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124 lines
4.9 KiB
C
124 lines
4.9 KiB
C
/*
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FreeRTOS V8.2.2 - Copyright (C) 2015 Real Time Engineers Ltd.
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All rights reserved
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VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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This file is part of the FreeRTOS distribution.
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FreeRTOS is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License (version 2) as published by the
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Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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***************************************************************************
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>>! NOTE: The modification to the GPL is included to allow you to !<<
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>>! distribute a combined work that includes FreeRTOS without being !<<
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>>! obliged to provide the source code for proprietary components !<<
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>>! outside of the FreeRTOS kernel. !<<
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***************************************************************************
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FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. Full license text is available on the following
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link: http://www.freertos.org/a00114.html
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***************************************************************************
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* *
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* FreeRTOS provides completely free yet professionally developed, *
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* robust, strictly quality controlled, supported, and cross *
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* platform software that is more than just the market leader, it *
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* is the industry's de facto standard. *
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* *
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* Help yourself get started quickly while simultaneously helping *
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* to support the FreeRTOS project by purchasing a FreeRTOS *
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* tutorial book, reference manual, or both: *
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* http://www.FreeRTOS.org/Documentation *
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* *
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***************************************************************************
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http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading
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the FAQ page "My application does not run, what could be wrong?". Have you
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defined configASSERT()?
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http://www.FreeRTOS.org/support - In return for receiving this top quality
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embedded software for free we request you assist our global community by
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participating in the support forum.
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http://www.FreeRTOS.org/training - Investing in training allows your team to
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be as productive as possible as early as possible. Now you can receive
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FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers
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Ltd, and the world's leading authority on the world's leading RTOS.
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http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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compatible FAT file system, and our tiny thread aware UDP/IP stack.
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http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
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Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.
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http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High
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Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS
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licenses offer ticketed support, indemnification and commercial middleware.
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http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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engineered and independently SIL3 certified version for use in safety and
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mission critical applications that require provable dependability.
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1 tab == 4 spaces!
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*/
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/*
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* startup.c
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* Author Jefferson L Smith, Robotronics Inc.
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*
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* __premain() is the startup code to init hardware and ram to execute the
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* C application.
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*
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*/
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#include <sys/ports.h>
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#include "cpu.h"
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void ATTR_NEAR __premain (void);
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void
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__premain (void)
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{
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// in case special mode enabled, avoid conflict on PORTE
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PEAR |= NECLK;
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// bgnd mode stops COP and RTI clocks
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COPCTL = RSBCK;
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// stops TCNT counter when debugging stops
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TSCR1 |= (1<<5); // TFRZ
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// PLL
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CLKSEL = 0; // disable PLL to configure
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// xtal 16MHz, bus 24MHz
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SYNR = 3 - 1;
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REFDV = 2 - 1;
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while (!(CRGFLG & 0x08)) // wait for PLL LOCK
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cop_optional_reset();
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CLKSEL |= 0x80; // use PLL
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// init switch inputs
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PERH = 0xff; // pullups
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// outputs
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#if PORT_LED==M6811_PORTB //PORTB
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DDRB = 0xff; // init LED
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#elif PORT_LED==M6811_PORTA //PORTA
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DDRA = 0xff;
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#elif PORT_LED==M6811_PTT //PTT
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DDRT = 0xff;
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#elif PORT_LED==M6811_PTM //PTM
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DDRM = 0xff;
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#elif PORT_LED==M6811_PTP //PTP
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DDRP = 0xff;
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#elif PORT_LED==M6811_PTH //PTH
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DDRH = 0xff;
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#endif
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}
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