mbed-os-examples / Mbed OS mbed-os-example-mbed5-cpu-stats

Example to demonstrate usage of `mbed_stats_cpu_get()` API usage

main.cpp@27:2dd1f9b90afb, 2019-11-28 (annotated)

Committer:
mbed_official
Date:
Thu Nov 28 16:02:11 2019 +0000
Revision:
27:2dd1f9b90afb
Parent:
18:86a8fc778472 
Merge https://github.com/ARMmbed/mbed-os-example-cpu-stats



.

Commit copied from https://github.com/ARMmbed/mbed-os-example-cpu-stats

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 15:86c93f5d67c4 1 /* Copyright (c) 2018 Arm Limited
mbed_official 15:86c93f5d67c4 2 *
mbed_official 15:86c93f5d67c4 3 * SPDX-License-Identifier: Apache-2.0
mbed_official 15:86c93f5d67c4 4 *
mbed_official 15:86c93f5d67c4 5 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 15:86c93f5d67c4 6 * you may not use this file except in compliance with the License.
mbed_official 15:86c93f5d67c4 7 * You may obtain a copy of the License at
mbed_official 15:86c93f5d67c4 8 *
mbed_official 15:86c93f5d67c4 9 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 15:86c93f5d67c4 10 *
mbed_official 15:86c93f5d67c4 11 * Unless required by applicable law or agreed to in writing, software
mbed_official 15:86c93f5d67c4 12 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 15:86c93f5d67c4 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 15:86c93f5d67c4 14 * See the License for the specific language governing permissions and
mbed_official 15:86c93f5d67c4 15 * limitations under the License.
mbed_official 15:86c93f5d67c4 16 */
mbed_official 0:3114f82feb68 17 #include "mbed.h"
mbed_official 0:3114f82feb68 18
mbed_official 0:3114f82feb68 19 #if !defined(MBED_CPU_STATS_ENABLED) || !defined(DEVICE_LPTICKER) || !defined(DEVICE_SLEEP)
mbed_official 0:3114f82feb68 20 #error [NOT_SUPPORTED] test not supported
mbed_official 0:3114f82feb68 21 #endif
mbed_official 0:3114f82feb68 22
mbed_official 0:3114f82feb68 23 DigitalOut led1(LED1);
mbed_official 0:3114f82feb68 24
mbed_official 0:3114f82feb68 25 #define MAX_THREAD_STACK 384
mbed_official 0:3114f82feb68 26 #define SAMPLE_TIME 1000
mbed_official 0:3114f82feb68 27 #define LOOP_TIME 3000
mbed_official 0:3114f82feb68 28
mbed_official 0:3114f82feb68 29 uint64_t prev_idle_time = 0;
mbed_official 0:3114f82feb68 30 int32_t wait_time = 5000;
mbed_official 0:3114f82feb68 31
mbed_official 0:3114f82feb68 32 void busy_thread()
mbed_official 0:3114f82feb68 33 {
mbed_official 0:3114f82feb68 34 volatile uint64_t i = ~0;
mbed_official 0:3114f82feb68 35
mbed_official 0:3114f82feb68 36 while(i--) {
mbed_official 0:3114f82feb68 37 led1 = !led1;
mbed_official 18:86a8fc778472 38 wait_ms(wait_time);
mbed_official 0:3114f82feb68 39 }
mbed_official 0:3114f82feb68 40 }
mbed_official 0:3114f82feb68 41
mbed_official 0:3114f82feb68 42 void print_stats()
mbed_official 0:3114f82feb68 43 {
mbed_official 0:3114f82feb68 44 mbed_stats_cpu_t stats;
mbed_official 0:3114f82feb68 45 mbed_stats_cpu_get(&stats);
mbed_official 0:3114f82feb68 46
mbed_official 0:3114f82feb68 47 printf("%-20lld", stats.uptime);
mbed_official 0:3114f82feb68 48 printf("%-20lld", stats.idle_time);
mbed_official 0:3114f82feb68 49 printf("%-20lld", stats.sleep_time);
mbed_official 0:3114f82feb68 50 printf("%-20lld\n", stats.deep_sleep_time);
mbed_official 0:3114f82feb68 51 }
mbed_official 0:3114f82feb68 52
mbed_official 0:3114f82feb68 53 int main()
mbed_official 0:3114f82feb68 54 {
mbed_official 0:3114f82feb68 55 // Request the shared queue
mbed_official 0:3114f82feb68 56 EventQueue *stats_queue = mbed_event_queue();
mbed_official 0:3114f82feb68 57 Thread *thread;
mbed_official 0:3114f82feb68 58 int id;
mbed_official 0:3114f82feb68 59
mbed_official 0:3114f82feb68 60 id = stats_queue->call_every(SAMPLE_TIME, print_stats);
mbed_official 0:3114f82feb68 61 printf("%-20s%-20s%-20s%-20s\n", "Uptime", "Idle Time", "Sleep time", "DeepSleep time");
mbed_official 0:3114f82feb68 62
mbed_official 0:3114f82feb68 63 thread = new Thread(osPriorityNormal, MAX_THREAD_STACK);
mbed_official 0:3114f82feb68 64 thread->start(busy_thread);
mbed_official 0:3114f82feb68 65
mbed_official 0:3114f82feb68 66 // Steadily increase the system load
mbed_official 0:3114f82feb68 67 for (int count = 1; ; count++) {
mbed_official 18:86a8fc778472 68 ThisThread::sleep_for(LOOP_TIME);
mbed_official 0:3114f82feb68 69 if (wait_time <= 0) {
mbed_official 0:3114f82feb68 70 break;
mbed_official 0:3114f82feb68 71 }
mbed_official 0:3114f82feb68 72 wait_time -= 1000;
mbed_official 0:3114f82feb68 73 }
mbed_official 0:3114f82feb68 74 thread->terminate();
mbed_official 0:3114f82feb68 75 stats_queue->cancel(id);
mbed_official 0:3114f82feb68 76 return 0;
mbed_official 0:3114f82feb68 77 }