P.begin() appears to cause continual reboots on Wemos D1 Mini ESP8266 after MD_Parola P = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);

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Subject of the issue

~Building an internet "always right" clock project. ~Experienced weird board issues with resets, not uploading etc. ~Troubleshoot for a couple of days and have found that board resets continually if I attempt to begin an instance of MD_Parola using P.begin() after MD_Parola P = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES); ~If I comment out just that line, the sketch works as expected

Your Environment

Library Version: 3.0.2 Arduino IDE version: 1.8.5 Hardware model/type: Wemos D1 Mini v3 (almost certainly a Chinese clone) OS and Version: Microsoft Windows [Version 10.0.17134.648]

Steps to Reproduce

Uncomment line 36 in the code below being //P.begin();

Expected Behaviour

The sketch should run. The sketch runs with line 36 commented out.

Actual Behaviour

Continual resetting of board every ~8 seconds e.g. Serial output as follows. boot mode 3 means "software reset" https://arduino-esp8266.readthedocs.io/en/latest/boards.html#rst-cause

 ets Jan  8 2013,rst cause:4, boot mode:(3,6)

wdt reset
load 0x4010f000, len 1384, room 16 
tail 8
chksum 0x2d
csum 0x2d
v951aeffa
~ld

 ets Jan  8 2013,rst cause:4, boot mode:(3,6)

wdt reset
load 0x4010f000, len 1384, room 16 
tail 8
chksum 0x2d
csum 0x2d
v951aeffa
~ld

Code Demonstrating the Issue

#include <SPI.h>
#include <ezTime.h>
#include <ESP8266WiFi.h>          // Replace with WiFi.h for ESP32
#include <ESP8266WebServer.h>     // Replace with WebServer.h for ESP32
#include <AutoConnect.h>
#include <MD_Parola.h>
//#include <MD_MAX72xx.h>

#define HARDWARE_TYPE MD_MAX72XX::ICSTATION_HW
#define MAX_DEVICES 4
//#define CLK_PIN   5
//#define DATA_PIN  6
#define CS_PIN    7

MD_Parola P = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);
//MD_Parola P = MD_Parola(HARDWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);

ESP8266WebServer Server;          // Replace with WebServer for ESP32
AutoConnect Portal(Server);

void rootPage() {
  char content[] = "Hello, world ... browse to http://<ip addres>/_ac to configure AP, SSID, password etc. settings";
  Server.send(200, "text/plain", content);
}

void setup() {

  // Open serial communications and wait for port to open:
  Serial.begin(115200);

  // wait for serial port to connect. Needed for native USB port only
  //while (!Serial) {
  //  ;
  //}

  //P.begin();
  //P.print("Hello!");

  // Set ezTime debug level as required [https://github.com/ropg/ezTime#setdebug]
  setDebug(DEBUG);

  //Beging Debug Output
  Serial.println(">>");
  Serial.println();
  Serial.println();
  Serial.println();
  Serial.println("----Debug Begins--------------------------------------------");
  Serial.println();

  // Enable Autoconnect portal and if successful, output Ip to debug
  Server.on("/", rootPage);
  if (Portal.begin()) {
    Serial.println("WiFi connected: " + WiFi.localIP().toString());
  }

  // We're now online

  // Wait for ezTime to get its time synchronized and wait 5 seconds
  waitForSync();
  delay(5000);

  // Create a timezone called myTZ
  Timezone myTZ;

  // Output UTC
  Serial.println();
  Serial.println("<ezTime> UTC: " + UTC.dateTime());
  Serial.println();

  //Set myTZ's location and outpit the result
  myTZ.setLocation(F("Africa/Johannesburg"));
  Serial.print(F("<ezTime> myTZ: "));
  Serial.println(myTZ.dateTime());
  Serial.println(myTZ.getTimezoneName());
  Serial.println(myTZ.getOlson());

  //Set NTP update frequency in seconds
  setInterval(60); //[https://github.com/ropg/ezTime#setserver-and-setinterval]
}

void loop() {
  //P.print(millis()/1000);
  //Handle the Autoconnect client
  Portal.handleClient();

  //Handle the ezTmine events //[https://github.com/ropg/ezTime#events]
  events();
}

MajicDesigns / MD_Parola