/* | |
FreeRTOS.org V5.1.2 - Copyright (C) 2003-2009 Richard Barry. | |
This file is part of the FreeRTOS.org distribution. | |
FreeRTOS.org 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.org 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.org; 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.org, without being obliged to provide | |
the source code for any proprietary components. See the licensing section | |
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*************************************************************************** | |
*************************************************************************** | |
* * | |
* Get the FreeRTOS eBook! See http://www.FreeRTOS.org/Documentation * | |
* * | |
* This is a concise, step by step, 'hands on' guide that describes both * | |
* general multitasking concepts and FreeRTOS specifics. It presents and * | |
* explains numerous examples that are written using the FreeRTOS API. * | |
* Full source code for all the examples is provided in an accompanying * | |
* .zip file. * | |
* * | |
*************************************************************************** | |
*************************************************************************** | |
Please ensure to read the configuration and relevant port sections of the | |
online documentation. | |
http://www.FreeRTOS.org - Documentation, latest information, license and | |
contact details. | |
http://www.SafeRTOS.com - A version that is certified for use in safety | |
critical systems. | |
http://www.OpenRTOS.com - Commercial support, development, porting, | |
licensing and training services. | |
*/ | |
/* | |
* 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 | |
} | |