mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-04-24 23:42:10 -04:00
241 lines
8.4 KiB
C
241 lines
8.4 KiB
C
/*
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* FreeRTOS Kernel V10.2.0
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* Copyright (C) 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* http://www.FreeRTOS.org
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* http://aws.amazon.com/freertos
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*
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* 1 tab == 4 spaces!
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*/
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/******************************************************************************
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* This project provides two demo applications. A simple blinky style project,
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* and a more comprehensive test and demo application. The
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* mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting (defined in this file) is used to
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* select between the two. The simply blinky demo is implemented and described
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* in main_blinky.c. The more comprehensive test and demo application is
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* implemented and described in main_full.c.
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*
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* This file implements the code that is not demo specific, including the
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* hardware setup and FreeRTOS hook functions.
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*****************************************************************************/
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/* Kernel includes. */
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#include "FreeRTOS.h"
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#include "task.h"
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#include "queue.h"
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#include "timers.h"
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/* Target includes. */
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#include "appcfg.h"
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#include "MEC14xx/mec14xx.h"
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#include "MEC14xx/mec14xx_jtvic.h"
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#include "MEC14xx/mec14xx_bbled.h"
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#include "MEC14xx/mec14xx_girqs.h"
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/* Set mainCREATE_SIMPLE_BLINKY_DEMO_ONLY to one to run the simple blinky demo,
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or 0 to run the more comprehensive test and demo application. */
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#define mainCREATE_SIMPLE_BLINKY_DEMO_ONLY 0
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/*-----------------------------------------------------------*/
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/*
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* main_blinky() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 1.
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* main_full() is used when mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is set to 0.
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*/
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extern void main_blinky( void );
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extern void main_full( void );
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/*
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* Performs any hardware setup necessary.
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*/
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static void __attribute__((nomips16)) prvSetupHardware( void );
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/*
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* Add some thread safety to the LED toggle function.
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*/
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void vToggleLED( uint8_t ucLED );
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/*-----------------------------------------------------------*/
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int main( void )
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{
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/* Perform any hardware initialisation necessary. */
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prvSetupHardware();
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/* The mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting is described at the top
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of this file. */
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#if mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1
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{
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main_blinky();
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}
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#else
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{
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main_full();
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}
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#endif
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/* Should never be reached. */
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return 0;
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}
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/*-----------------------------------------------------------*/
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void vToggleLED( uint8_t ucLED )
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{
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taskENTER_CRITICAL();
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{
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led_out_toggle( ucLED );
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}
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taskEXIT_CRITICAL();
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}
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/*-----------------------------------------------------------*/
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static void __attribute__((nomips16)) prvSetupHardware( void )
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{
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volatile uint32_t ulTemp;
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/* Interrupts are automatically re-enabled when the scheduler is started. */
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__asm volatile( "di" );
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/* Enable M14K Vector Pre-fetch: CP0.IntCtl b[22]=1
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IRET (interrupt chaining): b[21]=1
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Enable Auto-Prolog: b[14]=1 */
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ulTemp = _CP0_GET_INTCTL();
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ulTemp |= ( 1ul << 22 ) + ( 1ul << 21 ) + ( 1ul << 14 );
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_CP0_SET_INTCTL( ulTemp );
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/* Configure 32KHz for Switched Clock Source always ON
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b[ 0 ] = XOSEL = 1
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b[ 1 ] = EXT_32K_OSC_EN = 1
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b[ 2 ] = INT_32K_OSC_EN = 1
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b[ 3 ] = INT_32K_VTR_PWR_WELL_EMUL = 0
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b[ 4 ] = 32K_SWITCHER_CTRL = 0 */
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VBAT_REGS->CLOCK_ENABLE = 0x07;
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ulTemp = 256;
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while (ulTemp--)
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{
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__asm volatile( "NOP" );
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__asm volatile( "NOP" );
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__asm volatile( "NOP" );
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__asm volatile( "NOP" );
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}
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/* Disaggregate GIRQ23 & GIRQ24 for FreeRTOS. Second parameter is a bit-map
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for each GIRQ where
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0 = Aggregated, 1 = Dis-aggregate
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Bit position = GIRQ_Number - 8
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Example: GIRQ23 ( 23 - 8 ) = 15
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Dis-aggregate GIRQ23 & GIRQ24
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The symbols JTVIC_DISAGR_BITMAP is generated in header file mec14xx_girqm.h
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Each disaggregated interrupt handler is spaced 8-bytes apart starting at
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base address for that GIRQ. */
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jtvic_init( dflt_ih_table, ( JTVIC_DISAGR_BITMAP ), ( JTVIC_FLAG_DISAGR_SPACING_8 ) );
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/* Initialise the LEDs. */
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for( ulTemp = 0; ulTemp < LED_ID_MAX; ulTemp++ )
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{
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led_sleep_en( ulTemp, ADISABLE );
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led_init( ulTemp );
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led_out_high( ulTemp );
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}
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}
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/*-----------------------------------------------------------*/
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void vApplicationMallocFailedHook( void )
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{
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/* vApplicationMallocFailedHook() will only be called if
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configUSE_MALLOC_FAILED_HOOK is set to 1 in FreeRTOSConfig.h. It is a hook
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function that will get called if a call to pvPortMalloc() fails.
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pvPortMalloc() is called internally by the kernel whenever a task, queue,
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timer or semaphore is created. It is also called by various parts of the
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demo application. If heap_1.c or heap_2.c are used, then the size of the
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heap available to pvPortMalloc() is defined by configTOTAL_HEAP_SIZE in
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FreeRTOSConfig.h, and the xPortGetFreeHeapSize() API function can be used
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to query the size of free heap space that remains (although it does not
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provide information on how the remaining heap might be fragmented). */
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taskDISABLE_INTERRUPTS();
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for( ;; );
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}
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/*-----------------------------------------------------------*/
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void vApplicationIdleHook( void )
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{
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/* vApplicationIdleHook() will only be called if configUSE_IDLE_HOOK is set
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to 1 in FreeRTOSConfig.h. It will be called on each iteration of the idle
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task. It is essential that code added to this hook function never attempts
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to block in any way (for example, call xQueueReceive() with a block time
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specified, or call vTaskDelay()). If the application makes use of the
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vTaskDelete() API function (as this demo application does) then it is also
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important that vApplicationIdleHook() is permitted to return to its calling
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function, because it is the responsibility of the idle task to clean up
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memory allocated by the kernel to any task that has since been deleted. */
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}
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/*-----------------------------------------------------------*/
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void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
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{
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( void ) pcTaskName;
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( void ) pxTask;
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/* Run time task stack overflow checking is performed if
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configCHECK_FOR_STACK_OVERFLOW is defined to 1 or 2. This hook function is
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called if a task stack overflow is detected. Note the system/interrupt
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stack is not checked. */
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taskDISABLE_INTERRUPTS();
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for( ;; );
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}
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/*-----------------------------------------------------------*/
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void vApplicationTickHook( void )
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{
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/* This function will be called by each tick interrupt if
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configUSE_TICK_HOOK is set to 1 in FreeRTOSConfig.h. User code can be
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added here, but the tick hook is called from an interrupt context, so
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code must not attempt to block, and only the interrupt safe FreeRTOS API
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functions can be used (those that end in FromISR()). */
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}
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/*-----------------------------------------------------------*/
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void vAssertCalled( const char * pcFile, unsigned long ulLine )
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{
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volatile char *pcFileName;
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volatile unsigned long ulLineNumber;
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/* Prevent things that are useful to view in the debugger from being
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optimised away. */
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pcFileName = ( char * ) pcFile;
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( void ) pcFileName;
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ulLineNumber = ulLine;
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/* Set ulLineNumber to 0 in the debugger to break out of this loop and
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return to the line that triggered the assert. */
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while( ulLineNumber != 0 )
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{
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__asm volatile( "NOP" );
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__asm volatile( "NOP" );
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__asm volatile( "NOP" );
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__asm volatile( "NOP" );
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__asm volatile( "NOP" );
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}
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}
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