leo hendrickson / Mbed OS example-Ethernet-mbed-Cloud-connect

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simple-mbed-cloud-client/mbed-cloud-client/ns-hal-pal/arm_hal_timer.cpp@0:8f0bb79ddd48, 2021-05-04 (annotated)

Committer:
leothedragon
Date:
Tue May 04 08:55:12 2021 +0000
Revision:
0:8f0bb79ddd48
nmn

Who changed what in which revision?

UserRevisionLine numberNew contents of line
leothedragon 0:8f0bb79ddd48 1 // ----------------------------------------------------------------------------
leothedragon 0:8f0bb79ddd48 2 // Copyright 2016-2017 ARM Ltd.
leothedragon 0:8f0bb79ddd48 3 //
leothedragon 0:8f0bb79ddd48 4 // SPDX-License-Identifier: Apache-2.0
leothedragon 0:8f0bb79ddd48 5 //
leothedragon 0:8f0bb79ddd48 6 // Licensed under the Apache License, Version 2.0 (the "License");
leothedragon 0:8f0bb79ddd48 7 // you may not use this file except in compliance with the License.
leothedragon 0:8f0bb79ddd48 8 // You may obtain a copy of the License at
leothedragon 0:8f0bb79ddd48 9 //
leothedragon 0:8f0bb79ddd48 10 // http://www.apache.org/licenses/LICENSE-2.0
leothedragon 0:8f0bb79ddd48 11 //
leothedragon 0:8f0bb79ddd48 12 // Unless required by applicable law or agreed to in writing, software
leothedragon 0:8f0bb79ddd48 13 // distributed under the License is distributed on an "AS IS" BASIS,
leothedragon 0:8f0bb79ddd48 14 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
leothedragon 0:8f0bb79ddd48 15 // See the License for the specific language governing permissions and
leothedragon 0:8f0bb79ddd48 16 // limitations under the License.
leothedragon 0:8f0bb79ddd48 17 // ----------------------------------------------------------------------------
leothedragon 0:8f0bb79ddd48 18
leothedragon 0:8f0bb79ddd48 19 // Include before mbed.h to properly get UINT*_C()
leothedragon 0:8f0bb79ddd48 20 #include "ns_types.h"
leothedragon 0:8f0bb79ddd48 21
leothedragon 0:8f0bb79ddd48 22 #include "pal.h"
leothedragon 0:8f0bb79ddd48 23 #include "pal_rtos.h"
leothedragon 0:8f0bb79ddd48 24
leothedragon 0:8f0bb79ddd48 25 #include "platform/arm_hal_timer.h"
leothedragon 0:8f0bb79ddd48 26 #include "platform/arm_hal_interrupt.h"
leothedragon 0:8f0bb79ddd48 27
leothedragon 0:8f0bb79ddd48 28 #include <assert.h>
leothedragon 0:8f0bb79ddd48 29
leothedragon 0:8f0bb79ddd48 30 // Low precision platform tick timer variables
leothedragon 0:8f0bb79ddd48 31 static void (*tick_timer_callback)(void);
leothedragon 0:8f0bb79ddd48 32 static palTimerID_t tick_timer_id;
leothedragon 0:8f0bb79ddd48 33 #define TICK_TIMER_ID 1
leothedragon 0:8f0bb79ddd48 34
leothedragon 0:8f0bb79ddd48 35 void timer_callback(void const *funcArgument)
leothedragon 0:8f0bb79ddd48 36 {
leothedragon 0:8f0bb79ddd48 37 (void)funcArgument;
leothedragon 0:8f0bb79ddd48 38 if (tick_timer_callback != NULL) {
leothedragon 0:8f0bb79ddd48 39 tick_timer_callback();
leothedragon 0:8f0bb79ddd48 40 }
leothedragon 0:8f0bb79ddd48 41 }
leothedragon 0:8f0bb79ddd48 42
leothedragon 0:8f0bb79ddd48 43 #ifdef MBED_CONF_NANOSTACK_EVENTLOOP_EXCLUDE_HIGHRES_TIMER
leothedragon 0:8f0bb79ddd48 44 extern "C" int8_t ns_timer_sleep(void);
leothedragon 0:8f0bb79ddd48 45 #endif
leothedragon 0:8f0bb79ddd48 46
leothedragon 0:8f0bb79ddd48 47 // static method for creating the timer, called implicitly by platform_tick_timer_register if
leothedragon 0:8f0bb79ddd48 48 // timer was not enabled already
leothedragon 0:8f0bb79ddd48 49 static void tick_timer_create(void)
leothedragon 0:8f0bb79ddd48 50 {
leothedragon 0:8f0bb79ddd48 51 palStatus_t status;
leothedragon 0:8f0bb79ddd48 52 status = pal_init();
leothedragon 0:8f0bb79ddd48 53 assert(PAL_SUCCESS == status);
leothedragon 0:8f0bb79ddd48 54 status = pal_osTimerCreate(timer_callback, NULL, palOsTimerPeriodic, &tick_timer_id);
leothedragon 0:8f0bb79ddd48 55 assert(PAL_SUCCESS == status);
leothedragon 0:8f0bb79ddd48 56
leothedragon 0:8f0bb79ddd48 57 }
leothedragon 0:8f0bb79ddd48 58
leothedragon 0:8f0bb79ddd48 59 // Low precision platform tick timer
leothedragon 0:8f0bb79ddd48 60 extern "C"
leothedragon 0:8f0bb79ddd48 61 int8_t platform_tick_timer_register(void (*tick_timer_cb_handler)(void))
leothedragon 0:8f0bb79ddd48 62 {
leothedragon 0:8f0bb79ddd48 63 if (tick_timer_id == 0) {
leothedragon 0:8f0bb79ddd48 64 tick_timer_create();
leothedragon 0:8f0bb79ddd48 65 }
leothedragon 0:8f0bb79ddd48 66 tick_timer_callback = tick_timer_cb_handler;
leothedragon 0:8f0bb79ddd48 67 return TICK_TIMER_ID;
leothedragon 0:8f0bb79ddd48 68 }
leothedragon 0:8f0bb79ddd48 69
leothedragon 0:8f0bb79ddd48 70 extern "C"
leothedragon 0:8f0bb79ddd48 71 int8_t platform_tick_timer_start(uint32_t period_ms)
leothedragon 0:8f0bb79ddd48 72 {
leothedragon 0:8f0bb79ddd48 73 int8_t retval = -1;
leothedragon 0:8f0bb79ddd48 74 if ((tick_timer_id != 0) && (PAL_SUCCESS == pal_osTimerStart(tick_timer_id, period_ms))) {
leothedragon 0:8f0bb79ddd48 75 retval = 0;
leothedragon 0:8f0bb79ddd48 76 }
leothedragon 0:8f0bb79ddd48 77 return retval;
leothedragon 0:8f0bb79ddd48 78 }
leothedragon 0:8f0bb79ddd48 79
leothedragon 0:8f0bb79ddd48 80 extern "C"
leothedragon 0:8f0bb79ddd48 81 int8_t platform_tick_timer_stop(void)
leothedragon 0:8f0bb79ddd48 82 {
leothedragon 0:8f0bb79ddd48 83 int8_t retval = -1;
leothedragon 0:8f0bb79ddd48 84 if ((tick_timer_id != 0) && (PAL_SUCCESS == pal_osTimerStop(tick_timer_id))) {
leothedragon 0:8f0bb79ddd48 85 retval = 0;
leothedragon 0:8f0bb79ddd48 86 }
leothedragon 0:8f0bb79ddd48 87
leothedragon 0:8f0bb79ddd48 88 // release PAL side resources
leothedragon 0:8f0bb79ddd48 89 pal_osTimerDelete(&tick_timer_id);
leothedragon 0:8f0bb79ddd48 90 pal_destroy();
leothedragon 0:8f0bb79ddd48 91
leothedragon 0:8f0bb79ddd48 92 return retval;
leothedragon 0:8f0bb79ddd48 93 }
leothedragon 0:8f0bb79ddd48 94
leothedragon 0:8f0bb79ddd48 95