Fahad Mirza / MODSERIAL

MODSERIAL with support for more devices

Fork of MODSERIAL by Erik -

MODSERIAL.cpp@18:21ef26402365, 2011-04-21 (annotated)

Committer:
AjK
Date:
Thu Apr 21 09:20:41 2011 +0000
Revision:
18:21ef26402365
Parent:
9:b3cdae80e7a9
Child:
23:5c45c21f36b7
1.18 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 0:eb2522b41db8 34 MODSERIAL::MODSERIAL(PinName tx, PinName rx, const char *name) : Serial(tx, rx, name)
AjK 0:eb2522b41db8 35 {
AjK 0:eb2522b41db8 36 init(MODSERIAL_DEFAULT_TX_BUFFER_SIZE, MODSERIAL_DEFAULT_RX_BUFFER_SIZE);
AjK 0:eb2522b41db8 37 }
AjK 0:eb2522b41db8 38
AjK 0:eb2522b41db8 39 MODSERIAL::MODSERIAL(PinName tx, PinName rx, int bufferSize, const char *name) : Serial(tx, rx, name)
AjK 0:eb2522b41db8 40 {
AjK 0:eb2522b41db8 41 init(bufferSize, bufferSize);
AjK 0:eb2522b41db8 42 }
AjK 0:eb2522b41db8 43
AjK 0:eb2522b41db8 44 MODSERIAL::MODSERIAL(PinName tx, PinName rx, int txSize, int rxSize, const char *name) : Serial(tx, rx, name)
AjK 0:eb2522b41db8 45 {
AjK 0:eb2522b41db8 46 init(txSize, rxSize);
AjK 0:eb2522b41db8 47 }
AjK 0:eb2522b41db8 48
AjK 0:eb2522b41db8 49 MODSERIAL::~MODSERIAL()
AjK 0:eb2522b41db8 50 {
AjK 0:eb2522b41db8 51 disableIrq();
AjK 0:eb2522b41db8 52 if (buffer[0] != NULL) free((char *)buffer[0]);
AjK 4:28de979b77cf 53 if (buffer[1] != NULL) free((char *)buffer[1]);
AjK 0:eb2522b41db8 54 }
AjK 0:eb2522b41db8 55
AjK 0:eb2522b41db8 56 bool
AjK 0:eb2522b41db8 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 0:eb2522b41db8 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 0:eb2522b41db8 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 0:eb2522b41db8 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 2:b936b4acbd92 81 MODSERIAL::txIsBusy(void)
AjK 2:b936b4acbd92 82 {
AjK 2:b936b4acbd92 83 return (_LSR & (3UL << 5) == 0) ? true : false;
AjK 2:b936b4acbd92 84 }
AjK 2:b936b4acbd92 85
AjK 0:eb2522b41db8 86 void
AjK 0:eb2522b41db8 87 MODSERIAL::disableIrq(void)
AjK 0:eb2522b41db8 88 {
AjK 0:eb2522b41db8 89 switch(_uidx) {
AjK 0:eb2522b41db8 90 case 0: NVIC_DisableIRQ(UART0_IRQn); break;
AjK 0:eb2522b41db8 91 case 1: NVIC_DisableIRQ(UART1_IRQn); break;
AjK 0:eb2522b41db8 92 case 2: NVIC_DisableIRQ(UART2_IRQn); break;
AjK 0:eb2522b41db8 93 case 3: NVIC_DisableIRQ(UART3_IRQn); break;
AjK 0:eb2522b41db8 94 }
AjK 0:eb2522b41db8 95 }
AjK 0:eb2522b41db8 96
AjK 0:eb2522b41db8 97 void
AjK 0:eb2522b41db8 98 MODSERIAL::enableIrq(void)
AjK 0:eb2522b41db8 99 {
AjK 0:eb2522b41db8 100 switch(_uidx) {
AjK 0:eb2522b41db8 101 case 0: NVIC_EnableIRQ(UART0_IRQn); break;
AjK 0:eb2522b41db8 102 case 1: NVIC_EnableIRQ(UART1_IRQn); break;
AjK 0:eb2522b41db8 103 case 2: NVIC_EnableIRQ(UART2_IRQn); break;
AjK 0:eb2522b41db8 104 case 3: NVIC_EnableIRQ(UART3_IRQn); break;
AjK 0:eb2522b41db8 105 }
AjK 0:eb2522b41db8 106 }
AjK 0:eb2522b41db8 107
AjK 18:21ef26402365 108 int
AjK 18:21ef26402365 109 MODSERIAL::rxDiscardLastChar(void)
AjK 18:21ef26402365 110 {
AjK 18:21ef26402365 111 // This function can only be called indirectly from
AjK 18:21ef26402365 112 // an rxCallback function. Therefore, we know we
AjK 18:21ef26402365 113 // just placed a char into the buffer.
AjK 18:21ef26402365 114 char c = buffer[RxIrq][buffer_in[RxIrq]];
AjK 18:21ef26402365 115
AjK 18:21ef26402365 116 if (buffer_count[RxIrq]) {
AjK 18:21ef26402365 117 buffer_count[RxIrq]--;
AjK 18:21ef26402365 118 buffer_in[RxIrq]--;
AjK 18:21ef26402365 119 if (buffer_in[RxIrq] < 0) {
AjK 18:21ef26402365 120 buffer_in[RxIrq] = buffer_size[RxIrq] - 1;
AjK 18:21ef26402365 121 }
AjK 18:21ef26402365 122 }
AjK 18:21ef26402365 123
AjK 18:21ef26402365 124 return (int)c;
AjK 18:21ef26402365 125 }
AjK 18:21ef26402365 126
AjK 9:b3cdae80e7a9 127
AjK 0:eb2522b41db8 128 }; // namespace AjK ends