无法 运行 代码中的中断函数不起作用

Question

这部分代码有问题：void interrupt ISR_Timer0_Int

mplabs x ide 5.10 显示错误：

newmain.c:26:6: error: variable has incomplete type 'void'
newmain.c:26:15: error: expected ';' after top level declarator

我正在使用 XC8 V2 编译器，它将进入 PIC18f4550

代码：

void interrupt ISR_Timer0_Int()  // Timer0 Interrupt Service Routine (ISR)
{
    if (INTCONbits.TMR0IF) // TMR0IF:- Timer0 Overflow Interrupt Flag Bit
        // 1 = TMR0 reg has overflowed
        // 0 = TMR0 reg has not overflowed
    {
        TMR0H = 0xED; // Timer0 start value = 0x48E5 for 0.1 second
        TMR0L = 0x4C;
        if (j <= 7) { //limit up to 7

            j++; // Increase count by 1
            PORTD = j; // Output to Demultiplexer

        }
        else {

            j = 0; // Reset count aftwr it hit 7
            PORTD = j; // Output to Demultiplexer

        }
        INTCONbits.TMR0IF = 0; // Reset TMR0IF to "0" since the end of
        // the interrupt function has been reached
    }
}

Answer 1

新编译器的语法发生了变化。有关此内容和 link 文档的更多信息，请参见此处 https://www.microforum.cc/topic/5-i-used-to-use-to-locate-variables-but-since-xc8-20-this-is-no-longer-working/

您可以通过将编译器设置回 C90 模式或通过 使用新的中断语法。