       STATUS,RP0
   bcf       STATUS,RP1
-  movlw     b'11110000'
+  movlw     b'01110000'
   movwf     WPUB
-  movlw     b'11000000'
+  movlw     b'01000000'
   movwf     IOCB
   movlw     b'01000001'
   movwf     OPTION_REG
@@ -195,7 +207,7 @@ init
   movwf     TRISA
   movlw     b'11111111'
   movwf     TRISB
-  movlw     b'11111000'
+  movlw     b'11111100'
   movwf     TRISC
   movlw     b'10001111'
   movwf     TRISD
@@ -219,6 +231,9 @@ init
   clrf      PORTB
   
   bcf       PORTD,DTMF_PWRDWN
+  movlw     DTMF_BUF
+  movwf     DTMF_BUF_PTR
+
   bcf       PORTD,TTX_RESET     ;reset TTX
   bcf       PORTD,TTX_SCL
   bcf       PORTD,TTX_SDA
-- 
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