XC8 中断配置

Question

我正在尝试为 pic16f887 编写定时器中断。我检查了几个网站，其中大多数都建议将中断子程序编写为

void 中断名称（void）

但是我的程序说这样做我的中断名称与 Isr 冲突。 main.c:42: error: (1375) 为只有一个中断向量的设备定义了多个中断函数（_led 和 _isr）

这是我的代码示例。

/******************************************************************************/
/* Files to Include                                                           */
/******************************************************************************/

#define _XTAL_FREQ 4000000

#include <xc.h>
#include <stdint.h>        /* For uint8_t definition */
#include <stdbool.h>       /* For true/false definition */
#include <htc.h>

#include "system.h"        /* System funct/params, like osc/peripheral config */
#include "user.h"          /* User funct/params, such as InitApp */
#include "pic16f887.h"
/******************************************************************************/
/* User Global Variable Declaration                                           */
/******************************************************************************/

/* i.e. uint8_t <variable_name>; */

/******************************************************************************/
/* Main Program                                                               */
/******************************************************************************/
// CONFIG1
#pragma config FOSC = INTRC_CLKOUT// Oscillator Selection bits (INTOSC oscillator: CLKOUT function on RA6/OSC2/CLKOUT pin, I/O function on RA7/OSC1/CLKIN)
#pragma config WDTE = OFF       // Watchdog Timer Enable bit (WDT disabled and can be enabled by SWDTEN bit of the WDTCON register)
#pragma config PWRTE = OFF      // Power-up Timer Enable bit (PWRT disabled)
#pragma config MCLRE = OFF      // RE3/MCLR pin function select bit (RE3/MCLR pin function is digital input, MCLR internally tied to VDD)
#pragma config CP = OFF         // Code Protection bit (Program memory code protection is disabled)
#pragma config CPD = OFF        // Data Code Protection bit (Data memory code protection is disabled)
#pragma config BOREN = ON       // Brown Out Reset Selection bits (BOR enabled)
#pragma config IESO = OFF       // Internal External Switchover bit (Internal/External Switchover mode is disabled)
#pragma config FCMEN = OFF      // Fail-Safe Clock Monitor Enabled bit (Fail-Safe Clock Monitor is disabled)
#pragma config LVP = OFF        // Low Voltage Programming Enable bit (RB3 pin has digital I/O, HV on MCLR must be used for programming)

// CONFIG2
#pragma config BOR4V = BOR40V   // Brown-out Reset Selection bit (Brown-out Reset set to 4.0V)
#pragma config WRT = OFF        // Flash Program Memory Self Write Enable bits (Write protection off)

void interrupt led(void)


{
    PORTA = 0X00;`enter code here`

}


void main(void)
{  
   OSCCON = 0b01110000;

    TRISA = 0X00;
    ANSEL = 0X00;
    ANSELH = 0X00;

    while(1)
    {
        PORTA = 0X03;
        __delay_ms(1000);
        PORTA = 0X01;
        __delay_ms(1000);


    }

}

Answer 1

如果您有 xc8 2.0 及更高版本，您的 ISR 应该如下所示：

#include <xc.h>

....
void __interrupt() ISR(void)    
{
...... // do Interrupt stuff
}