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Я работаю в aurdino mega2560 в Atmel студии 7 с Arduino загрузчиком сначала я использовал Uart 0 (Tx0 и RX0) с прерыванием, и это работает хорошо , но, когда я использовал uart1 с прерыванием из u1_rx не работаАрдино USART1 прерывания
#include <avr/io.h>
#include <util/delay.h>
#include<avr/interrupt.h>
#ifndef F_CPU
#define F_CPU 16000000UL // 16 MHz clock speed
#endif
#define USART_BAUDRATE0 115200
#define USART_BAUDRATE1 57600
#define BAUD_PRESCALE (((F_CPU/(USART_BAUDRATE0 * 16UL))) - 1)
volatile char ReceivedByte1;
void initUART(int BRR)
{//|(1 << TXCIE0)
UCSR0A=(0<<RXC0)|(0<<FE0)|(0<<DOR0)|(0<<UPE0)|(1<<U2X0)|(0<<MPCM0);
UCSR0B = (1 << RXCIE0) |(1 << UDRIE0)|(1 << RXEN0) | (1 << TXEN0)|(0<<UCSZ02)|(0<<RXB80)|(0<<TXB80);
UCSR0C =(0<<UMSEL01)|(0<<UMSEL00)|(0<<UPM00)|(0<<UPM01)|(0<<USBS0)|(1 << UCSZ00) | (1 << UCSZ01) ;
UBRR0H=(BRR >> 8);
UBRR0L=BRR;
sei() ;
}
void initUART1(int BRR)
{//|(1 << TXCIE0)
UCSR1A=(0<<RXC1)|(0<<FE1)|(0<<DOR1)|(0<<UPE1)|(1<<U2X1)|(0<<MPCM1);
UCSR1B = (1 << RXCIE1) |(1 << UDRIE1)|(1 << RXEN1) | (1 << TXEN1)|(0<<UCSZ12)|(0<<RXB81)|(0<<TXB81);
UCSR1C =(0<<UMSEL11)|(0<<UMSEL10)|(0<<UPM10)|(0<<UPM11)|(0<<USBS1)|(1 << UCSZ10) | (1 << UCSZ11) ;
UBRR1H=(BRR >> 8);
UBRR1L=BRR;
sei() ;
}
ISR(USART0_RX_vect)
{
char ReceivedByte;
//ReceivedByte = UDR0; // Fetch the received byte value into the variable "ByteReceived"
//UDR0 = ReceivedByte; // Echo back the received byte back to the computer
while ((UCSR0A & (1 << RXC0)) == 1) {}; // Do nothing until data have been received and is ready to be read from UDR
ReceivedByte = UDR0; // Fetch the received byte value into the variable "ByteReceived"
while ((UCSR0A & (1 << UDRE0)) == 1) {}; // Do nothing until UDR is ready for more data to be written to it
UDR0 = ReceivedByte; // Echo back the received byte back to the computer
}
ISR(USART1_RX_vect)
{
//while ((UCSR1A & (1 << RXC1)) == 1) {}; // Do nothing until data have been received and is ready to be read from UDR
ReceivedByte1 = UDR1; // Fetch the received byte value into the variable "ByteReceived"
PORTB=0xff;
// while ((UCSR0A & (1 << UDRE0)) == 1) {}; // Do nothing until UDR is ready for more data to be written to it
UDR0 = ReceivedByte1; // Echo back the received byte back to the computer
}
ISR(USART1_UDRE_vect)
{
}
ISR(USART0_UDRE_vect)
{
}
ISR(USART0_TX_vect)
{
}
int main(void)
{
initUART1(34);
initUART(16);//Boudratecalc);
DDRB = 0xFF;
PORTB=0x00;
while (1)
{
}
}
УАПП 1 имеет работу, когда я только тогда, когда УАПП 0 отключен –
Ваш код не симметричен. –