Amanda Travieso / MODSERIAL1

Library Fork

Fork of MODSERIAL by Andy K

MODSERIAL.cpp@25:ae0408ebdd68, 2013-01-08 (annotated)

Committer:
AjK
Date:
Tue Jan 08 18:01:03 2013 +0000
Revision:
25:ae0408ebdd68
Parent:
24:9c456e647a8f 
See ChangeLog.c

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AjK 0:eb2522b41db8 1 /*
AjK 0:eb2522b41db8 2 Copyright (c) 2010 Andy Kirkham
AjK 0:eb2522b41db8 3
AjK 0:eb2522b41db8 4 Permission is hereby granted, free of charge, to any person obtaining a copy
AjK 0:eb2522b41db8 5 of this software and associated documentation files (the "Software"), to deal
AjK 0:eb2522b41db8 6 in the Software without restriction, including without limitation the rights
AjK 0:eb2522b41db8 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
AjK 0:eb2522b41db8 8 copies of the Software, and to permit persons to whom the Software is
AjK 0:eb2522b41db8 9 furnished to do so, subject to the following conditions:
AjK 0:eb2522b41db8 10
AjK 0:eb2522b41db8 11 The above copyright notice and this permission notice shall be included in
AjK 0:eb2522b41db8 12 all copies or substantial portions of the Software.
AjK 0:eb2522b41db8 13
AjK 0:eb2522b41db8 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
AjK 0:eb2522b41db8 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
AjK 0:eb2522b41db8 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AjK 0:eb2522b41db8 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
AjK 0:eb2522b41db8 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
AjK 0:eb2522b41db8 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
AjK 0:eb2522b41db8 20 THE SOFTWARE.
AjK 7:ffa4a7cb7f8d 21
AjK 7:ffa4a7cb7f8d 22 @file MODSERIAL.h
AjK 7:ffa4a7cb7f8d 23 @purpose Extends Serial to provide fully buffered IO
AjK 7:ffa4a7cb7f8d 24 @version 1.6
AjK 7:ffa4a7cb7f8d 25 @date Nov 2010
AjK 7:ffa4a7cb7f8d 26 @author Andy Kirkham
AjK 0:eb2522b41db8 27 */
AjK 0:eb2522b41db8 28
AjK 0:eb2522b41db8 29 #include "MODSERIAL.h"
AjK 0:eb2522b41db8 30 #include "MACROS.h"
AjK 0:eb2522b41db8 31
AjK 0:eb2522b41db8 32 namespace AjK {
AjK 0:eb2522b41db8 33
AjK 25:ae0408ebdd68 34 MODSERIAL::MODSERIAL( PinName tx, PinName rx, const char* name ) : Serial( tx, rx, name )
AjK 0:eb2522b41db8 35 {
AjK 24:9c456e647a8f 36 init( MODSERIAL_DEFAULT_TX_BUFFER_SIZE, MODSERIAL_DEFAULT_RX_BUFFER_SIZE, rx );
AjK 0:eb2522b41db8 37 }
AjK 0:eb2522b41db8 38
AjK 25:ae0408ebdd68 39 MODSERIAL::MODSERIAL( PinName tx, PinName rx, int bufferSize, const char* name ) : Serial( tx, rx, name )
AjK 0:eb2522b41db8 40 {
AjK 24:9c456e647a8f 41 init( bufferSize, bufferSize, rx );
AjK 0:eb2522b41db8 42 }
AjK 0:eb2522b41db8 43
AjK 25:ae0408ebdd68 44 MODSERIAL::MODSERIAL( PinName tx, PinName rx, int txSize, int rxSize, const char* name ) : Serial( tx, rx, name )
AjK 0:eb2522b41db8 45 {
AjK 24:9c456e647a8f 46 init( txSize, rxSize, rx );
AjK 0:eb2522b41db8 47 }
AjK 0:eb2522b41db8 48
AjK 0:eb2522b41db8 49 MODSERIAL::~MODSERIAL()
AjK 0:eb2522b41db8 50 {
AjK 0:eb2522b41db8 51 disableIrq();
AjK 23:5c45c21f36b7 52 if ( buffer[0] != NULL) free((char *)buffer[0] );
AjK 23:5c45c21f36b7 53 if ( buffer[1] != NULL) free((char *)buffer[1] );
AjK 0:eb2522b41db8 54 }
AjK 0:eb2522b41db8 55
AjK 0:eb2522b41db8 56 bool
AjK 23:5c45c21f36b7 57 MODSERIAL::txBufferFull( void )
AjK 0:eb2522b41db8 58 {
AjK 0:eb2522b41db8 59 return MODSERIAL_TX_BUFFER_FULL;
AjK 0:eb2522b41db8 60 }
AjK 0:eb2522b41db8 61
AjK 0:eb2522b41db8 62 bool
AjK 23:5c45c21f36b7 63 MODSERIAL::rxBufferFull( void )
AjK 0:eb2522b41db8 64 {
AjK 0:eb2522b41db8 65 return MODSERIAL_RX_BUFFER_FULL;
AjK 0:eb2522b41db8 66 }
AjK 0:eb2522b41db8 67
AjK 0:eb2522b41db8 68 bool
AjK 23:5c45c21f36b7 69 MODSERIAL::txBufferEmpty( void )
AjK 0:eb2522b41db8 70 {
AjK 0:eb2522b41db8 71 return MODSERIAL_TX_BUFFER_EMPTY;
AjK 0:eb2522b41db8 72 }
AjK 0:eb2522b41db8 73
AjK 0:eb2522b41db8 74 bool
AjK 23:5c45c21f36b7 75 MODSERIAL::rxBufferEmpty( void )
AjK 0:eb2522b41db8 76 {
AjK 0:eb2522b41db8 77 return MODSERIAL_RX_BUFFER_EMPTY;
AjK 0:eb2522b41db8 78 }
AjK 0:eb2522b41db8 79
AjK 2:b936b4acbd92 80 bool
AjK 23:5c45c21f36b7 81 MODSERIAL::txIsBusy( void )
AjK 2:b936b4acbd92 82 {
AjK 23:5c45c21f36b7 83 return ( _LSR & ( 3UL << 5 ) == 0 ) ? true : false;
AjK 2:b936b4acbd92 84 }
AjK 2:b936b4acbd92 85
AjK 0:eb2522b41db8 86 void
AjK 23:5c45c21f36b7 87 MODSERIAL::disableIrq( void )
AjK 0:eb2522b41db8 88 {
AjK 23:5c45c21f36b7 89
AjK 23:5c45c21f36b7 90 #ifdef __LPC11UXX_H__
AjK 23:5c45c21f36b7 91 NVIC_DisableIRQ( UART_IRQn );
AjK 23:5c45c21f36b7 92 #else
AjK 24:9c456e647a8f 93 switch( _serial.index ) {
AjK 23:5c45c21f36b7 94 case 0: NVIC_DisableIRQ( UART0_IRQn ); break;
AjK 23:5c45c21f36b7 95 case 1: NVIC_DisableIRQ( UART1_IRQn ); break;
AjK 23:5c45c21f36b7 96 case 2: NVIC_DisableIRQ( UART2_IRQn ); break;
AjK 23:5c45c21f36b7 97 case 3: NVIC_DisableIRQ( UART3_IRQn ); break;
AjK 0:eb2522b41db8 98 }
AjK 23:5c45c21f36b7 99 #endif
AjK 0:eb2522b41db8 100 }
AjK 0:eb2522b41db8 101
AjK 0:eb2522b41db8 102 void
AjK 0:eb2522b41db8 103 MODSERIAL::enableIrq(void)
AjK 0:eb2522b41db8 104 {
AjK 23:5c45c21f36b7 105 #ifdef __LPC11UXX_H__
AjK 23:5c45c21f36b7 106 NVIC_EnableIRQ( UART_IRQn );
AjK 23:5c45c21f36b7 107 #else
AjK 24:9c456e647a8f 108 switch( _serial.index ) {
AjK 23:5c45c21f36b7 109 case 0: NVIC_EnableIRQ( UART0_IRQn ); break;
AjK 23:5c45c21f36b7 110 case 1: NVIC_EnableIRQ( UART1_IRQn ); break;
AjK 23:5c45c21f36b7 111 case 2: NVIC_EnableIRQ( UART2_IRQn ); break;
AjK 23:5c45c21f36b7 112 case 3: NVIC_EnableIRQ( UART3_IRQn ); break;
AjK 0:eb2522b41db8 113 }
AjK 23:5c45c21f36b7 114 #endif
AjK 0:eb2522b41db8 115 }
AjK 0:eb2522b41db8 116
AjK 18:21ef26402365 117 int
AjK 23:5c45c21f36b7 118 MODSERIAL::rxDiscardLastChar( void )
AjK 18:21ef26402365 119 {
AjK 18:21ef26402365 120 // This function can only be called indirectly from
AjK 18:21ef26402365 121 // an rxCallback function. Therefore, we know we
AjK 18:21ef26402365 122 // just placed a char into the buffer.
AjK 18:21ef26402365 123 char c = buffer[RxIrq][buffer_in[RxIrq]];
AjK 18:21ef26402365 124
AjK 18:21ef26402365 125 if (buffer_count[RxIrq]) {
AjK 18:21ef26402365 126 buffer_count[RxIrq]--;
AjK 18:21ef26402365 127 buffer_in[RxIrq]--;
AjK 18:21ef26402365 128 if (buffer_in[RxIrq] < 0) {
AjK 18:21ef26402365 129 buffer_in[RxIrq] = buffer_size[RxIrq] - 1;
AjK 18:21ef26402365 130 }
AjK 18:21ef26402365 131 }
AjK 18:21ef26402365 132
AjK 18:21ef26402365 133 return (int)c;
AjK 18:21ef26402365 134 }
AjK 18:21ef26402365 135
AjK 9:b3cdae80e7a9 136
AjK 0:eb2522b41db8 137 }; // namespace AjK ends