MOS tube makes PIC microcontroller unable to operate normally-EEWORLD

program:

#include "led.h"

void InitLed(void)

{

TRISB &= ~0x70;

ANSELB &= ~0x70;

}

void LedBlink(void)

{

u8 i;

for(i=0;i<3;i++){

LED0 = 1;LED1 = 1;LED2 = 1;

delay_10ms(400);

LED0 = 0;LED1 = 0;LED2 = 0;

delay_10ms(400);

}

void main()

{

InitLed();

LedBlink();

while(1)

{

LED1 = !LED1;

delay_10ms(100);

}

Disconnect the MOS tube and the inductor, the microcontroller can work normally, and the indicator light flashes 3 times normally. As shown below:

When the MOS tube is connected, the microcontroller cannot work normally and the indicator light is always on. As shown in the following figure:

Reference address：MOS tube makes PIC microcontroller unable to operate normally

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Professor at Beihang University, dedicated to promoting microcontrollers and embedded systems for over 20 years.

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