关于串行同信！

只看该作者 · 2016-10-24 20:14

我用pic16f1825单片机按照说明书中的寄存器编了一个串行通信的程序，测试时能接收到数据，但全是乱码，这可能是什么原因引起的，程序如下。

// CONFIG1
#pragma config FOSC = INTOSC // Oscillator Selection (INTOSC oscillator: I/O function on CLKIN pin)
#pragma config WDTE = OFF    // Watchdog Timer Enable (WDT disabled)
#pragma config PWRTE = OFF    // Power-up Timer Enable (PWRT disabled)
#pragma config MCLRE = ON    // MCLR Pin Function Select (MCLR/VPP pin function is MCLR)
#pragma config CP = OFF       // Flash Program Memory Code Protection (Program memory code protection is disabled)
#pragma config CPD = OFF       // Data Memory Code Protection (Data memory code protection is disabled)
#pragma config BOREN = ON    // Brown-out Reset Enable (Brown-out Reset enabled)
#pragma config CLKOUTEN = OFF // Clock Out Enable (CLKOUT function is disabled. I/O or oscillator function on the CLKOUT pin)
#pragma config IESO = ON       // Internal/External Switchover (Internal/External Switchover mode is enabled)
#pragma config FCMEN = ON    // Fail-Safe Clock Monitor Enable (Fail-Safe Clock Monitor is enabled)

// CONFIG2
#pragma config WRT = OFF       // Flash Memory Self-Write Protection (Write protection off)
#pragma config PLLEN = ON    // PLL Enable (4x PLL enabled)
#pragma config STVREN = ON    // Stack Overflow/Underflow Reset Enable (Stack Overflow or Underflow will cause a Reset)
#pragma config BORV = LO       // Brown-out Reset Voltage Selection (Brown-out Reset Voltage (Vbor), low trip point selected.)
#pragma config LVP = ON       // Low-Voltage Programming Enable (Low-voltage programming enabled)

#include<pic.h>
#define uint unsigned int
#define uchar unsigned char
void init();
void interrupt com();
void main()
{

只看该作者 · 2016-10-24 20:15

好像有字数限制，具体程序如下
void init();
void interrupt com();
void main()
{
init();
TXREG=0X31;
while(!TRMT);
while(1);
}
void init()
{
OSCCON=0X6A; //4MHz
TRISC=0XFF;
TXSTA=0X24;
RCSTA=0X90;
//BAUDCON=0X08;
BRG16=1;
SPBRGH=0X67;
SPBRGL=0X01;
//SPBRG=0XCEO1;
GIE=1;
PEIE=1;
RCIE=1;
}
void interrupt com()
{
if(RCIE&&RCIF)
{
// RCIF=0;
TXREG=RCREG;
while(!TRMT);
}
}