Eric Patterson / mbed-rtos

Fork of official mbed Real Time Operating System based on the RTX implementation of the CMSIS-RTOS API open standard.

Dependents:   Final_Coffee_Roaster

Fork of mbed-rtos by mbed official

rtx/rt_Time.c@11:db1fc233faa9, 2013-04-30 (annotated)

Committer:
emilmont
Date:
Tue Apr 30 10:51:19 2013 +0000
Revision:
11:db1fc233faa9
Parent:
6:350b53afb889
Child:
31:015df9e602b6
In the Keil MDK toolchain "RTX_Config.h" is a special system library header file

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 6:350b53afb889 1 /*----------------------------------------------------------------------------
emilmont 6:350b53afb889 2 * RL-ARM - RTX
emilmont 6:350b53afb889 3 *----------------------------------------------------------------------------
emilmont 6:350b53afb889 4 * Name: RT_TIME.C
emilmont 6:350b53afb889 5 * Purpose: Delay and interval wait functions
emilmont 6:350b53afb889 6 * Rev.: V4.60
emilmont 6:350b53afb889 7 *----------------------------------------------------------------------------
emilmont 6:350b53afb889 8 *
emilmont 6:350b53afb889 9 * Copyright (c) 1999-2009 KEIL, 2009-2012 ARM Germany GmbH
emilmont 6:350b53afb889 10 * All rights reserved.
emilmont 6:350b53afb889 11 * Redistribution and use in source and binary forms, with or without
emilmont 6:350b53afb889 12 * modification, are permitted provided that the following conditions are met:
emilmont 6:350b53afb889 13 * - Redistributions of source code must retain the above copyright
emilmont 6:350b53afb889 14 * notice, this list of conditions and the following disclaimer.
emilmont 6:350b53afb889 15 * - Redistributions in binary form must reproduce the above copyright
emilmont 6:350b53afb889 16 * notice, this list of conditions and the following disclaimer in the
emilmont 6:350b53afb889 17 * documentation and/or other materials provided with the distribution.
emilmont 6:350b53afb889 18 * - Neither the name of ARM nor the names of its contributors may be used
emilmont 6:350b53afb889 19 * to endorse or promote products derived from this software without
emilmont 6:350b53afb889 20 * specific prior written permission.
emilmont 6:350b53afb889 21 *
emilmont 6:350b53afb889 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
emilmont 6:350b53afb889 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
emilmont 6:350b53afb889 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
emilmont 6:350b53afb889 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
emilmont 6:350b53afb889 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
emilmont 6:350b53afb889 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
emilmont 6:350b53afb889 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
emilmont 6:350b53afb889 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
emilmont 6:350b53afb889 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
emilmont 6:350b53afb889 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
emilmont 6:350b53afb889 32 * POSSIBILITY OF SUCH DAMAGE.
emilmont 6:350b53afb889 33 *---------------------------------------------------------------------------*/
emilmont 6:350b53afb889 34
emilmont 6:350b53afb889 35 #include "rt_TypeDef.h"
emilmont 11:db1fc233faa9 36 #include "RTX_Conf.h"
emilmont 6:350b53afb889 37 #include "rt_Task.h"
emilmont 6:350b53afb889 38 #include "rt_Time.h"
emilmont 6:350b53afb889 39
emilmont 6:350b53afb889 40 /*----------------------------------------------------------------------------
emilmont 6:350b53afb889 41 * Global Variables
emilmont 6:350b53afb889 42 *---------------------------------------------------------------------------*/
emilmont 6:350b53afb889 43
emilmont 6:350b53afb889 44 /* Free running system tick counter */
emilmont 6:350b53afb889 45 U32 os_time;
emilmont 6:350b53afb889 46
emilmont 6:350b53afb889 47
emilmont 6:350b53afb889 48 /*----------------------------------------------------------------------------
emilmont 6:350b53afb889 49 * Functions
emilmont 6:350b53afb889 50 *---------------------------------------------------------------------------*/
emilmont 6:350b53afb889 51
emilmont 6:350b53afb889 52
emilmont 6:350b53afb889 53 /*--------------------------- rt_time_get -----------------------------------*/
emilmont 6:350b53afb889 54
emilmont 6:350b53afb889 55 U32 rt_time_get (void) {
emilmont 6:350b53afb889 56 /* Get system time tick */
emilmont 6:350b53afb889 57 return (os_time);
emilmont 6:350b53afb889 58 }
emilmont 6:350b53afb889 59
emilmont 6:350b53afb889 60
emilmont 6:350b53afb889 61 /*--------------------------- rt_dly_wait -----------------------------------*/
emilmont 6:350b53afb889 62
emilmont 6:350b53afb889 63 void rt_dly_wait (U16 delay_time) {
emilmont 6:350b53afb889 64 /* Delay task by "delay_time" */
emilmont 6:350b53afb889 65 rt_block (delay_time, WAIT_DLY);
emilmont 6:350b53afb889 66 }
emilmont 6:350b53afb889 67
emilmont 6:350b53afb889 68
emilmont 6:350b53afb889 69 /*--------------------------- rt_itv_set ------------------------------------*/
emilmont 6:350b53afb889 70
emilmont 6:350b53afb889 71 void rt_itv_set (U16 interval_time) {
emilmont 6:350b53afb889 72 /* Set interval length and define start of first interval */
emilmont 6:350b53afb889 73 os_tsk.run->interval_time = interval_time;
emilmont 6:350b53afb889 74 os_tsk.run->delta_time = interval_time + (U16)os_time;
emilmont 6:350b53afb889 75 }
emilmont 6:350b53afb889 76
emilmont 6:350b53afb889 77
emilmont 6:350b53afb889 78 /*--------------------------- rt_itv_wait -----------------------------------*/
emilmont 6:350b53afb889 79
emilmont 6:350b53afb889 80 void rt_itv_wait (void) {
emilmont 6:350b53afb889 81 /* Wait for interval end and define start of next one */
emilmont 6:350b53afb889 82 U16 delta;
emilmont 6:350b53afb889 83
emilmont 6:350b53afb889 84 delta = os_tsk.run->delta_time - (U16)os_time;
emilmont 6:350b53afb889 85 os_tsk.run->delta_time += os_tsk.run->interval_time;
emilmont 6:350b53afb889 86 if ((delta & 0x8000) == 0) {
emilmont 6:350b53afb889 87 rt_block (delta, WAIT_ITV);
emilmont 6:350b53afb889 88 }
emilmont 6:350b53afb889 89 }
emilmont 6:350b53afb889 90
emilmont 6:350b53afb889 91 /*----------------------------------------------------------------------------
emilmont 6:350b53afb889 92 * end of file
emilmont 6:350b53afb889 93 *---------------------------------------------------------------------------*/
emilmont 6:350b53afb889 94