我有ATMEL的两个串口例程，要转到STC的实验板上晶振18.432
而例程是11.0592，,波特率改成9600，我对寄存器不太熟悉
那位兄弟能改一下，函数的功能是串口把接收到的字符再发回去
DEMO1:
include "reg_c51.h"
char uart_data;
void main (void)
{
SCON = 0x50; /* uart in mode 1 (8 bit), REN=1 */
BDRCON &=0xEC; /* BRR=0; SRC=0; */
BDRCON |=0x0C; /* TBCK=1;RBCK=1; SPD=0 */
BRL=0xFD; /* 9600 Bds at 11.059MHz */
ES = 1; /* Enable serial interrupt */
EA = 1; /* Enable global interrupt */
BDRCON |=0x10; /* Baud rate generator run*/
while(1); /* endless */
}
void serial_IT(void) interrupt 4
{
if (RI == 1)
{ /* if reception occur */
RI = 0; /* clear reception flag for next reception */
uart_data = SBUF; /* Read receive data */
SBUF = uart_data; /* Send back same data on uart*/
}
else TI = 0; /* if emission occur */
/* clear emission flag for next emission*/
}
//////////////////////////////////////////////////////////////////////
DEMO2:
#include "reg_c51.h"
char uart_data;
/void main (void)
{
SCON = 0x50; /*uart in mode 1 (8 bit), REN=1 */
T2CON &= 0xF0; /* EXEN2=0; TR2=0;C/T2#=0;CP/RL2#=0;*/
T2CON |= 0x30; /* RCLK = 1; TCLK=1; */
TH2=0xFF; /* init value */
TL2=0xFD; /* init value */
RCAP2H=0xFF; /* reload value, 115200 Bds at11.059MHz */
RCAP2L=0xFD; /* reload value, 115200 Bds at 11.059MHz */
ES = 1; /* Enable serial interrupt */
EA = 1; /* Enable global interrupt */
TR2 = 1; /* Timer 2 run */
while(1); /* endless */
}
void serial_IT(void) interrupt 4
{
if (RI == 1)
{ /* if reception occur */
RI = 0; /* clear reception flag for next reception */
uart_data = SBUF; /* Read receive data */
SBUF = uart_data; /* Send back same data on uart*/
}
else TI = 0; /* if emission occur */
/* clear emission flag for next emission*/
}
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楼主
