IBM Watson IoT / Mbed OS IBMIoTClientEthernetExample

Contains example code to connect the mbed LPC1768 or FRDM-K64F devices to the IBM Internet of Things Cloud service via ethernet.

Dependencies:   C12832 MQTT LM75B MMA7660

Dependents:   MFT_IoT_demo_USB400 IBM_RFID

mbed-rtos/rtos/Queue.h@6:37b6d0d56190, 2014-08-20 (annotated)

Committer:
samdanbury
Date:
Wed Aug 20 12:45:14 2014 +0000
Revision:
6:37b6d0d56190
Code completely changed to improve the structure, flow and memory usage of the application

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samdanbury 6:37b6d0d56190 1 /* mbed Microcontroller Library
samdanbury 6:37b6d0d56190 2 * Copyright (c) 2006-2012 ARM Limited
samdanbury 6:37b6d0d56190 3 *
samdanbury 6:37b6d0d56190 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
samdanbury 6:37b6d0d56190 5 * of this software and associated documentation files (the "Software"), to deal
samdanbury 6:37b6d0d56190 6 * in the Software without restriction, including without limitation the rights
samdanbury 6:37b6d0d56190 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
samdanbury 6:37b6d0d56190 8 * copies of the Software, and to permit persons to whom the Software is
samdanbury 6:37b6d0d56190 9 * furnished to do so, subject to the following conditions:
samdanbury 6:37b6d0d56190 10 *
samdanbury 6:37b6d0d56190 11 * The above copyright notice and this permission notice shall be included in
samdanbury 6:37b6d0d56190 12 * all copies or substantial portions of the Software.
samdanbury 6:37b6d0d56190 13 *
samdanbury 6:37b6d0d56190 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
samdanbury 6:37b6d0d56190 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
samdanbury 6:37b6d0d56190 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
samdanbury 6:37b6d0d56190 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
samdanbury 6:37b6d0d56190 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
samdanbury 6:37b6d0d56190 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
samdanbury 6:37b6d0d56190 20 * SOFTWARE.
samdanbury 6:37b6d0d56190 21 */
samdanbury 6:37b6d0d56190 22 #ifndef QUEUE_H
samdanbury 6:37b6d0d56190 23 #define QUEUE_H
samdanbury 6:37b6d0d56190 24
samdanbury 6:37b6d0d56190 25 #include <stdint.h>
samdanbury 6:37b6d0d56190 26 #include <string.h>
samdanbury 6:37b6d0d56190 27
samdanbury 6:37b6d0d56190 28 #include "cmsis_os.h"
samdanbury 6:37b6d0d56190 29 #include "error.h"
samdanbury 6:37b6d0d56190 30
samdanbury 6:37b6d0d56190 31 namespace rtos {
samdanbury 6:37b6d0d56190 32
samdanbury 6:37b6d0d56190 33 /** The Queue class allow to control, send, receive, or wait for messages.
samdanbury 6:37b6d0d56190 34 A message can be a integer or pointer value to a certain type T that is send
samdanbury 6:37b6d0d56190 35 to a thread or interrupt service routine.
samdanbury 6:37b6d0d56190 36 @tparam T data type of a single message element.
samdanbury 6:37b6d0d56190 37 @tparam queue_sz maximum number of messages in queue.
samdanbury 6:37b6d0d56190 38 */
samdanbury 6:37b6d0d56190 39 template<typename T, uint32_t queue_sz>
samdanbury 6:37b6d0d56190 40 class Queue {
samdanbury 6:37b6d0d56190 41 public:
samdanbury 6:37b6d0d56190 42 /** Create and initialise a message Queue. */
samdanbury 6:37b6d0d56190 43 Queue() {
samdanbury 6:37b6d0d56190 44 #ifdef CMSIS_OS_RTX
samdanbury 6:37b6d0d56190 45 memset(_queue_q, 0, sizeof(_queue_q));
samdanbury 6:37b6d0d56190 46 _queue_def.pool = _queue_q;
samdanbury 6:37b6d0d56190 47 _queue_def.queue_sz = queue_sz;
samdanbury 6:37b6d0d56190 48 #endif
samdanbury 6:37b6d0d56190 49 _queue_id = osMessageCreate(&_queue_def, NULL);
samdanbury 6:37b6d0d56190 50 if (_queue_id == NULL) {
samdanbury 6:37b6d0d56190 51 error("Error initialising the queue object\n");
samdanbury 6:37b6d0d56190 52 }
samdanbury 6:37b6d0d56190 53 }
samdanbury 6:37b6d0d56190 54
samdanbury 6:37b6d0d56190 55 /** Put a message in a Queue.
samdanbury 6:37b6d0d56190 56 @param data message pointer.
samdanbury 6:37b6d0d56190 57 @param millisec timeout value or 0 in case of no time-out. (default: 0)
samdanbury 6:37b6d0d56190 58 @return status code that indicates the execution status of the function.
samdanbury 6:37b6d0d56190 59 */
samdanbury 6:37b6d0d56190 60 osStatus put(T* data, uint32_t millisec=0) {
samdanbury 6:37b6d0d56190 61 return osMessagePut(_queue_id, (uint32_t)data, millisec);
samdanbury 6:37b6d0d56190 62 }
samdanbury 6:37b6d0d56190 63
samdanbury 6:37b6d0d56190 64 /** Get a message or Wait for a message from a Queue.
samdanbury 6:37b6d0d56190 65 @param millisec timeout value or 0 in case of no time-out. (default: osWaitForever).
samdanbury 6:37b6d0d56190 66 @return event information that includes the message and the status code.
samdanbury 6:37b6d0d56190 67 */
samdanbury 6:37b6d0d56190 68 osEvent get(uint32_t millisec=osWaitForever) {
samdanbury 6:37b6d0d56190 69 return osMessageGet(_queue_id, millisec);
samdanbury 6:37b6d0d56190 70 }
samdanbury 6:37b6d0d56190 71
samdanbury 6:37b6d0d56190 72 private:
samdanbury 6:37b6d0d56190 73 osMessageQId _queue_id;
samdanbury 6:37b6d0d56190 74 osMessageQDef_t _queue_def;
samdanbury 6:37b6d0d56190 75 #ifdef CMSIS_OS_RTX
samdanbury 6:37b6d0d56190 76 uint32_t _queue_q[4+(queue_sz)];
samdanbury 6:37b6d0d56190 77 #endif
samdanbury 6:37b6d0d56190 78 };
samdanbury 6:37b6d0d56190 79
samdanbury 6:37b6d0d56190 80 }
samdanbury 6:37b6d0d56190 81 #endif