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authorChristian Pointner <equinox@spreadspace.org>2013-07-02 02:35:27 +0000
committerChristian Pointner <equinox@spreadspace.org>2013-07-02 02:35:27 +0000
commit6fdf64f3b39f03e809b80ddeee6256555146d0ae (patch)
tree00c20e0bf85d90ef2b07fc674483696a633270cb /bootloader/bootloader.asm
parentcleanup (diff)
added very basic version for bootloader and downloader
git-svn-id: https://svn.spreadspace.org/pic/trunk@15 a09c6847-51d9-44de-8ef2-e725cf50f3c7
Diffstat (limited to 'bootloader/bootloader.asm')
-rw-r--r--bootloader/bootloader.asm61
1 files changed, 61 insertions, 0 deletions
diff --git a/bootloader/bootloader.asm b/bootloader/bootloader.asm
new file mode 100644
index 0000000..eacc30b
--- /dev/null
+++ b/bootloader/bootloader.asm
@@ -0,0 +1,61 @@
+ ;;
+ ;; spreadspace pic utils
+ ;;
+ ;;
+ ;; Copyright (C) 2011 Christian Pointner <equinox@spreadspace.org>
+ ;;
+ ;; This file is part of spreadspace pic utils.
+ ;;
+ ;; spreadspace pic utils 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.
+ ;;
+ ;; spreadspace pic utils 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 spreadspace pic utils. If not, see <http://www.gnu.org/licenses/>.
+ ;;
+ ;; -------------------------------------
+ ;; PREAMBLE
+
+ LIST p=16F887
+ include "p16f887.inc"
+ ;; __config _CONFIG1, _DEBUG_OFF & _LVP_OFF & _FCMEN_OFF & _IESO_OFF & _BOR_OFF & _CPD_OFF & _CP_OFF & _MCLRE_OFF & _PWRTE_OFF & _WDT_OFF & _XT_OSC
+ ;; __config _CONFIG2, _BOR21V & _WRT_256
+
+ ;; -------------------------------------
+ ;; DEFINES
+#define BOOTPIN PORTC,7
+USERVECT EQU H'100'
+ISRVECT EQU USERVECT + H'4'
+
+ ;; -------------------------------------
+ ;; Boot test
+ org 0
+ btfsc BOOTPIN
+ goto USERVECT
+ goto boot
+ org 4
+
+ ;; -------------------------------------
+ ;; goto user ISR
+isr
+ goto ISRVECT
+
+ ;; -------------------------------------
+ ;; Bootloader
+boot
+ goto USERVECT
+
+ ;; -------------------------------------
+ ;; dummy user code
+ org USERVECT
+ goto USERVECT
+
+ ;; -------------------------------------
+ ;; END
+ end