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Add PIC32MEC14xx port and demo application.

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Richard Barry 2015-09-12 20:47:59 +00:00
parent f19497c3d6
commit a29dc8d6c6
103 changed files with 49682 additions and 6 deletions
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FreeRTOS/Demo/PIC32MEC14xx_MPLAB/src/main.c Normal file
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/*
FreeRTOS V8.2.2 - Copyright (C) 2015 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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. Full license text is available on the following
link: http://www.freertos.org/a00114.html
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that is more than just the market leader, it *
* is the industry's de facto standard. *
* *
* Help yourself get started quickly while simultaneously helping *
* to support the FreeRTOS project by purchasing a FreeRTOS *
* tutorial book, reference manual, or both: *
* http://www.FreeRTOS.org/Documentation *
* *
***************************************************************************
http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading
the FAQ page "My application does not run, what could be wrong?". Have you
defined configASSERT()?
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embedded software for free we request you assist our global community by
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Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.
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http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
1 tab == 4 spaces!
*/
/******************************************************************************
* This project provides two demo applications. A simple blinky style project,
* and a more comprehensive test and demo application. The
* mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting (defined in this file) is used to
* select between the two. The simply blinky demo is implemented and described
* in main_blinky.c. The more comprehensive test and demo application is
* implemented and described in main_full.c.
*
* This file implements the code that is not demo specific, including the
* hardware setup and FreeRTOS hook functions.
*****************************************************************************/
/* Kernel includes. */
#include "FreeRTOS.h"
#include "task.h"
#include "queue.h"
#include "timers.h"
/* Target includes. */
#include "appcfg.h"
#include "MEC14xx/mec14xx.h"
#include "MEC14xx/mec14xx_jtvic.h"
#include "MEC14xx/mec14xx_bbled.h"
#include "MEC14xx/mec14xx_girqs.h"
/* Set mainCREATE_SIMPLE_BLINKY_DEMO_ONLY to one to run the simple blinky demo,
or 0 to run the more comprehensive test and demo application. */
#define mainCREATE_SIMPLE_BLINKY_DEMO_ONLY 0
/*-----------------------------------------------------------*/
/*
* main_blinky() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 1.
* main_full() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 0.
*/
extern void main_blinky( void );
extern void main_full( void );
/*
* Performs any hardware setup necessary.
*/
static void __attribute__((nomips16)) prvSetupHardware( void );
/*
* Add some thread safety to the LED toggle function.
*/
void vToggleLED( uint8_t ucLED );
/*-----------------------------------------------------------*/
int main( void )
{
/* Perform any hardware initialisation necessary. */
prvSetupHardware();
/* The mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting is described at the top
of this file. */
#if mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1
{
main_blinky();
}
#else
{
main_full();
}
#endif
/* Should never be reached. */
return 0;
}
/*-----------------------------------------------------------*/
void vToggleLED( uint8_t ucLED )
{
taskENTER_CRITICAL();
{
led_out_toggle( ucLED );
}
taskEXIT_CRITICAL();
}
/*-----------------------------------------------------------*/
static void __attribute__((nomips16)) prvSetupHardware( void )
{
volatile uint32_t ulTemp;
/* Interrupts are automatically re-enabled when the scheduler is started. */
__asm volatile( "di" );
/* Enable M14K Vector Pre-fetch: CP0.IntCtl b[22]=1
IRET (interrupt chaining): b[21]=1
Enable Auto-Prolog: b[14]=1 */
ulTemp = _CP0_GET_INTCTL();
ulTemp |= ( 1ul << 22 ) + ( 1ul << 21 ) + ( 1ul << 14 );
_CP0_SET_INTCTL( ulTemp );
/* Configure 32KHz for Switched Clock Source always ON
b[ 0 ] = XOSEL = 1
b[ 1 ] = EXT_32K_OSC_EN = 1
b[ 2 ] = INT_32K_OSC_EN = 1
b[ 3 ] = INT_32K_VTR_PWR_WELL_EMUL = 0
b[ 4 ] = 32K_SWITCHER_CTRL = 0 */
VBAT_REGS->CLOCK_ENABLE = 0x07;
ulTemp = 256;
while (ulTemp--)
{
__asm volatile( "NOP" );
__asm volatile( "NOP" );
__asm volatile( "NOP" );
__asm volatile( "NOP" );
}
/* Disaggregate GIRQ23 & GIRQ24 for FreeRTOS. Second parameter is a bit-map
for each GIRQ where
0 = Aggregated, 1 = Dis-aggregate
Bit position = GIRQ_Number - 8
Example: GIRQ23 ( 23 - 8 ) = 15
Dis-aggregate GIRQ23 & GIRQ24
The symbols JTVIC_DISAGR_BITMAP is generated in header file mec14xx_girqm.h
Each disaggregated interrupt handler is spaced 8-bytes apart starting at
base address for that GIRQ. */
jtvic_init( dflt_ih_table, ( JTVIC_DISAGR_BITMAP ), ( JTVIC_FLAG_DISAGR_SPACING_8 ) );
/* Initialise the LEDs. */
for( ulTemp = 0; ulTemp < LED_ID_MAX; ulTemp++ )
{
led_sleep_en( ulTemp, ADISABLE );
led_init( ulTemp );
led_out_high( ulTemp );
}
}
/*-----------------------------------------------------------*/
void vApplicationMallocFailedHook( void )
{
/* vApplicationMallocFailedHook() will only be called if
configUSE_MALLOC_FAILED_HOOK is set to 1 in FreeRTOSConfig.h. It is a hook
function that will get called if a call to pvPortMalloc() fails.
pvPortMalloc() is called internally by the kernel whenever a task, queue,
timer or semaphore is created. It is also called by various parts of the
demo application. If heap_1.c or heap_2.c are used, then the size of the
heap available to pvPortMalloc() is defined by configTOTAL_HEAP_SIZE in
FreeRTOSConfig.h, and the xPortGetFreeHeapSize() API function can be used
to query the size of free heap space that remains (although it does not
provide information on how the remaining heap might be fragmented). */
taskDISABLE_INTERRUPTS();
for( ;; );
}
/*-----------------------------------------------------------*/
void vApplicationIdleHook( void )
{
/* vApplicationIdleHook() will only be called if configUSE_IDLE_HOOK is set
to 1 in FreeRTOSConfig.h. It will be called on each iteration of the idle
task. It is essential that code added to this hook function never attempts
to block in any way (for example, call xQueueReceive() with a block time
specified, or call vTaskDelay()). If the application makes use of the
vTaskDelete() API function (as this demo application does) then it is also
important that vApplicationIdleHook() is permitted to return to its calling
function, because it is the responsibility of the idle task to clean up
memory allocated by the kernel to any task that has since been deleted. */
}
/*-----------------------------------------------------------*/
void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
{
( void ) pcTaskName;
( void ) pxTask;
/* Run time task stack overflow checking is performed if
configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook function is
called if a task stack overflow is detected. Note the system/interrupt
stack is not checked. */
taskDISABLE_INTERRUPTS();
for( ;; );
}
/*-----------------------------------------------------------*/
void vApplicationTickHook( void )
{
/* This function will be called by each tick interrupt if
configUSE_TICK_HOOK is set to 1 in FreeRTOSConfig.h. User code can be
added here, but the tick hook is called from an interrupt context, so
code must not attempt to block, and only the interrupt safe FreeRTOS API
functions can be used (those that end in FromISR()). */
}
/*-----------------------------------------------------------*/
void vAssertCalled( const char * pcFile, unsigned long ulLine )
{
volatile char *pcFileName;
volatile unsigned long ulLineNumber;
/* Prevent things that are useful to view in the debugger from being
optimised away. */
pcFileName = ( char * ) pcFile;
( void ) pcFileName;
ulLineNumber = ulLine;
/* Set ulLineNumber to 0 in the debugger to break out of this loop and
return to the line that triggered the assert. */
while( ulLineNumber != 0 )
{
__asm volatile( "NOP" );
__asm volatile( "NOP" );
__asm volatile( "NOP" );
__asm volatile( "NOP" );
__asm volatile( "NOP" );
}
}