From 976f4448944685e437a4c8bf34fab83cad6ac371 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@mur.at>
Date: Sat, 27 Jul 2013 00:18:03 +0000
Subject: added bat interrupt and spi stub

git-svn-id: https://svn.spreadspace.org/mur.sat@817 7de4ea59-55d0-425e-a1af-a3118ea81d4c
---
 software/ihu/ihu.asm | 16 ++++++++++++++--
 software/ihu/spi.inc | 43 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 57 insertions(+), 2 deletions(-)
 create mode 100644 software/ihu/spi.inc

(limited to 'software/ihu')

diff --git a/software/ihu/ihu.asm b/software/ihu/ihu.asm
index 1b483e1..b9cbdad 100644
--- a/software/ihu/ihu.asm
+++ b/software/ihu/ihu.asm
@@ -145,6 +145,7 @@ STATUS_TEMP   EQU H'007F'
   goto      interrupt_end
 
 int_ctr
+  ;; TODO: get byte from CTR (via SPI)
   bcf       INTCON,INTF
   goto      interrupt_end
 
@@ -152,6 +153,13 @@ int_ctr
 int_portchange
   btfsc     RTC_RST
   call      rtc_init
+  btfsc     BAT_INT
+  goto      int_bat
+  bcf       INTCON,RBIF
+  goto      interrupt_end
+
+int_bat
+  ;; TODO: get byte from BAT (via SPI)
   bcf       INTCON,RBIF
   goto      interrupt_end
 
@@ -197,8 +205,8 @@ init
   bcf       STATUS,RP1
   movlw     b'00111111'		; Weak Pull-UPS for
   movwf     WPUB		;   RTC_RST, DEPLOY, CAPGOOD, POWER_FAIL, BAT_INT, CTR_INT
-  movlw     b'00100000'		; Port Change Interrup on
-  movwf     IOCB		;   RTC_RST
+  movlw     b'00101000'		; Port Change Interrup on
+  movwf     IOCB		;   RTC_RST, BAT_INT
   movlw     b'00000010'		; Weak-Pull-UPs enabled, INT -> falling edge, TMR0 internal clock
   movwf     OPTION_REG		; Prescaler @ TMR0, Prescaler 1:8
   clrf      PSTRCON		; disable pulse steering
@@ -240,6 +248,7 @@ init
   movwf     INTCON
 
   call      i2c_init
+  call      spi_init
   clrf      TMR0
   clrf      TMP
   bsf       INTCON,GIE
@@ -277,6 +286,9 @@ wait_loop
   ;; -------------------------------------
   include   "rtc.inc"
 
+  ;; -------------------------------------
+  include   "spi.inc"
+
   ;; -------------------------------------
   ;; include   "temp.inc"
 
diff --git a/software/ihu/spi.inc b/software/ihu/spi.inc
new file mode 100644
index 0000000..ff8e3c6
--- /dev/null
+++ b/software/ihu/spi.inc
@@ -0,0 +1,43 @@
+  ;;
+  ;;  mur.sat
+  ;;
+  ;;  Somewhen in the year 2012, mur.at will have a nano satellite launched
+  ;;  into a low earth orbit (310 km above the surface of our planet). The
+  ;;  satellite itself is a TubeSat personal satellite kit, developed and
+  ;;  launched by interorbital systems. mur.sat is a joint venture of mur.at,
+  ;;  ESC im Labor and realraum.
+  ;;
+  ;;  Please visit the project hompage at sat.mur.at for further information.
+  ;;
+  ;;
+  ;;  Copyright (C) 2011-2013 Christian Pointner <equinox@mur.at>
+  ;;
+  ;;  This file is part of mur.sat.
+  ;;
+  ;;  mur.sat is free software: you can redistribute it and/or modify
+  ;;  it under the terms of the GNU General Public License as published by
+  ;;  the Free Software Foundation, either version 3 of the License, or
+  ;;  any later version.
+  ;;
+  ;;  mur.sat is distributed in the hope that it will be useful,
+  ;;  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ;;  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  ;;  GNU General Public License for more details.
+  ;;
+  ;;  You should have received a copy of the GNU General Public License
+  ;;  along with mur.sat. If not, see <http://www.gnu.org/licenses/>.
+  ;;
+
+  ;; -------------------------------------
+spi_init
+  return
+
+  ;; ------------------
+spi_send_byte
+  return
+
+  ;; ------------------
+spi_recv_byte
+  return
+
+  ;; -------------------------------------
-- 
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