A talking braille-input text message device!!
Dependencies: Braille_In PinDetect mbed
MODSERIAL/MODSERIAL.cpp
- Committer:
- aganger3
- Date:
- 2012-10-12
- Revision:
- 0:c79379695e18
File content as of revision 0:c79379695e18:
/* Copyright (c) 2010 Andy Kirkham Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. @file MODSERIAL.h @purpose Extends Serial to provide fully buffered IO @version 1.6 @date Nov 2010 @author Andy Kirkham */ #include "MODSERIAL.h" #include "MACROS.h" namespace AjK { MODSERIAL::MODSERIAL(PinName tx, PinName rx, const char *name) : Serial(tx, rx, name) { init(MODSERIAL_DEFAULT_TX_BUFFER_SIZE, MODSERIAL_DEFAULT_RX_BUFFER_SIZE); } MODSERIAL::MODSERIAL(PinName tx, PinName rx, int bufferSize, const char *name) : Serial(tx, rx, name) { init(bufferSize, bufferSize); } MODSERIAL::MODSERIAL(PinName tx, PinName rx, int txSize, int rxSize, const char *name) : Serial(tx, rx, name) { init(txSize, rxSize); } MODSERIAL::~MODSERIAL() { disableIrq(); if (buffer[0] != NULL) free((char *)buffer[0]); if (buffer[1] != NULL) free((char *)buffer[1]); } bool MODSERIAL::txBufferFull(void) { return MODSERIAL_TX_BUFFER_FULL; } bool MODSERIAL::rxBufferFull(void) { return MODSERIAL_RX_BUFFER_FULL; } bool MODSERIAL::txBufferEmpty(void) { return MODSERIAL_TX_BUFFER_EMPTY; } bool MODSERIAL::rxBufferEmpty(void) { return MODSERIAL_RX_BUFFER_EMPTY; } bool MODSERIAL::txIsBusy(void) { return (_LSR & (3UL << 5) == 0) ? true : false; } void MODSERIAL::disableIrq(void) { switch(_uidx) { case 0: NVIC_DisableIRQ(UART0_IRQn); break; case 1: NVIC_DisableIRQ(UART1_IRQn); break; case 2: NVIC_DisableIRQ(UART2_IRQn); break; case 3: NVIC_DisableIRQ(UART3_IRQn); break; } } void MODSERIAL::enableIrq(void) { switch(_uidx) { case 0: NVIC_EnableIRQ(UART0_IRQn); break; case 1: NVIC_EnableIRQ(UART1_IRQn); break; case 2: NVIC_EnableIRQ(UART2_IRQn); break; case 3: NVIC_EnableIRQ(UART3_IRQn); break; } } int MODSERIAL::rxDiscardLastChar(void) { // This function can only be called indirectly from // an rxCallback function. Therefore, we know we // just placed a char into the buffer. char c = buffer[RxIrq][buffer_in[RxIrq]]; if (buffer_count[RxIrq]) { buffer_count[RxIrq]--; buffer_in[RxIrq]--; if (buffer_in[RxIrq] < 0) { buffer_in[RxIrq] = buffer_size[RxIrq] - 1; } } return (int)c; } }; // namespace AjK ends