[参考译文] MSP430FR2000：MSP 低功耗微控制器论坛

admin

Other Parts Discussed in Thread: MSP430FR2000

请注意，本文内容源自机器翻译，可能存在语法或其它翻译错误，仅供参考。如需获取准确内容，请参阅链接中的英语原文或自行翻译。

https://e2e.ti.com/support/microcontrollers/msp-low-power-microcontrollers-group/msp430/f/msp-low-power-microcontroller-forum/1230593/msp430fr2000-msp-low-power-microcontroller-forum

器件型号：MSP430FR2000

您好！

我正在处理一个需要定时器 B 和 2端口中断的项目。在项目中、我收到如下错误。

#10099-D 程序将无法放入可用内存中，或者该段包含的调用站点需要无法为该段生成 trampoline。对齐放置在"ALL_FRAM"段大小0x316中失败。可用内存范围：lnk_msp430fr2000.cmd /编译行132 C/C++ problem

因此、我尝试了尽可能多的方法、但错误仍然存在。所以、我仔细监控了 FRAM 大小、发现在 ISR 中编辑全局变量的多行导致了问题的产生。有问题的代码如下。

#include "msp430fr2000.h"


volatile int Cpwm = 0;

int main(void){                                                //P1.1 PULSES COMING FOR FAIL SAFE      P1.3 RESET THE MICRO CONTROLLER

  P1DIR |= 0x09;  // P1.0 & P1.3 output
  PM5CTL0 &= ~LOCKLPM5;
   WDTCTL = WDTPW + WDTHOLD;
  TB0CCTL0 = CCIE;                            // CCR0 interrupt enabled
  TB0CCR0 = 40000; // 1

  TB0CTL = TBSSEL_1 + MC_1 + ID_2;                 // SMCLK, contmode

    P1DIR &= (~0x06); // Set P1.1 & P1.2 Set as Input
    P1IES |= (~0x06); // rising Edge
    P1IFG &= (~0x06); // Clear interrupt flag for P1.1 and P1.2
    P1IE |= (0x06); // Enable interrupt for P1.3
    _BIS_SR(GIE);

while(1){
   P1OUT = 0x08;

}

}

// Timer A0 interrupt  routine

#pragma vector=TIMER0_B0_VECTOR
__interrupt void Timer_B (void){


  P1OUT &= ~(0x08);                         // RESET heartbeat P1.1
  __delay_cycles(10000);
  P1OUT |= 0x08;
  __delay_cycles(100000);


 if(((P1IN && 0x04)||(P1IN && 0x06) ) && (Cpwm == 0)){
     P1OUT |= 0x01;  //Failsafe on
  }

}



#pragma vector=PORT1_VECTOR
__interrupt void Port_1(void)
{

if(P1IFG==0x02){
    TB0R = 0;
    P1IFG &= (~0x02); // HEART BEAT
    if(Cpwm==0){


       if((P1IN && 0x04)||(P1IN && 0x06) ){
                    P1OUT &= ~(0x08);                          // RESET heartbeat P1.1
                    __delay_cycles(10000);
                    P1OUT |= 0x08;
                    __delay_cycles(100000);
                                       //oooooooooooooooooooooooooooooooooooooooo
                    if((P1IN && 0x04)||(P1IN && 0x06) ){
                            P1OUT |= 0x01;  //Failsafe on
            }                                              //0000000000000000000000000000000000000000000000000000000000


        }else{
            P1OUT &= ~(0x01);  // turn off fail safe

        }

    }


    Cpwm = 0;
    TB0R = 0;

}
else if(P1IFG==0x04){
    Cpwm = Cpwm+1 ;
    P1IFG &= (~0x04);      // PWM

}


}

当我将代码全局变量更改为常量、并在 ISR 例程中对全局变量进行编辑的各行添加注释时、发现这是使用低内存构建的。代码和内存分配如下。

#include "msp430fr2000.h"


const int Cpwm = 0;

int main(void){                                                //P1.1 PULSES COMING FOR FAIL SAFE      P1.3 RESET THE MICRO CONTROLLER

  P1DIR |= 0x09;  // P1.0 & P1.3 output
  PM5CTL0 &= ~LOCKLPM5;
   WDTCTL = WDTPW + WDTHOLD;
  TB0CCTL0 = CCIE;                            // CCR0 interrupt enabled
  TB0CCR0 = 40000; // 1

  TB0CTL = TBSSEL_1 + MC_1 + ID_2;                 // SMCLK, contmode

    P1DIR &= (~0x06); // Set P1.1 & P1.2 Set as Input
    P1IES |= (~0x06); // rising Edge
    P1IFG &= (~0x06); // Clear interrupt flag for P1.1 and P1.2
    P1IE |= (0x06); // Enable interrupt for P1.3
    _BIS_SR(GIE);

while(1){
   P1OUT = 0x08;

}

}

// Timer A0 interrupt  routine

#pragma vector=TIMER0_B0_VECTOR
__interrupt void Timer_B (void){


  P1OUT &= ~(0x08);                         // RESET heartbeat P1.1
  __delay_cycles(10000);
  P1OUT |= 0x08;
  __delay_cycles(100000);


 if(((P1IN && 0x04)||(P1IN && 0x06) ) && (Cpwm == 0)){
     P1OUT |= 0x01;  //Failsafe on
  }

}



#pragma vector=PORT1_VECTOR
__interrupt void Port_1(void)
{

if(P1IFG==0x02){
    TB0R = 0;
    P1IFG &= (~0x02); // HEART BEAT
    if(Cpwm==0){


       if((P1IN && 0x04)||(P1IN && 0x06) ){
                    P1OUT &= ~(0x08);                          // RESET heartbeat P1.1
                    __delay_cycles(10000);
                    P1OUT |= 0x08;
                    __delay_cycles(100000);
                                       //oooooooooooooooooooooooooooooooooooooooo
                    if((P1IN && 0x04)||(P1IN && 0x06) ){
                            P1OUT |= 0x01;  //Failsafe on
            }                                              //0000000000000000000000000000000000000000000000000000000000


        }else{
            P1OUT &= ~(0x01);  // turn off fail safe

        }

    }


 //   Cpwm = 0;
    TB0R = 0;

}
else if(P1IFG==0x04){
  //  Cpwm = Cpwm+1 ;
    P1IFG &= (~0x04);      // PWM

}


}