PIC16F1574 EUSART不发送

您好，我还在用PIC16F1574构建一个传感器设备，需要异步串行通信。TX通过PPS路由到端口C4，RX连接到端口C5。在我的代码中，AM使用内部寄存器16MHz使用配置寄存器和OSCOCN寄存器，并且我们完全延迟了1秒。可以使用ANSELC的模拟模式。当我们使用PIN码时，代码工作得很好，但是我们甚至连一个字符都无法传输。下面是相关代码：如果你们有想法的话，请帮助我们。



      以下为原文

    Hello,
I'm also building a  sensor device with a PIC16F1574, requiring asynchronous serial communication.
TX is routed to Port C4 through PPS, and RX is connected to Port C5.In my code iam using Internal Oscillator 16mhz using Config register and OSCCON Register, and we get a Delay of 1 sec perfectly.disable the Analog mode using ANSELC. code works fine when we use the Pin out,but we haven't been able to transmit even one character.

Here's the relevant code:#pragma config FOSC = INTOSC // Oscillator Selection Bits (ECH, External Clock, High Power Mode (4-32 MHz); device clock supplied to 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 BOREN = OFF // Brown-out Reset Enable (Brown-out Reset disabled)
#pragma config CLKOUTEN = OFF // Clock Out Enable (CLKOUT function is disabled. I/O or oscillator function on the CLKOUT pin)

// CONFIG2
#pragma config WRT = OFF // Flash Memory Self-Write Protection (Write protection off)
#pragma config PPS1WAY = OFF // PPSLOCK bit One-Way Set Enable bit (PPSLOCKED Bit Can Be Cleared & Set Repeatedly)
#pragma config PLLEN = ON // PLL Enable (4x PLL ENabled)
#pragma config STVREN = OFF // Stack Overflow/Underflow Reset Enable (Stack Overflow or Underflow will not cause a Reset)
#pragma config BORV =LO // Brown-out Reset Voltage Selection (Brown-out Reset Voltage (Vbor), low trip point selected.)
#pragma config LPBOREN = OFF // Low Power Brown-out Reset enable bit (LPBOR is disabled)
#pragma config LVP = ON







#include

#define _XTAL_FREQ 16000000

unsigned char data='a';



void main(void) {

OSCCON=0x7A;// Config the Internal Frequency to 16 mhz

TRISC=0x20;

WPUC=0X00;

ANSELC= 0X00;

RC4PPS= 0X09;
BAUDCON=0X00;
SPBRGL= 0X19;
TXSTA=0X20;
RCSTA=0X78;

PIE1 |=(1<


while(1)

{

PORTC=0X01;__delay_ms(1000); PORTC=0X00;__delay_ms(1000);



while(!PIR1bits.TXIF); //while(!TXIF);
TXREG = data;



}

}



please help us if you guys have an idea.
Thanks in advance,

0