mirror of
https://github.com/halleysfifthinc/sniffer2
synced 2025-06-07 07:56:14 +00:00
136 lines
3.7 KiB
C
136 lines
3.7 KiB
C
/*
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Copyright (C) 2006 Marcin Slonicki <marcin@softservice.com.pl>.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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-----------------------------------------------------------------------
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this file is a part of the TOYOTA Corolla MP3 Player Project
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-----------------------------------------------------------------------
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http://www.softservice.com.pl/corolla/avc
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May 28 / 2009 - version 2
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*/
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#include <avr/io.h>
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#include <avr/interrupt.h>
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#include <avr/pgmspace.h>
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#include "com232.h"
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#ifndef F_CPU
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#error F_CPU not defined!
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#endif
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#if F_CPU!=14745000
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#error we need 14.745000 MHz crystal
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#endif
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//------------------------------------------------------------------------------
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void RS232_Init(void)
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{
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// init LED
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sbi(DDRB, 0);
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cbi(PORTB, 0);
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RS232_RxCharBegin = RS232_RxCharEnd = 0;
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// enable RxD/TxD and interrupts
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UCSR0A = 0;
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UCSR0B = ((1<<RXCIE0) | (1<<RXEN0) | (1<<TXEN0)); // enable RxD/TxD and interrupts
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UCSR0C = ((1<<UCSZ01)|(1<<UCSZ00)); // 8N1
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UBRR0 = 7;
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}
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//------------------------------------------------------------------------------
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SIGNAL(SIG_USART_RECV)
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{
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RS232_RxCharBuffer[RS232_RxCharEnd] = UDR0; // Store received character to the End of Buffer
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RS232_RxCharEnd++;
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}
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//------------------------------------------------------------------------------
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void RS232_SendByte(u08 Data)
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{
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while ((UCSR0A & _BV(UDRE0)) != _BV(UDRE0)); // wait for UART to become available
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UDR0 = Data; // send character
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}
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//------------------------------------------------------------------------------
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void RS232_S(u16 str_addr)
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{
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register u08 c;
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while ( (c = pgm_read_byte(str_addr++) ) )
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{
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if (c == '\n')
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RS232_SendByte('\r');
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RS232_SendByte(c);
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}
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}
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//------------------------------------------------------------------------------
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void RS232_Print(char* pBuf)
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{
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register u08 c;
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while ((c = *pBuf++))
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{
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if (c == '\n')
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RS232_SendByte('\r');
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RS232_SendByte(c);
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}
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}
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//------------------------------------------------------------------------------
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void RS232_PrintHex4(u08 Data)
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{
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u08 Character = Data & 0x0f;
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Character += '0';
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if (Character > '9')
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Character += 'A' - '0' - 10;
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RS232_SendByte(Character);
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}
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//------------------------------------------------------------------------------
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void RS232_PrintHex8(u08 Data)
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{
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RS232_PrintHex4(Data >> 4);
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RS232_PrintHex4(Data);
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}
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//------------------------------------------------------------------------------
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void RS232_PrintDec(u08 Data)
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{
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if (Data>99) {
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RS232_SendByte('*');
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return;
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}
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if (Data<10) {
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RS232_SendByte('0'+Data);
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return;
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}
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u08 c;
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u16 v,v1;
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v = Data;
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v1 = v/10;
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c = '0' + (v-v1*10);
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RS232_SendByte('0'+v1);
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RS232_SendByte(c);
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}
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//------------------------------------------------------------------------------
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void RS232_PrintDec2(u08 Data)
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{
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if (Data<10) RS232_SendByte('0');
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RS232_PrintDec(Data);
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}
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//------------------------------------------------------------------------------
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