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DoubleResetDetector_Generic library v1.0.0 used to reconfigure WiFi / Blynk Credentials on-the-fly


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DoubleResetDetector_Generic is a library for the Arduino AVR, Teensy, SAM-DUE, SAMD, STM32, etc. boards to enable trigger configure mode by resetting the boards twice within configurable timeout seconds.

Releases v1.0.0

  1. Support boards such as AVR, Teensy, SAM DUE, SAMD and STM32, etc.
  2. AVR Mega, Teensy, STM32 to save data in EPPROM
  3. SAMD to sve data in EEPROM-simulated FlashStorage
  4. SAM DUE to save data in DueFlashStorage

This library will help detect a double reset within a configurable time, so that an alternative start-up mode / function can be used. For example:

  1. To allow re-configuration of a device’s WiFi / Blynk credentials .
  2. To do some out-of-schedule work , such as clearing data, loading defaults, etc.

The 4-byte flag data is stored in EEPROM, FlashStorage or DueFlashStorage.

See example how to use this library in minimal example

#define DRD_GENERIC_DEBUG       true  //false

#include <DoubleResetDetector_Generic.h>

// Number of seconds after reset during which a
// subseqent reset will be considered a double reset.
#define DRD_TIMEOUT 10

// RTC Memory Address for the DoubleResetDetector to use
#define DRD_ADDRESS 0

DoubleResetDetector_Generic* drd;

#ifndef LED_BUILTIN
#define LED_BUILTIN       13         
#endif

void setup()
{
  pinMode(LED_BUILTIN, OUTPUT);

  Serial.begin(115200);
  while (!Serial);
  
  Serial.println();
  Serial.println("DoubleResetDetector Example Program");
  Serial.println("-----------------------------------");

  drd = new DoubleResetDetector_Generic(DRD_TIMEOUT, DRD_ADDRESS);
  
  if (drd->detectDoubleReset()) {
    Serial.println("Double Reset Detected");
    digitalWrite(LED_BUILTIN, LOW);
  } else {
    Serial.println("No Double Reset Detected");
    digitalWrite(LED_BUILTIN, HIGH);
  }
}

void loop()
{
  // Call the double reset detector loop method every so often,
  // so that it can recognise when the timeout expires.
  // You can also call drd.stop() when you wish to no longer
  // consider the next reset as a double reset.
  drd->loop();
}