1 /* 2 * FreeRTOS Kernel V10.6.2 3 * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved. 4 * 5 * SPDX-License-Identifier: MIT 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a copy of 8 * this software and associated documentation files (the "Software"), to deal in 9 * the Software without restriction, including without limitation the rights to 10 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of 11 * the Software, and to permit persons to whom the Software is furnished to do so, 12 * subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in all 15 * copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS 19 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR 20 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER 21 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * https://www.FreeRTOS.org 25 * https://github.com/FreeRTOS 26 * 27 */ 28 29 /* 30 Changes from V3.0.0 31 + ISRcode pulled inline to reduce stack-usage. 32 33 + Added functionality to only call vTaskSwitchContext() once 34 when handling multiple interruptsources in a single interruptcall. 35 36 + Filename changed to a .c extension to allow stepping through code 37 using F7. 38 39 Changes from V3.0.1 40 */ 41 42 /* 43 * ISR for the tick. 44 * This increments the tick count and, if using the preemptive scheduler, 45 * performs a context switch. This must be identical to the manual 46 * context switch in how it stores the context of a task. 47 */ 48 49 #ifndef _FREERTOS_DRIVERS_TICK_ISRTICK_C 50 #define _FREERTOS_DRIVERS_TICK_ISRTICK_C 51 52 { 53 /* 54 * Was the interrupt the SystemClock? 55 */ 56 if( bCCP1IF && bCCP1IE ) 57 { 58 /* 59 * Reset the interrupt flag 60 */ 61 bCCP1IF = 0; 62 63 /* 64 * Maintain the tick count. 65 */ 66 if( xTaskIncrementTick() != pdFALSE ) 67 { 68 /* 69 * Ask for a switch to the highest priority task 70 * that is ready to run. 71 */ 72 uxSwitchRequested = pdTRUE; 73 } 74 } 75 } 76 77 #pragma wizcpp uselib "$__PATHNAME__/Tick.c" 78 79 #endif /* _FREERTOS_DRIVERS_TICK_ISRTICK_C */ 80
