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| author | richardbarry <richardbarry@1d2547de-c912-0410-9cb9-b8ca96c0e9e2> | 2006-05-27 13:53:15 +0000 |
|---|---|---|
| committer | richardbarry <richardbarry@1d2547de-c912-0410-9cb9-b8ca96c0e9e2> | 2006-05-27 13:53:15 +0000 |
| commit | a7f6db4b7c409c54c0ea34bf1908ea08ea2219d6 (patch) | |
| tree | ba5acee62104c87ebe4ae18818b53e0997ca7af0 /Demo/HCS12_GCC_banked/startup.c | |
| parent | d7dbc0659d07553731bf22aa298adcf5e5e7774d (diff) | |
| download | freertos-a7f6db4b7c409c54c0ea34bf1908ea08ea2219d6.tar.gz freertos-a7f6db4b7c409c54c0ea34bf1908ea08ea2219d6.tar.bz2 freertos-a7f6db4b7c409c54c0ea34bf1908ea08ea2219d6.tar.xz | |
New demo files for HCS12 GCC port.
git-svn-id: https://freertos.svn.sourceforge.net/svnroot/freertos/trunk@6 1d2547de-c912-0410-9cb9-b8ca96c0e9e2
Diffstat (limited to 'Demo/HCS12_GCC_banked/startup.c')
| -rw-r--r-- | Demo/HCS12_GCC_banked/startup.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/Demo/HCS12_GCC_banked/startup.c b/Demo/HCS12_GCC_banked/startup.c new file mode 100644 index 00000000..48a7de53 --- /dev/null +++ b/Demo/HCS12_GCC_banked/startup.c @@ -0,0 +1,86 @@ +/*
+ FreeRTOS V3.2.3 - Copyright (C) 2003-2005 Richard Barry.
+
+ This file is part of the FreeRTOS distribution.
+
+ FreeRTOS 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 2 of the License, or
+ (at your option) any later version.
+
+ FreeRTOS 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 FreeRTOS; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+ A special exception to the GPL can be applied should you wish to distribute
+ a combined work that includes FreeRTOS, without being obliged to provide
+ the source code for any proprietary components. See the licensing section
+ of http://www.FreeRTOS.org for full details of how and when the exception
+ can be applied.
+
+ ***************************************************************************
+ See http://www.FreeRTOS.org for documentation, latest information, license
+ and contact details. Please ensure to read the configuration and relevant
+ port sections of the online documentation.
+ ***************************************************************************
+*/
+
+
+/*
+ * startup.c
+ * Author Jefferson L Smith, Robotronics Inc.
+ *
+ * __premain() is the startup code to init hardware and ram to execute the
+ * C application.
+ *
+ */
+
+#include <sys/ports.h>
+#include "cpu.h"
+
+void ATTR_NEAR __premain (void);
+
+void
+__premain (void)
+{
+ // in case special mode enabled, avoid conflict on PORTE
+ PEAR |= NECLK;
+ // bgnd mode stops COP and RTI clocks
+ COPCTL = RSBCK;
+ // stops TCNT counter when debugging stops
+ TSCR1 |= (1<<5); // TFRZ
+
+ // PLL
+ CLKSEL = 0; // disable PLL to configure
+ // xtal 16MHz, bus 24MHz
+ SYNR = 3 - 1;
+ REFDV = 2 - 1;
+ while (!(CRGFLG & 0x08)) // wait for PLL LOCK
+ cop_optional_reset();
+ CLKSEL |= 0x80; // use PLL
+
+ // init switch inputs
+ PERH = 0xff; // pullups
+
+ // outputs
+#if PORT_LED==M6811_PORTB //PORTB
+ DDRB = 0xff; // init LED
+#elif PORT_LED==M6811_PORTA //PORTA
+ DDRA = 0xff;
+#elif PORT_LED==M6811_PTT //PTT
+ DDRT = 0xff;
+#elif PORT_LED==M6811_PTM //PTM
+ DDRM = 0xff;
+#elif PORT_LED==M6811_PTP //PTP
+ DDRP = 0xff;
+#elif PORT_LED==M6811_PTH //PTH
+ DDRH = 0xff;
+#endif
+
+}
+
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