Embedded Artists / Mbed OS DMSupport

A board support package for the LPC4088 Display Module.

Dependencies:   DM_HttpServer DM_USBHost

Dependents:   lpc4088_displaymodule_emwin lpc4088_displaymodule_demo_sphere sampleGUI sampleEmptyGUI ... more

Fork of DMSupport by EmbeddedArtists AB

RtosLog.h@39:e1cb4dd9bfeb, 2015-04-28 (annotated)

Committer:
alindvall
Date:
Tue Apr 28 11:47:20 2015 +0000
Revision:
39:e1cb4dd9bfeb
Parent:
34:fc366bab393f 
Added display frame rate setting. Updated used libraries.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
embeddedartists 2:887c6b45e7fa 1 /*
embeddedartists 2:887c6b45e7fa 2 * Copyright 2014 Embedded Artists AB
embeddedartists 2:887c6b45e7fa 3 *
embeddedartists 2:887c6b45e7fa 4 * Licensed under the Apache License, Version 2.0 (the "License");
embeddedartists 2:887c6b45e7fa 5 * you may not use this file except in compliance with the License.
embeddedartists 2:887c6b45e7fa 6 * You may obtain a copy of the License at
embeddedartists 2:887c6b45e7fa 7 *
embeddedartists 2:887c6b45e7fa 8 * http://www.apache.org/licenses/LICENSE-2.0
embeddedartists 2:887c6b45e7fa 9 *
embeddedartists 2:887c6b45e7fa 10 * Unless required by applicable law or agreed to in writing, software
embeddedartists 2:887c6b45e7fa 11 * distributed under the License is distributed on an "AS IS" BASIS,
embeddedartists 2:887c6b45e7fa 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
embeddedartists 2:887c6b45e7fa 13 * See the License for the specific language governing permissions and
embeddedartists 2:887c6b45e7fa 14 * limitations under the License.
embeddedartists 2:887c6b45e7fa 15 */
embeddedartists 2:887c6b45e7fa 16
embeddedartists 2:887c6b45e7fa 17 #ifndef RTOSLOG_H
embeddedartists 2:887c6b45e7fa 18 #define RTOSLOG_H
embeddedartists 2:887c6b45e7fa 19
embeddedartists 2:887c6b45e7fa 20 #include "mbed.h"
embeddedartists 2:887c6b45e7fa 21 #include "rtos.h"
embeddedartists 2:887c6b45e7fa 22 #include "dm_board_config.h"
embeddedartists 2:887c6b45e7fa 23
embeddedartists 34:fc366bab393f 24 #if defined(DM_BOARD_USE_USBSERIAL_IN_RTOSLOG)
embeddedartists 34:fc366bab393f 25 #include "USBSerial.h"
embeddedartists 34:fc366bab393f 26 #endif
embeddedartists 34:fc366bab393f 27
embeddedartists 2:887c6b45e7fa 28 /**
embeddedartists 2:887c6b45e7fa 29 * All threads can independantly call the printf function in the RtosLog class
embeddedartists 9:a33326afd686 30 * without risk of getting the output tangled up.
embeddedartists 2:887c6b45e7fa 31 *
embeddedartists 2:887c6b45e7fa 32 * The RtosLog class uses a Thread to process the messages one at a time.
embeddedartists 9:a33326afd686 33 *
embeddedartists 9:a33326afd686 34 *
embeddedartists 9:a33326afd686 35 * Example of using the RtosLog class:
embeddedartists 9:a33326afd686 36 *
embeddedartists 9:a33326afd686 37 * @code
embeddedartists 9:a33326afd686 38 * #include "mbed.h"
embeddedartists 9:a33326afd686 39 * #include "DMBoard.h"
embeddedartists 9:a33326afd686 40 *
embeddedartists 9:a33326afd686 41 * void myTask(void const*args) {
embeddedartists 9:a33326afd686 42 * RtosLog* log = DMBoard::instance().logger();
embeddedartists 9:a33326afd686 43 * ...
embeddedartists 9:a33326afd686 44 * log->printf("Hello world!\n");
embeddedartists 9:a33326afd686 45 * ...
embeddedartists 9:a33326afd686 46 * }
embeddedartists 9:a33326afd686 47 * @endcode
embeddedartists 9:a33326afd686 48 *
embeddedartists 2:887c6b45e7fa 49 */
embeddedartists 2:887c6b45e7fa 50 class RtosLog {
embeddedartists 2:887c6b45e7fa 51 public:
embeddedartists 2:887c6b45e7fa 52 enum Constants {
embeddedartists 2:887c6b45e7fa 53 MessageLen = 80,
embeddedartists 2:887c6b45e7fa 54 NumMessages = 16,
embeddedartists 2:887c6b45e7fa 55 };
embeddedartists 2:887c6b45e7fa 56
embeddedartists 2:887c6b45e7fa 57 RtosLog();
embeddedartists 2:887c6b45e7fa 58 ~RtosLog();
embeddedartists 2:887c6b45e7fa 59
embeddedartists 34:fc366bab393f 60 /** Starts the logger thread, called from DMBoard::instance().init()
embeddedartists 2:887c6b45e7fa 61 */
embeddedartists 2:887c6b45e7fa 62 void init();
embeddedartists 2:887c6b45e7fa 63
embeddedartists 34:fc366bab393f 64 /** Printf that works in an RTOS
embeddedartists 34:fc366bab393f 65 *
embeddedartists 34:fc366bab393f 66 * This function will create a string from the specified format and
embeddedartists 34:fc366bab393f 67 * optional extra arguments and put it into a message that the RtosLog
embeddedartists 34:fc366bab393f 68 * thread will write to the log.
embeddedartists 34:fc366bab393f 69 *
embeddedartists 34:fc366bab393f 70 * Note that if the underlying queue is full then this function
embeddedartists 34:fc366bab393f 71 * will block until an entry becomes available. This is required to
embeddedartists 34:fc366bab393f 72 * make sure that all printf calls actually get printed. If this happens
embeddedartists 34:fc366bab393f 73 * too often then increase the priority of the RtosLog thread or reduce
embeddedartists 34:fc366bab393f 74 * the number of printed messages.
embeddedartists 34:fc366bab393f 75 *
embeddedartists 34:fc366bab393f 76 * @param format format string
embeddedartists 34:fc366bab393f 77 * @param ... optional extra arguments
embeddedartists 34:fc366bab393f 78 */
embeddedartists 2:887c6b45e7fa 79 int printf(const char* format, ...);
embeddedartists 34:fc366bab393f 80
embeddedartists 34:fc366bab393f 81 /** Printf that works in an RTOS
embeddedartists 34:fc366bab393f 82 *
embeddedartists 34:fc366bab393f 83 * This function will create a string from the specified format and
embeddedartists 34:fc366bab393f 84 * optional extra arguments and put it into a message that the RtosLog
embeddedartists 34:fc366bab393f 85 * thread will write to the log.
embeddedartists 34:fc366bab393f 86 *
embeddedartists 34:fc366bab393f 87 * Note that if the underlying queue is full then this function
embeddedartists 34:fc366bab393f 88 * discards the message and returns immediately.
embeddedartists 34:fc366bab393f 89 *
embeddedartists 34:fc366bab393f 90 * @param format format string
embeddedartists 34:fc366bab393f 91 * @param ... optional extra arguments
embeddedartists 34:fc366bab393f 92 */
embeddedartists 34:fc366bab393f 93 int isr_printf(const char* format, ...);
embeddedartists 2:887c6b45e7fa 94
embeddedartists 2:887c6b45e7fa 95 private:
embeddedartists 2:887c6b45e7fa 96
embeddedartists 2:887c6b45e7fa 97 typedef struct {
embeddedartists 2:887c6b45e7fa 98 char* ptr; /* Non-NULL if memory is allocated */
embeddedartists 2:887c6b45e7fa 99 char msg[MessageLen+1]; /* A counter value */
embeddedartists 2:887c6b45e7fa 100 } message_t;
embeddedartists 2:887c6b45e7fa 101
embeddedartists 2:887c6b45e7fa 102 MemoryPool<message_t, NumMessages> _mpool;
embeddedartists 2:887c6b45e7fa 103 Queue<message_t, NumMessages> _queue;
embeddedartists 2:887c6b45e7fa 104 Semaphore _sem;
embeddedartists 34:fc366bab393f 105 #if defined(DM_BOARD_USE_USBSERIAL_IN_RTOSLOG)
embeddedartists 34:fc366bab393f 106 USBSerial _serial;
embeddedartists 34:fc366bab393f 107 #else
embeddedartists 2:887c6b45e7fa 108 Serial _serial;
embeddedartists 34:fc366bab393f 109 #endif
embeddedartists 2:887c6b45e7fa 110 Thread* _thr;
embeddedartists 2:887c6b45e7fa 111
embeddedartists 2:887c6b45e7fa 112 static void logTask(void const* args);
embeddedartists 2:887c6b45e7fa 113 };
embeddedartists 2:887c6b45e7fa 114
embeddedartists 2:887c6b45e7fa 115 #endif