/* | |
FreeRTOS V7.1.0 - Copyright (C) 2011 Real Time Engineers Ltd. | |
*************************************************************************** | |
* * | |
* FreeRTOS tutorial books are available in pdf and paperback. * | |
* Complete, revised, and edited pdf reference manuals are also * | |
* available. * | |
* * | |
* Purchasing FreeRTOS documentation will not only help you, by * | |
* ensuring you get running as quickly as possible and with an * | |
* in-depth knowledge of how to use FreeRTOS, it will also help * | |
* the FreeRTOS project to continue with its mission of providing * | |
* professional grade, cross platform, de facto standard solutions * | |
* for microcontrollers - completely free of charge! * | |
* * | |
* >>> See http://www.FreeRTOS.org/Documentation for details. <<< * | |
* * | |
* Thank you for using FreeRTOS, and thank you for your support! * | |
* * | |
*************************************************************************** | |
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 (version 2) as published by the | |
Free Software Foundation AND MODIFIED BY the FreeRTOS exception. | |
>>>NOTE<<< The modification to the GPL is included to allow you to | |
distribute a combined work that includes FreeRTOS without being obliged to | |
provide the source code for proprietary components outside of the FreeRTOS | |
kernel. 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 and the FreeRTOS license exception along with FreeRTOS; if not it | |
can be viewed here: http://www.freertos.org/a00114.html and also obtained | |
by writing to Richard Barry, contact details for whom are available on the | |
FreeRTOS WEB site. | |
1 tab == 4 spaces! | |
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 | |
} | |