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git.gir.st - tmk_keyboard.git/blob - tmk_core/tool/mbed/mbed-sdk/libraries/rtos/rtx/TARGET_CORTEX_A/rt_Time.c
1 /*----------------------------------------------------------------------------
3 *----------------------------------------------------------------------------
5 * Purpose: Delay and interval wait functions
7 *----------------------------------------------------------------------------
9 * Copyright (c) 1999-2009 KEIL, 2009-2012 ARM Germany GmbH
10 * All rights reserved.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions are met:
13 * - Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * - Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * - Neither the name of ARM nor the names of its contributors may be used
19 * to endorse or promote products derived from this software without
20 * specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
33 *---------------------------------------------------------------------------*/
35 #include "rt_TypeDef.h"
36 #include "RTX_Config.h"
40 /*----------------------------------------------------------------------------
42 *---------------------------------------------------------------------------*/
44 /* Free running system tick counter */
48 /*----------------------------------------------------------------------------
50 *---------------------------------------------------------------------------*/
53 /*--------------------------- rt_time_get -----------------------------------*/
55 U32
rt_time_get (void) {
56 /* Get system time tick */
61 /*--------------------------- rt_dly_wait -----------------------------------*/
63 void rt_dly_wait (U16 delay_time
) {
64 /* Delay task by "delay_time" */
65 rt_block (delay_time
, WAIT_DLY
);
69 /*--------------------------- rt_itv_set ------------------------------------*/
71 void rt_itv_set (U16 interval_time
) {
72 /* Set interval length and define start of first interval */
73 os_tsk
.run
->interval_time
= interval_time
;
74 os_tsk
.run
->delta_time
= interval_time
+ (U16
)os_time
;
78 /*--------------------------- rt_itv_wait -----------------------------------*/
80 void rt_itv_wait (void) {
81 /* Wait for interval end and define start of next one */
84 delta
= os_tsk
.run
->delta_time
- (U16
)os_time
;
85 os_tsk
.run
->delta_time
+= os_tsk
.run
->interval_time
;
86 if ((delta
& 0x8000) == 0) {
87 rt_block (delta
, WAIT_ITV
);
91 /*----------------------------------------------------------------------------
93 *---------------------------------------------------------------------------*/