Serial Port Example AVR using Crosswork AVR

[edi14_10]

does anyone have an example using serial port in avr using crosswork AVR compiler?

[zetd]

Hire is my test on Rowley Crosswork for AVR

credit is for [email protected]
http://www.holger-klabunde.de/index.html

i just mod his code and port from winavr (GNU) syntact to Rowley Crosswork for AVR (Actually GNU variant too)


hey edi14_10, try to port this library http://hubbard.engr.scu.edu/embedded/ , i have done with it


use for your reference

[preecha]

for Crosswork AVR 1.3

#define BAUD 57600    //Enable 2x speed     28800 x 2 = 57600
#define BAUDRATE FOSC/16/BAUD-1
void USART_Init(unsigned int baudrate)
{
     
    UBRRH =  (unsigned char)(baudrate>>;
    UBRRL =  (unsigned char)baudrate;
   
    // Enable 2x speed
    UCSRA = (1<<U2X_BIT);

    // Enable receiver and transmitter
    UCSRB = (1<<RXEN_BIT)|(1<<TXEN_BIT)|(1<<RXCIE_BIT);

    // Async. mode, 8N1
    UCSRC = (1 << URSEL) | (3 << UCSZ0);
}
void TxSerialPort(unsigned char data)
{
     while (!(UCSRA & (1<<UDRE_BIT)));
    UDR = data;
   
   
     
}
unsigned char RxSerialPort(void)
{
    while (!(UCSRA & (1<<RXC_BIT)));
    return UDR;
}
void main()
{
  unsigned char dat;
  USART_Init(BAUDRATE);
  while(1)
  {
     dat=RxSerialPort();
     TxSerialPort(dat);
  }
 
}

[edi14_10]

How about delay in crosswork? i didnt find delay.h. do we have to make the library by ourself?

[metal]

delay cycles should work for you