/* | |
* FreeRTOS Kernel V10.0.1 | |
* Copyright (C) 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved. | |
* | |
* Permission is hereby granted, free of charge, to any person obtaining a copy of | |
* this software and associated documentation files (the "Software"), to deal in | |
* the Software without restriction, including without limitation the rights to | |
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of | |
* the Software, and to permit persons to whom the Software is furnished to do so, | |
* subject to the following conditions: | |
* | |
* The above copyright notice and this permission notice shall be included in all | |
* copies or substantial portions of the Software. | |
* | |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS | |
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR | |
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER | |
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
* | |
* http://www.FreeRTOS.org | |
* http://aws.amazon.com/freertos | |
* | |
* 1 tab == 4 spaces! | |
*/ | |
/* | |
* Provides the port specific part of the standard IntQ test, which is | |
* implemented in FreeRTOS/Demo/Common/Minimal/IntQueue.c. Three HPET timers | |
* are used to generate the interrupts. The timers are configured in | |
* prvSetupHardware(), in main.c. | |
*/ | |
/* Scheduler includes. */ | |
#include "FreeRTOS.h" | |
/* Demo includes. */ | |
#include "IntQueueTimer.h" | |
#include "IntQueue.h" | |
/* | |
* Prototypes of the callback functions which are called from the HPET timer | |
* support file. For demonstration purposes, timer 0 and timer 1 are standard | |
* C functions that use the central interrupt handler, and are installed using | |
* xPortRegisterCInterruptHandler() - and timer 2 uses its own interrupt entry | |
* asm wrapper code and is installed using xPortInstallInterruptHandler(). For | |
* convenience the asm wrapper which calls vApplicationHPETTimer1Handler(), is | |
* implemented in RegTest.S. See | |
* http://www.freertos.org/RTOS_Intel_Quark_Galileo_GCC.html#interrupts for more | |
* details. | |
*/ | |
void vApplicationHPETTimer0Handler( void ); | |
void vApplicationHPETTimer1Handler( void ); | |
void vApplicationHPETTimer2Handler( void ); | |
/* | |
* Set to pdTRUE when vInitialiseTimerForIntQueueTest() is called so the timer | |
* callback functions know the scheduler is running and the tests can run. | |
*/ | |
static volatile BaseType_t xSchedulerRunning = pdFALSE; | |
/* Used to count the nesting depth to ensure the test is testing what it is | |
intended to test. */ | |
static volatile uint32_t ulMaxInterruptNesting = 0; | |
extern volatile uint32_t ulInterruptNesting; | |
/*-----------------------------------------------------------*/ | |
void vInitialiseTimerForIntQueueTest( void ) | |
{ | |
/* The HPET timers are set up in main(), before the scheduler is started, | |
so there is nothing to do here other than note the scheduler is now running. | |
This could be done by calling a FreeRTOS API function, but its convenient | |
and efficient just to store the fact in a file scope variable. */ | |
xSchedulerRunning = pdTRUE; | |
} | |
/*-----------------------------------------------------------*/ | |
void vApplicationHPETTimer0Handler( void ) | |
{ | |
BaseType_t xHigherPriorityTaskWoken; | |
if( xSchedulerRunning != pdFALSE ) | |
{ | |
if( ulInterruptNesting > ulMaxInterruptNesting ) | |
{ | |
ulMaxInterruptNesting = ulInterruptNesting; | |
} | |
xHigherPriorityTaskWoken = xFirstTimerHandler(); | |
portYIELD_FROM_ISR( xHigherPriorityTaskWoken ); | |
} | |
} | |
/*-----------------------------------------------------------*/ | |
void vApplicationHPETTimer1Handler( void ) | |
{ | |
BaseType_t xHigherPriorityTaskWoken; | |
if( xSchedulerRunning != pdFALSE ) | |
{ | |
if( ulInterruptNesting > ulMaxInterruptNesting ) | |
{ | |
ulMaxInterruptNesting = ulInterruptNesting; | |
} | |
xHigherPriorityTaskWoken = xSecondTimerHandler(); | |
portYIELD_FROM_ISR( xHigherPriorityTaskWoken ); | |
} | |
} | |
/*-----------------------------------------------------------*/ | |
void vApplicationHPETTimer2Handler( void ) | |
{ | |
if( ulInterruptNesting > ulMaxInterruptNesting ) | |
{ | |
ulMaxInterruptNesting = ulInterruptNesting; | |
} | |
} | |