NTP request results in "ServerDrv::availData: SpiDrv not available"

[deruiter]

NOTE: "insert code" does not work in this editor, I used it but to no avail...

Describe the bug

When using NOT using delay() I get the "ServerDrv::availData: SpiDrv not available" error

Steps to Reproduce

NOT use delay() after an NTP Udp request...

Expected behavior

no error?

Actual behavior

"ServerDrv::availData: SpiDrv not available" error

Debug and AT-command log (if applicable)

Serial monitor output:

11:52:13.132 -> 10:52:13 15.10.2021
11:52:14.127 -> 10:52:14 15.10.2021
11:52:15.121 -> 10:52:15 15.10.2021
11:52:16.116 -> 10:52:16 15.10.2021
11:52:17.144 -> 10:52:17 15.10.2021
11:52:18.138 -> 10:52:18 15.10.2021
11:52:19.133 -> 10:52:19 15.10.2021
11:52:20.127 -> 10:52:20 15.10.2021
11:52:21.121 -> 10:52:21 15.10.2021
11:52:22.149 -> 10:52:22 15.10.2021
11:52:23.143 -> ServerDrv::availData: SpiDrv not available
11:52:23.143 -> Transmit NTP Request
11:52:23.143 -> us.pool.ntp.org: 165.227.219.198
11:52:23.143 -> ServerDrv::availData: SpiDrv not available
11:52:23.143 -> ServerDrv::availData: SpiDrv not available
11:52:23.143 -> ServerDrv::availData: SpiDrv not available
11:52:23.143 -> ServerDrv::availData: SpiDrv not available
.
.<cut a lot of lines>
.
11:52:23.275 -> ServerDrv::availData: SpiDrv not available
11:52:23.275 -> ServerDrv::availData: SpiDrv not available
11:52:23.275 -> ServerDrv::availData: SpiDrv not available
11:52:23.275 -> Receive NTP Response
11:52:23.275 -> 10:52:23 15.10.2021   <<< 15 seconds no NTP sync!
11:52:24.270 -> 10:52:24 15.10.2021
11:52:25.264 -> 10:52:25 15.10.2021
11:52:26.259 -> 10:52:26 15.10.2021
11:52:27.287 -> 10:52:27 15.10.2021
11:52:28.281 -> 10:52:28 15.10.2021
11:52:29.276 -> 10:52:29 15.10.2021 
11:52:30.271 -> 10:52:30 15.10.2021
11:52:31.265 -> 10:52:31 15.10.2021
11:52:32.260 -> 10:52:32 15.10.2021
11:52:33.288 -> 10:52:33 15.10.2021
11:52:34.282 -> 10:52:34 15.10.2021
11:52:35.277 -> 10:52:35 15.10.2021
11:52:36.271 -> 10:52:36 15.10.2021
11:52:37.266 -> 10:52:37 15.10.2021
11:52:38.261 -> ServerDrv::availData: SpiDrv not available
11:52:38.261 -> Transmit NTP Request
11:52:38.261 -> us.pool.ntp.org: 165.227.219.198
11:52:38.261 -> ServerDrv::availData: SpiDrv not available
11:52:38.261 -> ServerDrv::availData: SpiDrv not available
etc.etc.

Screenshots

If applicable, add screenshots to help explain your problem.

Information

Please ensure to specify the following:

Arduino IDE version 1.8.16
Arduino nano 33 IoT SAMD21 board

Example

sketch to reproduce:

//
// sketch from examples of library "*Time* by *Michael Margolis*"
// LATEST version
// adapted to use with WifiNINA library LATEST VERSION


#include <TimeLib.h>
#include <SPI.h>
#include <WiFiNINA_Generic.h>
#include <WiFiUdp_Generic.h>

const char ssid[] = "**********";      //  your network SSID (name)
const char pass[] = "**********";  // your network password

// NTP Servers:
static const char ntpServerName[] = "us.pool.ntp.org";
//static const char ntpServerName[] = "time.nist.gov";
//static const char ntpServerName[] = "time-a.timefreq.bldrdoc.gov";
//static const char ntpServerName[] = "time-b.timefreq.bldrdoc.gov";
//static const char ntpServerName[] = "time-c.timefreq.bldrdoc.gov";

const int timeZone = 1;     // Central European Time
//const int timeZone = -5;  // Eastern Standard Time (USA)
//const int timeZone = -4;  // Eastern Daylight Time (USA)
//const int timeZone = -8;  // Pacific Standard Time (USA)
//const int timeZone = -7;  // Pacific Daylight Time (USA)


WiFiUDP Udp;
unsigned int localPort = 8888;  // local port to listen for UDP packets

time_t getNtpTime();
void digitalClockDisplay();
void printDigits(int digits);
void sendNTPpacket(IPAddress &address);

void setup()
{
  Serial.begin(115200);
  while (!Serial) ; // Needed for Leonardo only
  delay(250);
  Serial.println("TimeNTP Example");
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, pass);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.print("IP number assigned by DHCP is ");
  Serial.println(WiFi.localIP());
  Serial.println("Starting UDP");
  Udp.begin(localPort);
  //Serial.print("Local port: ");
  //Serial.println(Udp.localPort());
  Serial.println("waiting for sync");
  setSyncProvider(getNtpTime);
  setSyncInterval(15);
}

time_t prevDisplay = 0; // when the digital clock was displayed

void loop()
{
  if (timeStatus() != timeNotSet) {
    if (now() != prevDisplay) { //update the display only if time has changed
      prevDisplay = now();
      digitalClockDisplay();
    }
  }
}

void digitalClockDisplay()
{
  // digital clock display of the time
  Serial.print(hour());
  printDigits(minute());
  printDigits(second());
  Serial.print(" ");
  Serial.print(day());
  Serial.print(".");
  Serial.print(month());
  Serial.print(".");
  Serial.print(year());
  Serial.println();
}

void printDigits(int digits)
{
  // utility for digital clock display: prints preceding colon and leading 0
  Serial.print(":");
  if (digits < 10)
    Serial.print('0');
  Serial.print(digits);
}

/*-------- NTP code ----------*/

const int NTP_PACKET_SIZE = 48; // NTP time is in the first 48 bytes of message
byte packetBuffer[NTP_PACKET_SIZE]; //buffer to hold incoming & outgoing packets

time_t getNtpTime()
{
  IPAddress ntpServerIP; // NTP server's ip address

  while (Udp.parsePacket() > 0) ; // discard any previously received packets
  Serial.println("Transmit NTP Request");
  // get a random server from the pool
  WiFi.hostByName(ntpServerName, ntpServerIP);
  Serial.print(ntpServerName);
  Serial.print(": ");
  Serial.println(ntpServerIP);
  sendNTPpacket(ntpServerIP);
  uint32_t beginWait = millis();
  while (millis() - beginWait < 1500) {
    int size = Udp.parsePacket();
    if (size >= NTP_PACKET_SIZE) {
      Serial.println("Receive NTP Response");
      Udp.read(packetBuffer, NTP_PACKET_SIZE);  // read packet into the buffer
      unsigned long secsSince1900;
      // convert four bytes starting at location 40 to a long integer
      secsSince1900 =  (unsigned long)packetBuffer[40] << 24;
      secsSince1900 |= (unsigned long)packetBuffer[41] << 16;
      secsSince1900 |= (unsigned long)packetBuffer[42] << 8;
      secsSince1900 |= (unsigned long)packetBuffer[43];
      return secsSince1900 - 2208988800UL + timeZone * SECS_PER_HOUR;
    }
  }
  Serial.println("No NTP Response :-(");
  return 0; // return 0 if unable to get the time
}

// send an NTP request to the time server at the given address
void sendNTPpacket(IPAddress &address)
{
  // set all bytes in the buffer to 0
  memset(packetBuffer, 0, NTP_PACKET_SIZE);
  // Initialize values needed to form NTP request
  // (see URL above for details on the packets)
  packetBuffer[0] = 0b11100011;   // LI, Version, Mode
  packetBuffer[1] = 0;     // Stratum, or type of clock
  packetBuffer[2] = 6;     // Polling Interval
  packetBuffer[3] = 0xEC;  // Peer Clock Precision
  // 8 bytes of zero for Root Delay & Root Dispersion
  packetBuffer[12] = 49;
  packetBuffer[13] = 0x4E;
  packetBuffer[14] = 49;
  packetBuffer[15] = 52;
  // all NTP fields have been given values, now
  // you can send a packet requesting a timestamp:
  Udp.beginPacket(address, 123); //NTP requests are to port 123
  Udp.write(packetBuffer, NTP_PACKET_SIZE);
  Udp.endPacket();
}

[deruiter]

``