Good for all.
I am doing a project that sends data over the Internet using an ethernet shield and then process this data on computer. Arduino is running 24 hours a day and for this reason I want to implement a watchdog but the problem that the maximum time that can be included in the watchdog is 8 seconds.
The question is if there is any way to increase this time.
Thanks, I hope you help me.
The question is if there is any way to increase this time.
No, but you can count how many times the watchdog timer has fired.
But, why would you need to? The idea is to make sure, each time it fires, that whatever it is watching is working properly.
The problem I have is as follows:
On a computer running labview and I have every time you make a connection via ethernet with arduino takes about 20 seconds.
I want to avoid problems exist in the system and put a watchdog to reset arduino
I want to avoid problems exist in the system and put a watchdog to reset arduino
Every time the watchdog timer fires?
I want the watchdog is activated every 30 seconds
I want the watchdog is activated every 30 seconds
Or, you could do something every 4th time...
This is a schematic sketch of what my program. In the loop I'm calling each function to do its particular task but lab_eth function takes 20 to 30 seconds,
/************ LIBRERIAS *************/
#include <avr/wdt.h> //
#include ........................
#include ........................
#include ........................
#include ........................
/********************* DEFINE ******************************/
#define ........................
#define ........................
#define ........................
#define ........................
/********************* VARIABLE ******************************/
char ..........
int .................
/************** SETUP *************************/
void setup()
{
wdt_disable();
Serial.begin(9600);// Velocidad de comunicacion con el monitor
Serial1.begin(9600);// Velocidad de comunicacion por RS485
Wire.begin();
RTC.begin();
if (! RTC.isrunning()){
Serial.println("RTC No Conectado");
}
pinMode(SS_SD_CARD, OUTPUT);
pinMode(SS_ETHERNET, OUTPUT);
pinMode(53, OUTPUT);
digitalWrite(SS_SD_CARD, HIGH); // SD Card not active
digitalWrite(SS_ETHERNET, HIGH);// Ethernet not active
SD.begin(SS_SD_CARD);
Ethernet.begin(mac, ip);//Inicializacion protocolo TCP/IP
labview.begin();// Inicia la comunicacion del servidor
// wdt_enable(WDTO_8S);
}
/*****************************************************************
* *
* PROGRAMA PRINCIPAL *
* *
****************************************************************/
void loop() {
// wdt_reset();
temp ();
debug();
delay(10);
placa_p ();
delay(100);
placa_f ();
delay(10);
card();
delay(10);
lab_eth ();//This function takes 20 to 30 seconds
}
void lab_eth ()
{
digitalWrite(SS_ETHERNET, LOW); // Ethernet ACTIVE
if (digitalRead(SS_ETHERNET) == HIGH){
Serial.println ("ETHERNET NOT ACTIVE");
}
else {
Serial.println ("ETHERNET ACTIVE");
}
EthernetClient clv = labview.available();
if (clv) { //El cliente esta conectado
while (clv.connected()) { //El cliente sigue conectado
if (clv.available()) { // Si el cliente envia datos lo alamaceno
char b = clv.read();
// Envio al cliente la informacion de los sensores DS18B20 y RS485
if (b = 'B'){
clv.print("DS1");
clv.println(DS1);
clv.print("DS2");
clv.println(sensors.getTempC(DS_2));
clv.print("DS3");
clv.println(sensors.getTempC(DS_3));
clv.print("DS4");
clv.println(sensors.getTempC(DS_4));
clv.print("DS5");
clv.println(sensors.getTempC(DS_5));
clv.print("DS6");
clv.println(sensors.getTempC(DS_6));
// clv.print("RS485_1");
// clv.print(hum_p);
// clv.print("\t");
// clv.println(temp_p);
// clv.print("RS485_2");
// clv.print(hum_f);
// clv.print("\t");
// clv.println(temp_f);
}
}//Si el cliente no envia datos acaba la conexion
delay(1);//Retardo de 1 milisegundos
}//Cliente desconectado
clv.stop();// Termina la conexion con el cliente
}// Fin de conxion del servidor con el cliente
else {
clv.stop();
}
digitalWrite(SS_ETHERNET, HIGH); // Ethernet Not Active
if (digitalRead(SS_ETHERNET) == HIGH){
Serial.println ("ETHERNET NOT ACTIVE");
}
else {
Serial.println ("ETHERNET ACTIVE");
}
}
This is a schematic sketch of what my program. In the loop I'm calling each function to do its particular task but lab_eth function takes 20 to 30 seconds,
So, if the wdt_ stuff wasn't commented out, how would that make lab_eth() faster?
What, exactly, do you want to have happen when the watchdog wakes up?
I understand that when the watchdog timer reaches zero restarted the system.
So when the timer reaches zero is that the system is blocked at some point and I want to restart the system starting again