mirror of
https://github.com/Oleg-Stepanenko-owo/IEBUS
synced 2025-06-11 18:06:09 +00:00
177 lines
3.8 KiB
C++
177 lines
3.8 KiB
C++
/*
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BuffSerial.cpp - serial with transmit buffer library for Wiring
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Created by Kochetkov Aleksey, 28.11.2009
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Version 0.1.2
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*/
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#include <stdio.h>
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#include "BuffSerial.h"
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// serial init
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void BuffSerial::begin(long speed){
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#if defined(__AVR_ATmega8__)
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UCSRB = _BV(RXCIE) | _BV(RXEN) | _BV(TXCIE) | _BV(TXEN); // enable rx, tx inerrputs
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UBRRH = ((F_CPU / 16 + speed / 2) / speed - 1) >> 8; // usart speed
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UBRRL = ((F_CPU / 16 + speed / 2) / speed - 1);
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#else
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UCSR0B = (_BV(RXCIE0) | _BV(RXEN0) | _BV(TXCIE0) | _BV(TXEN0)); // enable rx, tx inerrputs
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UBRR0H = ((F_CPU / 16 + speed / 2) / speed - 1) >> 8; // usart speed
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UBRR0L = ((F_CPU / 16 + speed / 2) / speed - 1);
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#endif
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rxBegin = rxEnd = 0;
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txBegin = txEnd = txOverflow = 0;
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txFull = 0;
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}
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//USART Rx Complete
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#if defined(__AVR_ATmega8__)
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SIGNAL(SIG_UART_RECV)
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#else
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SIGNAL(USART_RX_vect)
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#endif
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{
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#if defined(__AVR_ATmega8__)
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bSerial.rxBuffer[bSerial.rxEnd] = UDR;
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#else
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bSerial.rxBuffer[bSerial.rxEnd] = UDR0;
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#endif
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if (bSerial.rxEnd < RX_BUFF_SIZE) bSerial.rxEnd++;
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}
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//USART Tx Complete
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#if defined(__AVR_ATmega8__)
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SIGNAL(SIG_UART_TRANS)
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#else
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SIGNAL(USART_TX_vect)
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#endif
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{
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if (bSerial.txEnd != bSerial.txBegin || bSerial.txFull != 0){
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#if defined(__AVR_ATmega8__)
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UDR = bSerial.txBuffer[bSerial.txBegin]; // Send buffer
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#else
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UDR0 = bSerial.txBuffer[bSerial.txBegin]; // Send buffer
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#endif
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bSerial.txFull = 0;
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bSerial.txBegin++;
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if (bSerial.txBegin == TX_BUFF_SIZE) bSerial.txBegin = 0;
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}
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}
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// send byte to serial or buffer if bisy
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void BuffSerial::sendByte(uint8_t data){
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if (txFull){
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txOverflow++;
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}else{
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uint8_t oldSREG = SREG;
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cli();
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#if defined(__AVR_ATmega8__)
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if (txEnd != txBegin || (UCSRA & _BV(UDRE)) == 0){
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#else
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if (txEnd != txBegin || (UCSR0A & _BV(UDRE0)) == 0){
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#endif
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txBuffer[txEnd] = data;
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txEnd++;
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if (txEnd == TX_BUFF_SIZE) txEnd = 0;
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if (txEnd == txBegin) txFull = 1; // buffer overflow
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}else{
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#if defined(__AVR_ATmega8__)
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UDR = data;
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#else
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UDR0 = data;
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#endif
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}
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SREG = oldSREG;
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}
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}
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// print string
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void BuffSerial::print(const char *pBuf){
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while (*pBuf) {
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sendByte(*pBuf++);
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}
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}
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void BuffSerial::print(const char pBuf){
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sendByte(pBuf);
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}
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// print string from flash
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void BuffSerial::print_p(const char *pBuf){
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char c;
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while ((c = pgm_read_byte_near( pBuf++ ))) {
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sendByte(c);
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}
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}
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void BuffSerial::println(const char *pBuf){
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print(pBuf);
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println();
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}
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void BuffSerial::println(const char pBuf){
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print(pBuf);
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println();
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}
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void BuffSerial::println(void){
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print("\r\n");
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}
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void BuffSerial::println_p(const char *pBuf){
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print_p(pBuf);
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println();
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}
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void BuffSerial::printHex4(uint8_t data){
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uint8_t c = data & 0x0f;
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c += c < 10 ? '0' : 'A' - 10 ;
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sendByte(c);
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}
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void BuffSerial::printHex8(uint8_t data){
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printHex4(data >> 4);
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printHex4(data);
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}
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void BuffSerial::printDec(uint8_t data){
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uint8_t buf[3];
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uint8_t i = 0;
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if (data == 0){
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sendByte('0');
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return;
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}
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while (data > 0){
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buf[i++] = data % 10;
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data /= 10;
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}
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for (; i > 0; i--)
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sendByte((buf[i - 1] < 10 ? '0' + buf[i - 1] : 'A' + buf[i - 1] - 10));
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}
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// check rx buffer not empty
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bool BuffSerial::rxEnabled(void){
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return rxEnd;
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}
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uint8_t BuffSerial::rxRead(void){
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#if defined(__AVR_ATmega8__)
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cbi(UCSRB, RXCIE); // disable RX complete interrupt
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#else
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cbi(UCSR0B, RXCIE0); // disable RX complete interrupt
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#endif
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uint8_t readkey = rxBuffer[rxBegin]; // read begin of received Buffer
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rxBegin++;
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if (rxBegin == rxEnd) rxBegin = rxEnd = 0; // if Buffer is empty reset Buffer
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#if defined(__AVR_ATmega8__)
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sbi(UCSRB, RXCIE); // enable RX complete interrupt
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#else
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sbi(UCSR0B, RXCIE0); // enable RX complete interrupt
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#endif
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return readkey;
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}
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BuffSerial bSerial;
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