Ultrasound timeout demo
Dependencies: F7_Ethernet HCSR04 MQTT mbed
Fork of Nucleo_F746ZG_Ethernet by
Queue.h
00001 /* mbed Microcontroller Library 00002 * Copyright (c) 2006-2012 ARM Limited 00003 * 00004 * Permission is hereby granted, free of charge, to any person obtaining a copy 00005 * of this software and associated documentation files (the "Software"), to deal 00006 * in the Software without restriction, including without limitation the rights 00007 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 00008 * copies of the Software, and to permit persons to whom the Software is 00009 * furnished to do so, subject to the following conditions: 00010 * 00011 * The above copyright notice and this permission notice shall be included in 00012 * all copies or substantial portions of the Software. 00013 * 00014 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 00015 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00016 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 00017 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 00018 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 00019 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 00020 * SOFTWARE. 00021 */ 00022 #ifndef QUEUE_H 00023 #define QUEUE_H 00024 00025 #include <stdint.h> 00026 #include <string.h> 00027 00028 #include "cmsis_os.h" 00029 #include "mbed_error.h" 00030 00031 namespace rtos { 00032 00033 /** The Queue class allow to control, send, receive, or wait for messages. 00034 A message can be a integer or pointer value to a certain type T that is send 00035 to a thread or interrupt service routine. 00036 @tparam T data type of a single message element. 00037 @tparam queue_sz maximum number of messages in queue. 00038 */ 00039 template<typename T, uint32_t queue_sz> 00040 class Queue { 00041 public: 00042 /** Create and initialise a message Queue. */ 00043 Queue() { 00044 #ifdef CMSIS_OS_RTX 00045 memset(_queue_q, 0, sizeof(_queue_q)); 00046 _queue_def.pool = _queue_q; 00047 _queue_def.queue_sz = queue_sz; 00048 #endif 00049 _queue_id = osMessageCreate(&_queue_def, NULL); 00050 if (_queue_id == NULL) { 00051 error("Error initialising the queue object\n"); 00052 } 00053 } 00054 00055 /** Put a message in a Queue. 00056 @param data message pointer. 00057 @param millisec timeout value or 0 in case of no time-out. (default: 0) 00058 @return status code that indicates the execution status of the function. 00059 */ 00060 osStatus put(T* data, uint32_t millisec=0) { 00061 return osMessagePut(_queue_id, (uint32_t)data, millisec); 00062 } 00063 00064 /** Get a message or Wait for a message from a Queue. 00065 @param millisec timeout value or 0 in case of no time-out. (default: osWaitForever). 00066 @return event information that includes the message and the status code. 00067 */ 00068 osEvent get(uint32_t millisec=osWaitForever) { 00069 return osMessageGet(_queue_id, millisec); 00070 } 00071 00072 private: 00073 osMessageQId _queue_id; 00074 osMessageQDef_t _queue_def; 00075 #ifdef CMSIS_OS_RTX 00076 uint32_t _queue_q[4+(queue_sz)]; 00077 #endif 00078 }; 00079 00080 } 00081 #endif
Generated on Tue Aug 2 2022 04:13:39 by 1.7.2