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-rw-r--r--software/ihu/ihu.asm16
-rw-r--r--software/ihu/spi.inc43
2 files changed, 57 insertions, 2 deletions
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
@@ -278,6 +287,9 @@ 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
+
+ ;; -------------------------------------