Demo application for using the AT&T IoT Starter Kit Powered by AWS.
Dependencies: SDFileSystem
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MODSERIAL.cpp
00001 /* 00002 Copyright (c) 2010 Andy Kirkham 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 00020 THE SOFTWARE. 00021 00022 @file MODSERIAL.h 00023 @purpose Extends Serial to provide fully buffered IO 00024 @version 1.6 00025 @date Nov 2010 00026 @author Andy Kirkham 00027 */ 00028 00029 #include "MODSERIAL.h" 00030 #include "MACROS.h" 00031 00032 namespace AjK { 00033 00034 MODSERIAL::MODSERIAL( PinName tx, PinName rx, const char* name ) : Serial( tx, rx, name ) 00035 { 00036 init( MODSERIAL_DEFAULT_TX_BUFFER_SIZE, MODSERIAL_DEFAULT_RX_BUFFER_SIZE, rx ); 00037 } 00038 00039 MODSERIAL::MODSERIAL( PinName tx, PinName rx, int bufferSize, const char* name ) : Serial( tx, rx, name ) 00040 { 00041 init( bufferSize, bufferSize, rx ); 00042 } 00043 00044 MODSERIAL::MODSERIAL( PinName tx, PinName rx, int txSize, int rxSize, const char* name ) : Serial( tx, rx, name ) 00045 { 00046 init( txSize, rxSize, rx ); 00047 } 00048 00049 MODSERIAL::~MODSERIAL() 00050 { 00051 NVIC_DisableIRQ(_IRQ); 00052 if ( buffer[0] != NULL) free((char *)buffer[0] ); 00053 if ( buffer[1] != NULL) free((char *)buffer[1] ); 00054 } 00055 00056 bool MODSERIAL::txBufferFull( void ) 00057 { 00058 return MODSERIAL_TX_BUFFER_FULL; 00059 } 00060 00061 bool MODSERIAL::rxBufferFull( void ) 00062 { 00063 return MODSERIAL_RX_BUFFER_FULL; 00064 } 00065 00066 bool MODSERIAL::txBufferEmpty( void ) 00067 { 00068 return MODSERIAL_TX_BUFFER_EMPTY; 00069 } 00070 00071 bool MODSERIAL::rxBufferEmpty( void ) 00072 { 00073 return MODSERIAL_RX_BUFFER_EMPTY; 00074 } 00075 00076 00077 int MODSERIAL::rxDiscardLastChar( void ) 00078 { 00079 // This function can only be called indirectly from 00080 // an rxCallback function. Therefore, we know we 00081 // just placed a char into the buffer. 00082 char c = buffer[RxIrq][buffer_in[RxIrq]]; 00083 00084 if (buffer_count[RxIrq]) { 00085 buffer_count[RxIrq]--; 00086 buffer_in[RxIrq]--; 00087 if (buffer_in[RxIrq] < 0) { 00088 buffer_in[RxIrq] = buffer_size[RxIrq] - 1; 00089 } 00090 } 00091 00092 return (int)c; 00093 } 00094 00095 00096 bool MODSERIAL::claim (FILE *stream) { 00097 #if 0 00098 if ( _name == NULL) { 00099 error("claim requires a name to be given in the instantiator of the MODSERIAL instance!\r\n"); 00100 } 00101 00102 //Add '/' before name: 00103 char *path = new char[strlen(_name) + 2]; 00104 sprintf(path, "/%s", _name); 00105 00106 if (freopen(path, "w", stream) == NULL) { 00107 // Failed, should not happen 00108 return false; 00109 } 00110 00111 delete(path); 00112 00113 //No buffering 00114 setvbuf(stdout, NULL, _IONBF, buffer_size[TxIrq]); 00115 #endif 00116 00117 return true; 00118 } 00119 00120 00121 00122 }; // namespace AjK ends 00123
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