Example of communication between ATMEGA48's USART serial port and PC-EEWORLD

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/********************************************************
CodeWizardAVR
http://www.avrdiy.com
Chip type : ATmega48V
Clock frequency : 7.372800 MHz
Memory model : Small
External SRAM size : 0
Data Stack size : 128
Baud rate 9600/8 data bits/1 stop bit/no parity
M8V20 experiment board hardware settings
1: Short the 2 jumper caps of J5, use external crystal oscillator 7.3728MHz
2: Short the 4 jumper caps of J6 and J7, use MAX232, and leave other jumpers open
3: Connect the DB9 interface to the computer.
Please use the serial debugging software SSCOM32 or comdebug for debugging*/

#include
#include
#include

void main(void)
{
UCSR0B=0x18; //The following are 3 statements for serial port initialization
UCSR0C=0x06;
UBRR0L=0x2F;
while(1) //loop
{
unsigned char data; //define a local variable
data=getchar(); //wait until a data is received
putchar(data); //send the received data
}
} //end

Keywords：ATMEGA48 USART Reference address：Example of communication between ATMEGA48's USART serial port and PC

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