INIT.cpp

00001 /*
00002     Copyright (c) 2010 Andy Kirkham
00003  
00004     Permission is hereby granted, free of charge, to any person obtaining a copy
00005     of this software and associated documentation files (the "Software"), to deal
00006     in the Software without restriction, including without limitation the rights
00007     to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00008     copies of the Software, and to permit persons to whom the Software is
00009     furnished to do so, subject to the following conditions:
00010  
00011     The above copyright notice and this permission notice shall be included in
00012     all copies or substantial portions of the Software.
00013  
00014     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00015     IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00016     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00017     AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00018     LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00019     OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00020     THE SOFTWARE.
00021 */
00022 
00023 #include "MODSERIAL.h"
00024 #include "MACROS.h"
00025 
00026 
00027 namespace AjK {
00028 
00029 void
00030 MODSERIAL::init( int txSize, int rxSize, PinName rx )
00031 {
00032     disableIrq();
00033     
00034     callbackInfo.setSerial(this);
00035 
00036 #ifdef __LPC11UXX_H__
00037 
00038     _base = LPC_USART;
00039     
00040 #elif defined __LPC11xx_H__
00041 
00042    _base = LPC_UART;
00043    
00044 #else    
00045     switch( _serial.index ) {
00046         case 0: _base = LPC_UART0; break;
00047         case 1: _base = LPC_UART1; break;
00048         case 2: _base = LPC_UART2; break;
00049         case 3: _base = LPC_UART3; break;
00050         default: _base = NULL;      break;
00051     }
00052 #endif
00053     
00054     dmaSendChannel  = -1;
00055     moddma_p        = (void *)NULL;
00056     
00057     if ( _base != NULL ) {
00058         buffer_size[RxIrq]     = rxSize;
00059         buffer[RxIrq]          = rxSize > 0 ? (char *)malloc(buffer_size[RxIrq]) : (char *)NULL;
00060         buffer_in[RxIrq]       = 0;
00061         buffer_out[RxIrq]      = 0;
00062         buffer_count[RxIrq]    = 0;
00063         buffer_overflow[RxIrq] = 0;
00064         Serial::attach( this, &MODSERIAL::isr_rx, Serial::RxIrq );        
00065         
00066         buffer_size[TxIrq]     = txSize;
00067         buffer[TxIrq]          = txSize > 0 ? (char *)malloc(buffer_size[TxIrq]) : (char *)NULL;
00068         buffer_in[TxIrq]       = 0;
00069         buffer_out[TxIrq]      = 0;
00070         buffer_count[TxIrq]    = 0;
00071         buffer_overflow[TxIrq] = 0;
00072         Serial::attach( this, &MODSERIAL::isr_tx, Serial::TxIrq );
00073     }
00074     else {
00075         error("MODSERIAL must have a defined UART to function.");
00076     }
00077     
00078     _FCR = MODSERIAL_FIFO_ENABLE | MODSERIAL_FIFO_RX_RESET | MODSERIAL_FIFO_TX_RESET;
00079     
00080     auto_detect_char = 0;
00081     
00082     enableIrq();
00083 }
00084 
00085 }; // namespace AjK ends