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.cpp@33:8a0a99d54bf8, 2015-02-19 (annotated)

Committer:
embeddedartists
Date:
Thu Feb 19 14:41:14 2015 +0100
Revision:
33:8a0a99d54bf8
Parent:
2:887c6b45e7fa
Child:
34:fc366bab393f
- Added special treatement of touch controller for multitouch

- Corrected button pin name (wrong after switching to LPC4088_DM as target

- Fixed bug in QSPIFileSystem that prevented opening the root folder

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 #include "mbed.h"
embeddedartists 2:887c6b45e7fa 18 #include "RtosLog.h"
embeddedartists 2:887c6b45e7fa 19 #include <cstdarg>
embeddedartists 2:887c6b45e7fa 20
embeddedartists 2:887c6b45e7fa 21 /******************************************************************************
embeddedartists 2:887c6b45e7fa 22 * Defines and typedefs
embeddedartists 2:887c6b45e7fa 23 *****************************************************************************/
embeddedartists 2:887c6b45e7fa 24
embeddedartists 2:887c6b45e7fa 25
embeddedartists 2:887c6b45e7fa 26 /******************************************************************************
embeddedartists 2:887c6b45e7fa 27 * Local variables
embeddedartists 2:887c6b45e7fa 28 *****************************************************************************/
embeddedartists 2:887c6b45e7fa 29
embeddedartists 2:887c6b45e7fa 30 /******************************************************************************
embeddedartists 2:887c6b45e7fa 31 * Private Functions
embeddedartists 2:887c6b45e7fa 32 *****************************************************************************/
embeddedartists 2:887c6b45e7fa 33
embeddedartists 2:887c6b45e7fa 34 void RtosLog::logTask(void const* args)
embeddedartists 2:887c6b45e7fa 35 {
embeddedartists 2:887c6b45e7fa 36 RtosLog* instance = (RtosLog*)args;
embeddedartists 2:887c6b45e7fa 37
embeddedartists 2:887c6b45e7fa 38 while (true) {
embeddedartists 2:887c6b45e7fa 39 osEvent evt = instance->_queue.get();
embeddedartists 2:887c6b45e7fa 40 if (evt.status == osEventMessage) {
embeddedartists 2:887c6b45e7fa 41 message_t *message = (message_t*)evt.value.p;
embeddedartists 2:887c6b45e7fa 42 if (message->ptr != NULL) {
embeddedartists 2:887c6b45e7fa 43 instance->_serial.printf(message->ptr);
embeddedartists 2:887c6b45e7fa 44 free(message->ptr);
embeddedartists 2:887c6b45e7fa 45 } else {
embeddedartists 2:887c6b45e7fa 46 instance->_serial.printf(message->msg);
embeddedartists 2:887c6b45e7fa 47 }
embeddedartists 2:887c6b45e7fa 48
embeddedartists 2:887c6b45e7fa 49 instance->_mpool.free(message);
embeddedartists 2:887c6b45e7fa 50
embeddedartists 2:887c6b45e7fa 51 // Increase the number of available messages in the pool
embeddedartists 2:887c6b45e7fa 52 instance->_sem.release();
embeddedartists 2:887c6b45e7fa 53 }
embeddedartists 2:887c6b45e7fa 54 }
embeddedartists 2:887c6b45e7fa 55 }
embeddedartists 2:887c6b45e7fa 56
embeddedartists 2:887c6b45e7fa 57 /******************************************************************************
embeddedartists 2:887c6b45e7fa 58 * Public Functions
embeddedartists 2:887c6b45e7fa 59 *****************************************************************************/
embeddedartists 2:887c6b45e7fa 60
embeddedartists 2:887c6b45e7fa 61 RtosLog::RtosLog() :
embeddedartists 2:887c6b45e7fa 62 _sem(NumMessages), _serial(USBTX, USBRX), _thr(NULL)
embeddedartists 2:887c6b45e7fa 63 {
embeddedartists 2:887c6b45e7fa 64 #if defined(DM_BOARD_USE_FAST_UART)
embeddedartists 2:887c6b45e7fa 65 // This works because both the default serial (used by printf) and the s instance
embeddedartists 2:887c6b45e7fa 66 // (used by s.printf) would use the same underlying UART code so setting the baudrate
embeddedartists 2:887c6b45e7fa 67 // in one affects the other.
embeddedartists 2:887c6b45e7fa 68 _serial.baud(115200);
embeddedartists 2:887c6b45e7fa 69 #endif
embeddedartists 2:887c6b45e7fa 70 }
embeddedartists 2:887c6b45e7fa 71
embeddedartists 2:887c6b45e7fa 72 RtosLog::~RtosLog()
embeddedartists 2:887c6b45e7fa 73 {
embeddedartists 2:887c6b45e7fa 74 if (_thr != NULL) {
embeddedartists 2:887c6b45e7fa 75 _thr->terminate();
embeddedartists 2:887c6b45e7fa 76 delete _thr;
embeddedartists 2:887c6b45e7fa 77 _thr = NULL;
embeddedartists 2:887c6b45e7fa 78 }
embeddedartists 2:887c6b45e7fa 79 }
embeddedartists 2:887c6b45e7fa 80
embeddedartists 2:887c6b45e7fa 81 void RtosLog::init()
embeddedartists 2:887c6b45e7fa 82 {
embeddedartists 2:887c6b45e7fa 83 if (_thr == NULL) {
embeddedartists 2:887c6b45e7fa 84 _thr = new Thread(&RtosLog::logTask, this);
embeddedartists 2:887c6b45e7fa 85 }
embeddedartists 2:887c6b45e7fa 86 }
embeddedartists 2:887c6b45e7fa 87
embeddedartists 2:887c6b45e7fa 88 int RtosLog::printf(const char* format, ...)
embeddedartists 2:887c6b45e7fa 89 {
embeddedartists 2:887c6b45e7fa 90 // The pool has no "wait for free message" so we use a Sempahore
embeddedartists 2:887c6b45e7fa 91 // to keep track of the number of free messages and, if needed,
embeddedartists 2:887c6b45e7fa 92 // block the caller until a message is free
embeddedartists 2:887c6b45e7fa 93 _sem.wait();
embeddedartists 2:887c6b45e7fa 94
embeddedartists 2:887c6b45e7fa 95 // Allocate a null terminated message. Will always succeed due to
embeddedartists 2:887c6b45e7fa 96 // the semaphore above
embeddedartists 2:887c6b45e7fa 97 message_t *message = _mpool.calloc();
embeddedartists 2:887c6b45e7fa 98
embeddedartists 2:887c6b45e7fa 99 // Write the callers formatted message
embeddedartists 2:887c6b45e7fa 100 std::va_list args;
embeddedartists 2:887c6b45e7fa 101 va_start(args, format);
embeddedartists 2:887c6b45e7fa 102 int ret = vsnprintf(message->msg, MessageLen, format, args);
embeddedartists 2:887c6b45e7fa 103 va_end(args);
embeddedartists 2:887c6b45e7fa 104
embeddedartists 2:887c6b45e7fa 105 // If the entire message could not fit in the preallocated buffer
embeddedartists 2:887c6b45e7fa 106 // then allocate a new one and try again.
embeddedartists 2:887c6b45e7fa 107 if (ret > MessageLen) {
embeddedartists 2:887c6b45e7fa 108 message->ptr = (char*)malloc(ret + 1);
embeddedartists 2:887c6b45e7fa 109 if (message->ptr != NULL) {
embeddedartists 2:887c6b45e7fa 110 va_start(args, format);
embeddedartists 2:887c6b45e7fa 111 ret = vsnprintf(message->ptr, ret + 1, format, args);
embeddedartists 2:887c6b45e7fa 112 va_end(args);
embeddedartists 2:887c6b45e7fa 113 }
embeddedartists 2:887c6b45e7fa 114 }
embeddedartists 2:887c6b45e7fa 115
embeddedartists 2:887c6b45e7fa 116 // Send message
embeddedartists 2:887c6b45e7fa 117 _queue.put(message);
embeddedartists 2:887c6b45e7fa 118
embeddedartists 2:887c6b45e7fa 119 // Note that the Semaphore is not released here, that is done after
embeddedartists 2:887c6b45e7fa 120 // the message has been processed and released into the pool by
embeddedartists 2:887c6b45e7fa 121 // logTask()
embeddedartists 2:887c6b45e7fa 122 //_sem.release();
embeddedartists 2:887c6b45e7fa 123
embeddedartists 2:887c6b45e7fa 124 return ret;
embeddedartists 2:887c6b45e7fa 125 }
embeddedartists 2:887c6b45e7fa 126