TeamGyro / mbed-rtos

OS2

Dependents:   GYRO_MPU6050 Bluetooth_Powered_Multimeter_Using_STM32F429_and_RTOS fyp

rtx/TARGET_CORTEX_M/rt_Time.c@0:a7c449cd2d5a, 2020-02-03 (annotated)

Committer:
guilhemMBED
Date:
Mon Feb 03 13:41:14 2020 +0000
Revision:
0:a7c449cd2d5a
previous version;

Who changed what in which revision?

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guilhemMBED 0:a7c449cd2d5a 1 /*----------------------------------------------------------------------------
guilhemMBED 0:a7c449cd2d5a 2 * CMSIS-RTOS - RTX
guilhemMBED 0:a7c449cd2d5a 3 *----------------------------------------------------------------------------
guilhemMBED 0:a7c449cd2d5a 4 * Name: RT_TIME.C
guilhemMBED 0:a7c449cd2d5a 5 * Purpose: Delay and interval wait functions
guilhemMBED 0:a7c449cd2d5a 6 * Rev.: V4.79
guilhemMBED 0:a7c449cd2d5a 7 *----------------------------------------------------------------------------
guilhemMBED 0:a7c449cd2d5a 8 *
guilhemMBED 0:a7c449cd2d5a 9 * Copyright (c) 1999-2009 KEIL, 2009-2015 ARM Germany GmbH
guilhemMBED 0:a7c449cd2d5a 10 * All rights reserved.
guilhemMBED 0:a7c449cd2d5a 11 * Redistribution and use in source and binary forms, with or without
guilhemMBED 0:a7c449cd2d5a 12 * modification, are permitted provided that the following conditions are met:
guilhemMBED 0:a7c449cd2d5a 13 * - Redistributions of source code must retain the above copyright
guilhemMBED 0:a7c449cd2d5a 14 * notice, this list of conditions and the following disclaimer.
guilhemMBED 0:a7c449cd2d5a 15 * - Redistributions in binary form must reproduce the above copyright
guilhemMBED 0:a7c449cd2d5a 16 * notice, this list of conditions and the following disclaimer in the
guilhemMBED 0:a7c449cd2d5a 17 * documentation and/or other materials provided with the distribution.
guilhemMBED 0:a7c449cd2d5a 18 * - Neither the name of ARM nor the names of its contributors may be used
guilhemMBED 0:a7c449cd2d5a 19 * to endorse or promote products derived from this software without
guilhemMBED 0:a7c449cd2d5a 20 * specific prior written permission.
guilhemMBED 0:a7c449cd2d5a 21 *
guilhemMBED 0:a7c449cd2d5a 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
guilhemMBED 0:a7c449cd2d5a 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
guilhemMBED 0:a7c449cd2d5a 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
guilhemMBED 0:a7c449cd2d5a 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
guilhemMBED 0:a7c449cd2d5a 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
guilhemMBED 0:a7c449cd2d5a 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
guilhemMBED 0:a7c449cd2d5a 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
guilhemMBED 0:a7c449cd2d5a 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
guilhemMBED 0:a7c449cd2d5a 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
guilhemMBED 0:a7c449cd2d5a 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
guilhemMBED 0:a7c449cd2d5a 32 * POSSIBILITY OF SUCH DAMAGE.
guilhemMBED 0:a7c449cd2d5a 33 *---------------------------------------------------------------------------*/
guilhemMBED 0:a7c449cd2d5a 34
guilhemMBED 0:a7c449cd2d5a 35 #include "rt_TypeDef.h"
guilhemMBED 0:a7c449cd2d5a 36 #include "RTX_Config.h"
guilhemMBED 0:a7c449cd2d5a 37 #include "rt_Task.h"
guilhemMBED 0:a7c449cd2d5a 38 #include "rt_Time.h"
guilhemMBED 0:a7c449cd2d5a 39
guilhemMBED 0:a7c449cd2d5a 40 /*----------------------------------------------------------------------------
guilhemMBED 0:a7c449cd2d5a 41 * Global Variables
guilhemMBED 0:a7c449cd2d5a 42 *---------------------------------------------------------------------------*/
guilhemMBED 0:a7c449cd2d5a 43
guilhemMBED 0:a7c449cd2d5a 44 /* Free running system tick counter */
guilhemMBED 0:a7c449cd2d5a 45 U32 os_time;
guilhemMBED 0:a7c449cd2d5a 46
guilhemMBED 0:a7c449cd2d5a 47
guilhemMBED 0:a7c449cd2d5a 48 /*----------------------------------------------------------------------------
guilhemMBED 0:a7c449cd2d5a 49 * Functions
guilhemMBED 0:a7c449cd2d5a 50 *---------------------------------------------------------------------------*/
guilhemMBED 0:a7c449cd2d5a 51
guilhemMBED 0:a7c449cd2d5a 52
guilhemMBED 0:a7c449cd2d5a 53 /*--------------------------- rt_time_get -----------------------------------*/
guilhemMBED 0:a7c449cd2d5a 54
guilhemMBED 0:a7c449cd2d5a 55 U32 rt_time_get (void) {
guilhemMBED 0:a7c449cd2d5a 56 /* Get system time tick */
guilhemMBED 0:a7c449cd2d5a 57 return (os_time);
guilhemMBED 0:a7c449cd2d5a 58 }
guilhemMBED 0:a7c449cd2d5a 59
guilhemMBED 0:a7c449cd2d5a 60
guilhemMBED 0:a7c449cd2d5a 61 /*--------------------------- rt_dly_wait -----------------------------------*/
guilhemMBED 0:a7c449cd2d5a 62
guilhemMBED 0:a7c449cd2d5a 63 void rt_dly_wait (U16 delay_time) {
guilhemMBED 0:a7c449cd2d5a 64 /* Delay task by "delay_time" */
guilhemMBED 0:a7c449cd2d5a 65 rt_block (delay_time, WAIT_DLY);
guilhemMBED 0:a7c449cd2d5a 66 }
guilhemMBED 0:a7c449cd2d5a 67
guilhemMBED 0:a7c449cd2d5a 68
guilhemMBED 0:a7c449cd2d5a 69 /*--------------------------- rt_itv_set ------------------------------------*/
guilhemMBED 0:a7c449cd2d5a 70
guilhemMBED 0:a7c449cd2d5a 71 void rt_itv_set (U16 interval_time) {
guilhemMBED 0:a7c449cd2d5a 72 /* Set interval length and define start of first interval */
guilhemMBED 0:a7c449cd2d5a 73 os_tsk.run->interval_time = interval_time;
guilhemMBED 0:a7c449cd2d5a 74 os_tsk.run->delta_time = interval_time + (U16)os_time;
guilhemMBED 0:a7c449cd2d5a 75 }
guilhemMBED 0:a7c449cd2d5a 76
guilhemMBED 0:a7c449cd2d5a 77
guilhemMBED 0:a7c449cd2d5a 78 /*--------------------------- rt_itv_wait -----------------------------------*/
guilhemMBED 0:a7c449cd2d5a 79
guilhemMBED 0:a7c449cd2d5a 80 void rt_itv_wait (void) {
guilhemMBED 0:a7c449cd2d5a 81 /* Wait for interval end and define start of next one */
guilhemMBED 0:a7c449cd2d5a 82 U16 delta;
guilhemMBED 0:a7c449cd2d5a 83
guilhemMBED 0:a7c449cd2d5a 84 delta = os_tsk.run->delta_time - (U16)os_time;
guilhemMBED 0:a7c449cd2d5a 85 os_tsk.run->delta_time += os_tsk.run->interval_time;
guilhemMBED 0:a7c449cd2d5a 86 if ((delta & 0x8000U) == 0U) {
guilhemMBED 0:a7c449cd2d5a 87 rt_block (delta, WAIT_ITV);
guilhemMBED 0:a7c449cd2d5a 88 }
guilhemMBED 0:a7c449cd2d5a 89 }
guilhemMBED 0:a7c449cd2d5a 90
guilhemMBED 0:a7c449cd2d5a 91 /*----------------------------------------------------------------------------
guilhemMBED 0:a7c449cd2d5a 92 * end of file
guilhemMBED 0:a7c449cd2d5a 93 *---------------------------------------------------------------------------*/