Derek Fukumori / MODSERIAL

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Fork of MODSERIAL by Andy K

MODSERIAL.cpp@23:1236d0b64e71, 2012-07-13 (annotated)

Committer:
dfukumori
Date:
Fri Jul 13 01:09:23 2012 +0000
Revision:
23:1236d0b64e71
Parent:
18:21ef26402365 
Required commit -- no changes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dfukumori 23:1236d0b64e71 1 /*
dfukumori 23:1236d0b64e71 2 Copyright (c) 2010 Andy Kirkham
dfukumori 23:1236d0b64e71 3
dfukumori 23:1236d0b64e71 4 Permission is hereby granted, free of charge, to any person obtaining a copy
dfukumori 23:1236d0b64e71 5 of this software and associated documentation files (the "Software"), to deal
dfukumori 23:1236d0b64e71 6 in the Software without restriction, including without limitation the rights
dfukumori 23:1236d0b64e71 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
dfukumori 23:1236d0b64e71 8 copies of the Software, and to permit persons to whom the Software is
dfukumori 23:1236d0b64e71 9 furnished to do so, subject to the following conditions:
dfukumori 23:1236d0b64e71 10
dfukumori 23:1236d0b64e71 11 The above copyright notice and this permission notice shall be included in
dfukumori 23:1236d0b64e71 12 all copies or substantial portions of the Software.
dfukumori 23:1236d0b64e71 13
dfukumori 23:1236d0b64e71 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
dfukumori 23:1236d0b64e71 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
dfukumori 23:1236d0b64e71 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
dfukumori 23:1236d0b64e71 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
dfukumori 23:1236d0b64e71 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
dfukumori 23:1236d0b64e71 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
dfukumori 23:1236d0b64e71 20 THE SOFTWARE.
dfukumori 23:1236d0b64e71 21
dfukumori 23:1236d0b64e71 22 @file MODSERIAL.h
dfukumori 23:1236d0b64e71 23 @purpose Extends Serial to provide fully buffered IO
dfukumori 23:1236d0b64e71 24 @version 1.6
dfukumori 23:1236d0b64e71 25 @date Nov 2010
dfukumori 23:1236d0b64e71 26 @author Andy Kirkham
dfukumori 23:1236d0b64e71 27 */
dfukumori 23:1236d0b64e71 28
dfukumori 23:1236d0b64e71 29 #include "MODSERIAL.h"
dfukumori 23:1236d0b64e71 30 #include "MACROS.h"
dfukumori 23:1236d0b64e71 31
dfukumori 23:1236d0b64e71 32 namespace AjK {
dfukumori 23:1236d0b64e71 33
dfukumori 23:1236d0b64e71 34 MODSERIAL::MODSERIAL(PinName tx, PinName rx, const char *name) : Serial(tx, rx, name)
dfukumori 23:1236d0b64e71 35 {
dfukumori 23:1236d0b64e71 36 init(MODSERIAL_DEFAULT_TX_BUFFER_SIZE, MODSERIAL_DEFAULT_RX_BUFFER_SIZE);
dfukumori 23:1236d0b64e71 37 }
dfukumori 23:1236d0b64e71 38
dfukumori 23:1236d0b64e71 39 MODSERIAL::MODSERIAL(PinName tx, PinName rx, int bufferSize, const char *name) : Serial(tx, rx, name)
dfukumori 23:1236d0b64e71 40 {
dfukumori 23:1236d0b64e71 41 init(bufferSize, bufferSize);
dfukumori 23:1236d0b64e71 42 }
dfukumori 23:1236d0b64e71 43
dfukumori 23:1236d0b64e71 44 MODSERIAL::MODSERIAL(PinName tx, PinName rx, int txSize, int rxSize, const char *name) : Serial(tx, rx, name)
dfukumori 23:1236d0b64e71 45 {
dfukumori 23:1236d0b64e71 46 init(txSize, rxSize);
dfukumori 23:1236d0b64e71 47 }
dfukumori 23:1236d0b64e71 48
dfukumori 23:1236d0b64e71 49 MODSERIAL::~MODSERIAL()
dfukumori 23:1236d0b64e71 50 {
dfukumori 23:1236d0b64e71 51 disableIrq();
dfukumori 23:1236d0b64e71 52 if (buffer[0] != NULL) free((char *)buffer[0]);
dfukumori 23:1236d0b64e71 53 if (buffer[1] != NULL) free((char *)buffer[1]);
dfukumori 23:1236d0b64e71 54 }
dfukumori 23:1236d0b64e71 55
dfukumori 23:1236d0b64e71 56 bool
dfukumori 23:1236d0b64e71 57 MODSERIAL::txBufferFull(void)
dfukumori 23:1236d0b64e71 58 {
dfukumori 23:1236d0b64e71 59 return MODSERIAL_TX_BUFFER_FULL;
dfukumori 23:1236d0b64e71 60 }
dfukumori 23:1236d0b64e71 61
dfukumori 23:1236d0b64e71 62 bool
dfukumori 23:1236d0b64e71 63 MODSERIAL::rxBufferFull(void)
dfukumori 23:1236d0b64e71 64 {
dfukumori 23:1236d0b64e71 65 return MODSERIAL_RX_BUFFER_FULL;
dfukumori 23:1236d0b64e71 66 }
dfukumori 23:1236d0b64e71 67
dfukumori 23:1236d0b64e71 68 bool
dfukumori 23:1236d0b64e71 69 MODSERIAL::txBufferEmpty(void)
dfukumori 23:1236d0b64e71 70 {
dfukumori 23:1236d0b64e71 71 return MODSERIAL_TX_BUFFER_EMPTY;
dfukumori 23:1236d0b64e71 72 }
dfukumori 23:1236d0b64e71 73
dfukumori 23:1236d0b64e71 74 bool
dfukumori 23:1236d0b64e71 75 MODSERIAL::rxBufferEmpty(void)
dfukumori 23:1236d0b64e71 76 {
dfukumori 23:1236d0b64e71 77 return MODSERIAL_RX_BUFFER_EMPTY;
dfukumori 23:1236d0b64e71 78 }
dfukumori 23:1236d0b64e71 79
dfukumori 23:1236d0b64e71 80 bool
dfukumori 23:1236d0b64e71 81 MODSERIAL::txIsBusy(void)
dfukumori 23:1236d0b64e71 82 {
dfukumori 23:1236d0b64e71 83 return (_LSR & (3UL << 5) == 0) ? true : false;
dfukumori 23:1236d0b64e71 84 }
dfukumori 23:1236d0b64e71 85
dfukumori 23:1236d0b64e71 86 void
dfukumori 23:1236d0b64e71 87 MODSERIAL::disableIrq(void)
dfukumori 23:1236d0b64e71 88 {
dfukumori 23:1236d0b64e71 89 switch(_uidx) {
dfukumori 23:1236d0b64e71 90 case 0: NVIC_DisableIRQ(UART0_IRQn); break;
dfukumori 23:1236d0b64e71 91 case 1: NVIC_DisableIRQ(UART1_IRQn); break;
dfukumori 23:1236d0b64e71 92 case 2: NVIC_DisableIRQ(UART2_IRQn); break;
dfukumori 23:1236d0b64e71 93 case 3: NVIC_DisableIRQ(UART3_IRQn); break;
dfukumori 23:1236d0b64e71 94 }
dfukumori 23:1236d0b64e71 95 }
dfukumori 23:1236d0b64e71 96
dfukumori 23:1236d0b64e71 97 void
dfukumori 23:1236d0b64e71 98 MODSERIAL::enableIrq(void)
dfukumori 23:1236d0b64e71 99 {
dfukumori 23:1236d0b64e71 100 switch(_uidx) {
dfukumori 23:1236d0b64e71 101 case 0: NVIC_EnableIRQ(UART0_IRQn); break;
dfukumori 23:1236d0b64e71 102 case 1: NVIC_EnableIRQ(UART1_IRQn); break;
dfukumori 23:1236d0b64e71 103 case 2: NVIC_EnableIRQ(UART2_IRQn); break;
dfukumori 23:1236d0b64e71 104 case 3: NVIC_EnableIRQ(UART3_IRQn); break;
dfukumori 23:1236d0b64e71 105 }
dfukumori 23:1236d0b64e71 106 }
dfukumori 23:1236d0b64e71 107
dfukumori 23:1236d0b64e71 108 int
dfukumori 23:1236d0b64e71 109 MODSERIAL::rxDiscardLastChar(void)
dfukumori 23:1236d0b64e71 110 {
dfukumori 23:1236d0b64e71 111 // This function can only be called indirectly from
dfukumori 23:1236d0b64e71 112 // an rxCallback function. Therefore, we know we
dfukumori 23:1236d0b64e71 113 // just placed a char into the buffer.
dfukumori 23:1236d0b64e71 114 char c = buffer[RxIrq][buffer_in[RxIrq]];
dfukumori 23:1236d0b64e71 115
dfukumori 23:1236d0b64e71 116 if (buffer_count[RxIrq]) {
dfukumori 23:1236d0b64e71 117 buffer_count[RxIrq]--;
dfukumori 23:1236d0b64e71 118 buffer_in[RxIrq]--;
dfukumori 23:1236d0b64e71 119 if (buffer_in[RxIrq] < 0) {
dfukumori 23:1236d0b64e71 120 buffer_in[RxIrq] = buffer_size[RxIrq] - 1;
dfukumori 23:1236d0b64e71 121 }
dfukumori 23:1236d0b64e71 122 }
dfukumori 23:1236d0b64e71 123
dfukumori 23:1236d0b64e71 124 return (int)c;
dfukumori 23:1236d0b64e71 125 }
dfukumori 23:1236d0b64e71 126
dfukumori 23:1236d0b64e71 127
dfukumori 23:1236d0b64e71 128 }; // namespace AjK ends