Arduino 看门狗使用
1.需要调用
#include <avr/wdt.h>
2.设置看门狗复位时间
wdt_enable(WDTO_2S);
代码时间定义的底层查看
#define WDTO_15MS 0 /** \ingroup avr_watchdog See \c WDT0_15MS */ #define WDTO_30MS 1 /** \ingroup avr_watchdog See \c WDT0_15MS */ #define WDTO_60MS 2 /** \ingroup avr_watchdog See \c WDT0_15MS */ #define WDTO_120MS 3 /** \ingroup avr_watchdog See \c WDT0_15MS */ #define WDTO_250MS 4 /** \ingroup avr_watchdog See \c WDT0_15MS */ #define WDTO_500MS 5 /** \ingroup avr_watchdog See \c WDT0_15MS */ #define WDTO_1S 6 /** \ingroup avr_watchdog See \c WDT0_15MS */ #define WDTO_2S 7 if defined(__DOXYGEN__) || defined(WDP3) /** \ingroup avr_watchdog See \c WDT0_15MS Note: This is only available on the ATtiny2313, ATtiny24, ATtiny44, ATtiny84, ATtiny84A, ATtiny25, ATtiny45, ATtiny85, ATtiny261, ATtiny461, ATtiny861, ATmega48, ATmega88, ATmega168, ATmega48P, ATmega88P, ATmega168P, ATmega328P, ATmega164P, ATmega324P, ATmega644P, ATmega644, ATmega640, ATmega1280, ATmega1281, ATmega2560, ATmega2561, ATmega8HVA, ATmega16HVA, ATmega32HVB, ATmega406, ATmega1284P, ATmega256RFR2, ATmega128RFR2, ATmega64RFR2, ATmega2564RFR2, ATmega1284RFR2, ATmega644RFR2, AT90PWM1, AT90PWM2, AT90PWM2B, AT90PWM3, AT90PWM3B, AT90PWM216, AT90PWM316, AT90PWM81, AT90PWM161, AT90USB82, AT90USB162, AT90USB646, AT90USB647, AT90USB1286, AT90USB1287, ATtiny48, ATtiny88. */ #define WDTO_4S 8 /** \ingroup avr_watchdog See \c WDT0_15MS Note: This is only available on the ATtiny2313, ATtiny24, ATtiny44, ATtiny84, ATtiny84A, ATtiny25, ATtiny45, ATtiny85, ATtiny261, ATtiny461, ATtiny861, ATmega48, ATmega48A, ATmega48PA, ATmega88, ATmega168, ATmega48P, ATmega88P, ATmega168P, ATmega328P, ATmega164P, ATmega324P, ATmega644P, ATmega644, ATmega640, ATmega1280, ATmega1281, ATmega2560, ATmega2561, ATmega8HVA, ATmega16HVA, ATmega32HVB, ATmega406, ATmega1284P, ATmega256RFR2, ATmega128RFR2, ATmega64RFR2, ATmega2564RFR2, ATmega1284RFR2, ATmega644RFR2, AT90PWM1, AT90PWM2, AT90PWM2B, AT90PWM3, AT90PWM3B, AT90PWM216, AT90PWM316, AT90PWM81, AT90PWM161, AT90USB82, AT90USB162, AT90USB646, AT90USB647, AT90USB1286, AT90USB1287, ATtiny48, ATtiny88, ATxmega16a4u, ATxmega32a4u, ATxmega16c4, ATxmega32c4, ATxmega128c3, ATxmega192c3, ATxmega256c3. */ #define WDTO_8S 9
3.喂狗操作
wdt_reset();
4.关闭看门狗
wdt_disable();
测试代码:
#include <avr/wdt.h> int test = 0; void setup() { Serial.begin(9600); Serial.println("in setup"); Serial.print("test="); Serial.println(test); delay(1000); wdt_enable(WDTO_2S); } void loop() { int testLoop; test++; // wdt_reset(); Serial.println("in loop"); Serial.print("test="); Serial.println(test); delay(1000); Serial.print("testLoop="); Serial.println(testLoop++); }
![](https://files-cdn.cnblogs.com/files/Mysterious/wechat.bmp)
![](https://files-cdn.cnblogs.com/files/Mysterious/tb.bmp)
文章对您有帮助,开心可以打赏我,金额随意,欢迎来赏!
需要电子方面开发板/传感器/模块等硬件可以到我的淘宝店逛逛