Pierre Provent / USBHost

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Dependents:   TEST_USB_Nucleo_F429ZI Essais_USB_Nucleo_F429ZI SID_V3_Nucleo_F429ZI SID_V4_Nucleo_F429ZI_copy

mbed-rtos/rtx/TARGET_ARM7/rt_Time.c@0:77ca32e8e04e, 2020-09-25 (annotated)

Committer:
pierreprovent
Date:
Fri Sep 25 10:17:49 2020 +0000
Revision:
0:77ca32e8e04e
Programme acquisition en enregistrement sur clef USB carte Nucleo F429ZI cours ELE118 Cnam

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pierreprovent 0:77ca32e8e04e 1 /*----------------------------------------------------------------------------
pierreprovent 0:77ca32e8e04e 2 * RL-ARM - RTX
pierreprovent 0:77ca32e8e04e 3 *----------------------------------------------------------------------------
pierreprovent 0:77ca32e8e04e 4 * Name: RT_TIME.C
pierreprovent 0:77ca32e8e04e 5 * Purpose: Delay and interval wait functions
pierreprovent 0:77ca32e8e04e 6 * Rev.: V4.60
pierreprovent 0:77ca32e8e04e 7 *----------------------------------------------------------------------------
pierreprovent 0:77ca32e8e04e 8 *
pierreprovent 0:77ca32e8e04e 9 * Copyright (c) 1999-2009 KEIL, 2009-2015 ARM Germany GmbH
pierreprovent 0:77ca32e8e04e 10 * All rights reserved.
pierreprovent 0:77ca32e8e04e 11 * Redistribution and use in source and binary forms, with or without
pierreprovent 0:77ca32e8e04e 12 * modification, are permitted provided that the following conditions are met:
pierreprovent 0:77ca32e8e04e 13 * - Redistributions of source code must retain the above copyright
pierreprovent 0:77ca32e8e04e 14 * notice, this list of conditions and the following disclaimer.
pierreprovent 0:77ca32e8e04e 15 * - Redistributions in binary form must reproduce the above copyright
pierreprovent 0:77ca32e8e04e 16 * notice, this list of conditions and the following disclaimer in the
pierreprovent 0:77ca32e8e04e 17 * documentation and/or other materials provided with the distribution.
pierreprovent 0:77ca32e8e04e 18 * - Neither the name of ARM nor the names of its contributors may be used
pierreprovent 0:77ca32e8e04e 19 * to endorse or promote products derived from this software without
pierreprovent 0:77ca32e8e04e 20 * specific prior written permission.
pierreprovent 0:77ca32e8e04e 21 *
pierreprovent 0:77ca32e8e04e 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
pierreprovent 0:77ca32e8e04e 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
pierreprovent 0:77ca32e8e04e 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
pierreprovent 0:77ca32e8e04e 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
pierreprovent 0:77ca32e8e04e 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
pierreprovent 0:77ca32e8e04e 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
pierreprovent 0:77ca32e8e04e 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
pierreprovent 0:77ca32e8e04e 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
pierreprovent 0:77ca32e8e04e 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
pierreprovent 0:77ca32e8e04e 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
pierreprovent 0:77ca32e8e04e 32 * POSSIBILITY OF SUCH DAMAGE.
pierreprovent 0:77ca32e8e04e 33 *---------------------------------------------------------------------------*/
pierreprovent 0:77ca32e8e04e 34
pierreprovent 0:77ca32e8e04e 35 #include "rt_TypeDef.h"
pierreprovent 0:77ca32e8e04e 36 #include "RTX_Conf.h"
pierreprovent 0:77ca32e8e04e 37 #include "rt_Task.h"
pierreprovent 0:77ca32e8e04e 38 #include "rt_Time.h"
pierreprovent 0:77ca32e8e04e 39
pierreprovent 0:77ca32e8e04e 40 /*----------------------------------------------------------------------------
pierreprovent 0:77ca32e8e04e 41 * Global Variables
pierreprovent 0:77ca32e8e04e 42 *---------------------------------------------------------------------------*/
pierreprovent 0:77ca32e8e04e 43
pierreprovent 0:77ca32e8e04e 44 /* Free running system tick counter */
pierreprovent 0:77ca32e8e04e 45 U32 os_time;
pierreprovent 0:77ca32e8e04e 46
pierreprovent 0:77ca32e8e04e 47
pierreprovent 0:77ca32e8e04e 48 /*----------------------------------------------------------------------------
pierreprovent 0:77ca32e8e04e 49 * Functions
pierreprovent 0:77ca32e8e04e 50 *---------------------------------------------------------------------------*/
pierreprovent 0:77ca32e8e04e 51
pierreprovent 0:77ca32e8e04e 52
pierreprovent 0:77ca32e8e04e 53 /*--------------------------- rt_time_get -----------------------------------*/
pierreprovent 0:77ca32e8e04e 54
pierreprovent 0:77ca32e8e04e 55 U32 rt_time_get (void) {
pierreprovent 0:77ca32e8e04e 56 /* Get system time tick */
pierreprovent 0:77ca32e8e04e 57 return (os_time);
pierreprovent 0:77ca32e8e04e 58 }
pierreprovent 0:77ca32e8e04e 59
pierreprovent 0:77ca32e8e04e 60
pierreprovent 0:77ca32e8e04e 61 /*--------------------------- rt_dly_wait -----------------------------------*/
pierreprovent 0:77ca32e8e04e 62
pierreprovent 0:77ca32e8e04e 63 void rt_dly_wait (U16 delay_time) {
pierreprovent 0:77ca32e8e04e 64 /* Delay task by "delay_time" */
pierreprovent 0:77ca32e8e04e 65 rt_block (delay_time, WAIT_DLY);
pierreprovent 0:77ca32e8e04e 66 }
pierreprovent 0:77ca32e8e04e 67
pierreprovent 0:77ca32e8e04e 68
pierreprovent 0:77ca32e8e04e 69 /*--------------------------- rt_itv_set ------------------------------------*/
pierreprovent 0:77ca32e8e04e 70
pierreprovent 0:77ca32e8e04e 71 void rt_itv_set (U16 interval_time) {
pierreprovent 0:77ca32e8e04e 72 /* Set interval length and define start of first interval */
pierreprovent 0:77ca32e8e04e 73 os_tsk.run->interval_time = interval_time;
pierreprovent 0:77ca32e8e04e 74 os_tsk.run->delta_time = interval_time + (U16)os_time;
pierreprovent 0:77ca32e8e04e 75 }
pierreprovent 0:77ca32e8e04e 76
pierreprovent 0:77ca32e8e04e 77
pierreprovent 0:77ca32e8e04e 78 /*--------------------------- rt_itv_wait -----------------------------------*/
pierreprovent 0:77ca32e8e04e 79
pierreprovent 0:77ca32e8e04e 80 void rt_itv_wait (void) {
pierreprovent 0:77ca32e8e04e 81 /* Wait for interval end and define start of next one */
pierreprovent 0:77ca32e8e04e 82 U16 delta;
pierreprovent 0:77ca32e8e04e 83
pierreprovent 0:77ca32e8e04e 84 delta = os_tsk.run->delta_time - (U16)os_time;
pierreprovent 0:77ca32e8e04e 85 os_tsk.run->delta_time += os_tsk.run->interval_time;
pierreprovent 0:77ca32e8e04e 86 if ((delta & 0x8000) == 0) {
pierreprovent 0:77ca32e8e04e 87 rt_block (delta, WAIT_ITV);
pierreprovent 0:77ca32e8e04e 88 }
pierreprovent 0:77ca32e8e04e 89 }
pierreprovent 0:77ca32e8e04e 90
pierreprovent 0:77ca32e8e04e 91 /*----------------------------------------------------------------------------
pierreprovent 0:77ca32e8e04e 92 * end of file
pierreprovent 0:77ca32e8e04e 93 *---------------------------------------------------------------------------*/
pierreprovent 0:77ca32e8e04e 94