MOODSERIAL personal fork
Dependents: rosserial_mbed_lib
Fork of MODSERIAL by
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 disableIrq(); 00052 if ( buffer[0] != NULL) free((char *)buffer[0] ); 00053 if ( buffer[1] != NULL) free((char *)buffer[1] ); 00054 } 00055 00056 bool 00057 MODSERIAL::txBufferFull( void ) 00058 { 00059 return MODSERIAL_TX_BUFFER_FULL; 00060 } 00061 00062 bool 00063 MODSERIAL::rxBufferFull( void ) 00064 { 00065 return MODSERIAL_RX_BUFFER_FULL; 00066 } 00067 00068 bool 00069 MODSERIAL::txBufferEmpty( void ) 00070 { 00071 return MODSERIAL_TX_BUFFER_EMPTY; 00072 } 00073 00074 bool 00075 MODSERIAL::rxBufferEmpty( void ) 00076 { 00077 return MODSERIAL_RX_BUFFER_EMPTY; 00078 } 00079 00080 bool 00081 MODSERIAL::txIsBusy( void ) 00082 { 00083 return ( _LSR & ( 3UL << 5 ) == 0 ) ? true : false; 00084 } 00085 00086 void 00087 MODSERIAL::disableIrq( void ) 00088 { 00089 00090 #ifdef __LPC11UXX_H__ 00091 NVIC_DisableIRQ( UART_IRQn ); 00092 #elif defined MKL25Z4_H_ 00093 switch( _serial.index ) { 00094 case 0: NVIC_DisableIRQ( UART0_IRQn ); break; 00095 case 1: NVIC_DisableIRQ( UART1_IRQn ); break; 00096 case 2: NVIC_DisableIRQ( UART2_IRQn ); break; 00097 } 00098 #else 00099 switch( _serial.index ) { 00100 case 0: NVIC_DisableIRQ( UART0_IRQn ); break; 00101 case 1: NVIC_DisableIRQ( UART1_IRQn ); break; 00102 case 2: NVIC_DisableIRQ( UART2_IRQn ); break; 00103 case 3: NVIC_DisableIRQ( UART3_IRQn ); break; 00104 } 00105 #endif 00106 } 00107 00108 void 00109 MODSERIAL::enableIrq(void) 00110 { 00111 #ifdef __LPC11UXX_H__ 00112 NVIC_EnableIRQ( UART_IRQn ); 00113 #elif defined MKL25Z4_H_ 00114 switch( _serial.index ) { 00115 case 0: NVIC_EnableIRQ( UART0_IRQn ); break; 00116 case 1: NVIC_EnableIRQ( UART1_IRQn ); break; 00117 case 2: NVIC_EnableIRQ( UART2_IRQn ); break; 00118 } 00119 #else 00120 switch( _serial.index ) { 00121 case 0: NVIC_EnableIRQ( UART0_IRQn ); break; 00122 case 1: NVIC_EnableIRQ( UART1_IRQn ); break; 00123 case 2: NVIC_EnableIRQ( UART2_IRQn ); break; 00124 case 3: NVIC_EnableIRQ( UART3_IRQn ); break; 00125 } 00126 #endif 00127 } 00128 00129 int 00130 MODSERIAL::rxDiscardLastChar( void ) 00131 { 00132 // This function can only be called indirectly from 00133 // an rxCallback function. Therefore, we know we 00134 // just placed a char into the buffer. 00135 char c = buffer[RxIrq][buffer_in[RxIrq]]; 00136 00137 if (buffer_count[RxIrq]) { 00138 buffer_count[RxIrq]--; 00139 buffer_in[RxIrq]--; 00140 if (buffer_in[RxIrq] < 0) { 00141 buffer_in[RxIrq] = buffer_size[RxIrq] - 1; 00142 } 00143 } 00144 00145 return (int)c; 00146 } 00147 00148 00149 }; // namespace AjK ends
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