Alan Ffrench / Mbed 2 deprecated Experiment_2_5

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Dependencies:   mbed

mbed-rtos/rtx/rt_Time.c@0:52468b19aa21, 2020-07-29 (annotated)

Committer:
alanffrench
Date:
Wed Jul 29 18:51:38 2020 +0000
Revision:
0:52468b19aa21
Threads

Who changed what in which revision?

UserRevisionLine numberNew contents of line
alanffrench 0:52468b19aa21 1 /*----------------------------------------------------------------------------
alanffrench 0:52468b19aa21 2 * RL-ARM - RTX
alanffrench 0:52468b19aa21 3 *----------------------------------------------------------------------------
alanffrench 0:52468b19aa21 4 * Name: RT_TIME.C
alanffrench 0:52468b19aa21 5 * Purpose: Delay and interval wait functions
alanffrench 0:52468b19aa21 6 * Rev.: V4.60
alanffrench 0:52468b19aa21 7 *----------------------------------------------------------------------------
alanffrench 0:52468b19aa21 8 *
alanffrench 0:52468b19aa21 9 * Copyright (c) 1999-2009 KEIL, 2009-2012 ARM Germany GmbH
alanffrench 0:52468b19aa21 10 * All rights reserved.
alanffrench 0:52468b19aa21 11 * Redistribution and use in source and binary forms, with or without
alanffrench 0:52468b19aa21 12 * modification, are permitted provided that the following conditions are met:
alanffrench 0:52468b19aa21 13 * - Redistributions of source code must retain the above copyright
alanffrench 0:52468b19aa21 14 * notice, this list of conditions and the following disclaimer.
alanffrench 0:52468b19aa21 15 * - Redistributions in binary form must reproduce the above copyright
alanffrench 0:52468b19aa21 16 * notice, this list of conditions and the following disclaimer in the
alanffrench 0:52468b19aa21 17 * documentation and/or other materials provided with the distribution.
alanffrench 0:52468b19aa21 18 * - Neither the name of ARM nor the names of its contributors may be used
alanffrench 0:52468b19aa21 19 * to endorse or promote products derived from this software without
alanffrench 0:52468b19aa21 20 * specific prior written permission.
alanffrench 0:52468b19aa21 21 *
alanffrench 0:52468b19aa21 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
alanffrench 0:52468b19aa21 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
alanffrench 0:52468b19aa21 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
alanffrench 0:52468b19aa21 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
alanffrench 0:52468b19aa21 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
alanffrench 0:52468b19aa21 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
alanffrench 0:52468b19aa21 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
alanffrench 0:52468b19aa21 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
alanffrench 0:52468b19aa21 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
alanffrench 0:52468b19aa21 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
alanffrench 0:52468b19aa21 32 * POSSIBILITY OF SUCH DAMAGE.
alanffrench 0:52468b19aa21 33 *---------------------------------------------------------------------------*/
alanffrench 0:52468b19aa21 34
alanffrench 0:52468b19aa21 35 #include "rt_TypeDef.h"
alanffrench 0:52468b19aa21 36 #include "RTX_Config.h"
alanffrench 0:52468b19aa21 37 #include "rt_Task.h"
alanffrench 0:52468b19aa21 38 #include "rt_Time.h"
alanffrench 0:52468b19aa21 39
alanffrench 0:52468b19aa21 40 /*----------------------------------------------------------------------------
alanffrench 0:52468b19aa21 41 * Global Variables
alanffrench 0:52468b19aa21 42 *---------------------------------------------------------------------------*/
alanffrench 0:52468b19aa21 43
alanffrench 0:52468b19aa21 44 /* Free running system tick counter */
alanffrench 0:52468b19aa21 45 U32 os_time;
alanffrench 0:52468b19aa21 46
alanffrench 0:52468b19aa21 47
alanffrench 0:52468b19aa21 48 /*----------------------------------------------------------------------------
alanffrench 0:52468b19aa21 49 * Functions
alanffrench 0:52468b19aa21 50 *---------------------------------------------------------------------------*/
alanffrench 0:52468b19aa21 51
alanffrench 0:52468b19aa21 52
alanffrench 0:52468b19aa21 53 /*--------------------------- rt_time_get -----------------------------------*/
alanffrench 0:52468b19aa21 54
alanffrench 0:52468b19aa21 55 U32 rt_time_get (void) {
alanffrench 0:52468b19aa21 56 /* Get system time tick */
alanffrench 0:52468b19aa21 57 return (os_time);
alanffrench 0:52468b19aa21 58 }
alanffrench 0:52468b19aa21 59
alanffrench 0:52468b19aa21 60
alanffrench 0:52468b19aa21 61 /*--------------------------- rt_dly_wait -----------------------------------*/
alanffrench 0:52468b19aa21 62
alanffrench 0:52468b19aa21 63 void rt_dly_wait (U16 delay_time) {
alanffrench 0:52468b19aa21 64 /* Delay task by "delay_time" */
alanffrench 0:52468b19aa21 65 rt_block (delay_time, WAIT_DLY);
alanffrench 0:52468b19aa21 66 }
alanffrench 0:52468b19aa21 67
alanffrench 0:52468b19aa21 68
alanffrench 0:52468b19aa21 69 /*--------------------------- rt_itv_set ------------------------------------*/
alanffrench 0:52468b19aa21 70
alanffrench 0:52468b19aa21 71 void rt_itv_set (U16 interval_time) {
alanffrench 0:52468b19aa21 72 /* Set interval length and define start of first interval */
alanffrench 0:52468b19aa21 73 os_tsk.run->interval_time = interval_time;
alanffrench 0:52468b19aa21 74 os_tsk.run->delta_time = interval_time + (U16)os_time;
alanffrench 0:52468b19aa21 75 }
alanffrench 0:52468b19aa21 76
alanffrench 0:52468b19aa21 77
alanffrench 0:52468b19aa21 78 /*--------------------------- rt_itv_wait -----------------------------------*/
alanffrench 0:52468b19aa21 79
alanffrench 0:52468b19aa21 80 void rt_itv_wait (void) {
alanffrench 0:52468b19aa21 81 /* Wait for interval end and define start of next one */
alanffrench 0:52468b19aa21 82 U16 delta;
alanffrench 0:52468b19aa21 83
alanffrench 0:52468b19aa21 84 delta = os_tsk.run->delta_time - (U16)os_time;
alanffrench 0:52468b19aa21 85 os_tsk.run->delta_time += os_tsk.run->interval_time;
alanffrench 0:52468b19aa21 86 if ((delta & 0x8000) == 0) {
alanffrench 0:52468b19aa21 87 rt_block (delta, WAIT_ITV);
alanffrench 0:52468b19aa21 88 }
alanffrench 0:52468b19aa21 89 }
alanffrench 0:52468b19aa21 90
alanffrench 0:52468b19aa21 91 /*----------------------------------------------------------------------------
alanffrench 0:52468b19aa21 92 * end of file
alanffrench 0:52468b19aa21 93 *---------------------------------------------------------------------------*/
alanffrench 0:52468b19aa21 94