Mike Panetta / MODSERIAL

Modified MODSERIAL library

Dependents:   BeaconAvoid

MODSERIAL.cpp@0:ef4645a79fca, 2012-09-09 (annotated)

Committer:
mpanetta
Date:
Sun Sep 09 22:28:07 2012 +0000
Revision:
0:ef4645a79fca
[mbed] converted /BeaconAvoid/MODSERIAL

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mpanetta 0:ef4645a79fca 1 /*
mpanetta 0:ef4645a79fca 2 Copyright (c) 2010 Andy Kirkham
mpanetta 0:ef4645a79fca 3
mpanetta 0:ef4645a79fca 4 Permission is hereby granted, free of charge, to any person obtaining a copy
mpanetta 0:ef4645a79fca 5 of this software and associated documentation files (the "Software"), to deal
mpanetta 0:ef4645a79fca 6 in the Software without restriction, including without limitation the rights
mpanetta 0:ef4645a79fca 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
mpanetta 0:ef4645a79fca 8 copies of the Software, and to permit persons to whom the Software is
mpanetta 0:ef4645a79fca 9 furnished to do so, subject to the following conditions:
mpanetta 0:ef4645a79fca 10
mpanetta 0:ef4645a79fca 11 The above copyright notice and this permission notice shall be included in
mpanetta 0:ef4645a79fca 12 all copies or substantial portions of the Software.
mpanetta 0:ef4645a79fca 13
mpanetta 0:ef4645a79fca 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
mpanetta 0:ef4645a79fca 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
mpanetta 0:ef4645a79fca 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
mpanetta 0:ef4645a79fca 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
mpanetta 0:ef4645a79fca 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
mpanetta 0:ef4645a79fca 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
mpanetta 0:ef4645a79fca 20 THE SOFTWARE.
mpanetta 0:ef4645a79fca 21
mpanetta 0:ef4645a79fca 22 @file MODSERIAL.h
mpanetta 0:ef4645a79fca 23 @purpose Extends Serial to provide fully buffered IO
mpanetta 0:ef4645a79fca 24 @version 1.6
mpanetta 0:ef4645a79fca 25 @date Nov 2010
mpanetta 0:ef4645a79fca 26 @author Andy Kirkham
mpanetta 0:ef4645a79fca 27 */
mpanetta 0:ef4645a79fca 28
mpanetta 0:ef4645a79fca 29 #include "MODSERIAL.h"
mpanetta 0:ef4645a79fca 30 #include "MACROS.h"
mpanetta 0:ef4645a79fca 31
mpanetta 0:ef4645a79fca 32 namespace AjK {
mpanetta 0:ef4645a79fca 33
mpanetta 0:ef4645a79fca 34 MODSERIAL::MODSERIAL(PinName tx, PinName rx, const char *name) : Serial(tx, rx, name)
mpanetta 0:ef4645a79fca 35 {
mpanetta 0:ef4645a79fca 36 init(MODSERIAL_DEFAULT_TX_BUFFER_SIZE, MODSERIAL_DEFAULT_RX_BUFFER_SIZE);
mpanetta 0:ef4645a79fca 37 }
mpanetta 0:ef4645a79fca 38
mpanetta 0:ef4645a79fca 39 MODSERIAL::MODSERIAL(PinName tx, PinName rx, int bufferSize, const char *name) : Serial(tx, rx, name)
mpanetta 0:ef4645a79fca 40 {
mpanetta 0:ef4645a79fca 41 init(bufferSize, bufferSize);
mpanetta 0:ef4645a79fca 42 }
mpanetta 0:ef4645a79fca 43
mpanetta 0:ef4645a79fca 44 MODSERIAL::MODSERIAL(PinName tx, PinName rx, int txSize, int rxSize, const char *name) : Serial(tx, rx, name)
mpanetta 0:ef4645a79fca 45 {
mpanetta 0:ef4645a79fca 46 init(txSize, rxSize);
mpanetta 0:ef4645a79fca 47 }
mpanetta 0:ef4645a79fca 48
mpanetta 0:ef4645a79fca 49 MODSERIAL::~MODSERIAL()
mpanetta 0:ef4645a79fca 50 {
mpanetta 0:ef4645a79fca 51 disableIrq();
mpanetta 0:ef4645a79fca 52 if (buffer[0] != NULL) free((char *)buffer[0]);
mpanetta 0:ef4645a79fca 53 if (buffer[1] != NULL) free((char *)buffer[1]);
mpanetta 0:ef4645a79fca 54 }
mpanetta 0:ef4645a79fca 55
mpanetta 0:ef4645a79fca 56 bool
mpanetta 0:ef4645a79fca 57 MODSERIAL::txBufferFull(void)
mpanetta 0:ef4645a79fca 58 {
mpanetta 0:ef4645a79fca 59 return MODSERIAL_TX_BUFFER_FULL;
mpanetta 0:ef4645a79fca 60 }
mpanetta 0:ef4645a79fca 61
mpanetta 0:ef4645a79fca 62 bool
mpanetta 0:ef4645a79fca 63 MODSERIAL::rxBufferFull(void)
mpanetta 0:ef4645a79fca 64 {
mpanetta 0:ef4645a79fca 65 return MODSERIAL_RX_BUFFER_FULL;
mpanetta 0:ef4645a79fca 66 }
mpanetta 0:ef4645a79fca 67
mpanetta 0:ef4645a79fca 68 bool
mpanetta 0:ef4645a79fca 69 MODSERIAL::txBufferEmpty(void)
mpanetta 0:ef4645a79fca 70 {
mpanetta 0:ef4645a79fca 71 return MODSERIAL_TX_BUFFER_EMPTY;
mpanetta 0:ef4645a79fca 72 }
mpanetta 0:ef4645a79fca 73
mpanetta 0:ef4645a79fca 74 bool
mpanetta 0:ef4645a79fca 75 MODSERIAL::rxBufferEmpty(void)
mpanetta 0:ef4645a79fca 76 {
mpanetta 0:ef4645a79fca 77 return MODSERIAL_RX_BUFFER_EMPTY;
mpanetta 0:ef4645a79fca 78 }
mpanetta 0:ef4645a79fca 79
mpanetta 0:ef4645a79fca 80 bool
mpanetta 0:ef4645a79fca 81 MODSERIAL::txIsBusy(void)
mpanetta 0:ef4645a79fca 82 {
mpanetta 0:ef4645a79fca 83 return (_LSR & (3UL << 5) == 0) ? true : false;
mpanetta 0:ef4645a79fca 84 }
mpanetta 0:ef4645a79fca 85
mpanetta 0:ef4645a79fca 86 void
mpanetta 0:ef4645a79fca 87 MODSERIAL::disableIrq(void)
mpanetta 0:ef4645a79fca 88 {
mpanetta 0:ef4645a79fca 89 switch(_uidx) {
mpanetta 0:ef4645a79fca 90 case 0: NVIC_DisableIRQ(UART0_IRQn); break;
mpanetta 0:ef4645a79fca 91 case 1: NVIC_DisableIRQ(UART1_IRQn); break;
mpanetta 0:ef4645a79fca 92 case 2: NVIC_DisableIRQ(UART2_IRQn); break;
mpanetta 0:ef4645a79fca 93 case 3: NVIC_DisableIRQ(UART3_IRQn); break;
mpanetta 0:ef4645a79fca 94 }
mpanetta 0:ef4645a79fca 95 }
mpanetta 0:ef4645a79fca 96
mpanetta 0:ef4645a79fca 97 void
mpanetta 0:ef4645a79fca 98 MODSERIAL::enableIrq(void)
mpanetta 0:ef4645a79fca 99 {
mpanetta 0:ef4645a79fca 100 switch(_uidx) {
mpanetta 0:ef4645a79fca 101 case 0: NVIC_EnableIRQ(UART0_IRQn); break;
mpanetta 0:ef4645a79fca 102 case 1: NVIC_EnableIRQ(UART1_IRQn); break;
mpanetta 0:ef4645a79fca 103 case 2: NVIC_EnableIRQ(UART2_IRQn); break;
mpanetta 0:ef4645a79fca 104 case 3: NVIC_EnableIRQ(UART3_IRQn); break;
mpanetta 0:ef4645a79fca 105 }
mpanetta 0:ef4645a79fca 106 }
mpanetta 0:ef4645a79fca 107
mpanetta 0:ef4645a79fca 108 int
mpanetta 0:ef4645a79fca 109 MODSERIAL::rxDiscardLastChar(void)
mpanetta 0:ef4645a79fca 110 {
mpanetta 0:ef4645a79fca 111 // This function can only be called indirectly from
mpanetta 0:ef4645a79fca 112 // an rxCallback function. Therefore, we know we
mpanetta 0:ef4645a79fca 113 // just placed a char into the buffer.
mpanetta 0:ef4645a79fca 114 char c = buffer[RxIrq][buffer_in[RxIrq]];
mpanetta 0:ef4645a79fca 115
mpanetta 0:ef4645a79fca 116 if (buffer_count[RxIrq]) {
mpanetta 0:ef4645a79fca 117 buffer_count[RxIrq]--;
mpanetta 0:ef4645a79fca 118 buffer_in[RxIrq]--;
mpanetta 0:ef4645a79fca 119 if (buffer_in[RxIrq] < 0) {
mpanetta 0:ef4645a79fca 120 buffer_in[RxIrq] = buffer_size[RxIrq] - 1;
mpanetta 0:ef4645a79fca 121 }
mpanetta 0:ef4645a79fca 122 }
mpanetta 0:ef4645a79fca 123
mpanetta 0:ef4645a79fca 124 return (int)c;
mpanetta 0:ef4645a79fca 125 }
mpanetta 0:ef4645a79fca 126
mpanetta 0:ef4645a79fca 127
mpanetta 0:ef4645a79fca 128 }; // namespace AjK ends