RP2040 Arduino framework: conflicts with TimeLib.h

lhm0 · August 18, 2024, 6:25pm

Dear all,

I am trying to move code from ESP8266 to RP2040, both within Arduino framework. Currently, I am struggling with the time functionality - I need to sync time with NTP.

Strangely enough, my code did work initially. But after a while, platformIO did not compile the code anymore and reported conflicts on time variables. I am not aware of any changes that I made.

Do you have any idea, what is going on? I am lost.

Here is my platform.ini:

[env]
platform = raspberrypi
framework = arduino
board_build.core = earlephilhower
monitor_speed = 115200

[env:rpipicow]
board = rpipicow
lib_deps = 
    https://github.com/PaulStoffregen/Time
;    https://github.com/JChristensen/Timezone

This is my Code:



#include <Arduino.h>
#include <WiFi.h>
#include "pico/cyw43_arch.h"

#include <TimeLib.h>
// #include <Timezone.h>

char ssid[] = "ssid";             // your network SSID (name)
char pass[] = "1234567";         // your network password

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


/*-------- NTP code ----------*/
// A UDP instance to let us send and receive packets over UDP
WiFiUDP Udp;


// NTP Servers:
char timeServer[]         = "time.nist.gov";  // NTP server
unsigned int localPort    = 2390;             // local port to listen for UDP packets

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

const int timeZone = 1;     // Central European Time

// send an NTP request to the time server at the given address
void sendNTPpacket(char *ntpSrv) {

  // 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(ntpSrv, 123); //NTP requests are to port 123
  Udp.write(packetBuffer, NTP_PACKET_SIZE);
  Udp.endPacket();
}

time_t getNtpTime()
{
  while (Udp.parsePacket() > 0) ; // discard any previously received packets
  Serial.println("Transmit NTP Request");
  sendNTPpacket(timeServer);
  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
}

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);
}

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

void setup()
{
  Serial.begin(115200);
  while (!Serial && millis() < 5000);

  delay(200);

  ///////////////////////////////////

  // check for the WiFi module:
  if (WiFi.status() == WL_NO_MODULE)
  {
    Serial.println("Communication with WiFi module failed!");
    // don't continue
    while (true);
  }

  Serial.print(F("Connecting to SSID: "));
  Serial.println(ssid);

  int status = WiFi.begin(ssid, pass);

  delay(1000);
   
  // attempt to connect to WiFi network
  while ( status != WL_CONNECTED)
  {
    delay(500);
        
    // Connect to WPA/WPA2 network
    status = WiFi.status();
  }

  // you're connected now, so print out the data
  Serial.print(F("You're connected to the network, IP = "));
  Serial.println(WiFi.localIP());

  ///////////////////////////////////
  delay(250);
  Udp.begin(localPort);
  Serial.println("waiting for sync");
  setSyncProvider(getNtpTime);
}

void loop()
{
///////////////////////////////////
/*
time_t eastern;
TimeChangeRule usEDT = {"EDT", Second, Sun, Mar, 2, -240};  //UTC - 4 hours
TimeChangeRule usEST = {"EST", First, Sun, Nov, 2, -300};   //UTC - 5 hours
Timezone usEastern(usEDT, usEST);
*/
///////////////////////////////////

if (timeStatus() != timeNotSet) {
    if (now() != prevDisplay) { //update the display only if time has changed
      prevDisplay = now();
//      time_t eastern = usEastern.toLocal(now());
      digitalClockDisplay(now());  
    }
  }
}

And finally the error log:

Processing rpipicow (board: rpipicow; platform: raspberrypi; framework: arduino)
-------------------------------------------------------------------------------------------------------------------
Verbose mode can be enabled via `-v, --verbose` option
CONFIGURATION: https://docs.platformio.org/page/boards/raspberrypi/rpipicow.html
PLATFORM: Raspberry Pi RP2040 (1.9.0+sha.ffb6889) > Pico W
HARDWARE: RP2040 133MHz, 264KB RAM, 2MB Flash
DEBUG: Current (blackmagic) External (blackmagic, cmsis-dap, jlink, pico-debug, picoprobe, raspberrypi-swd)
PACKAGES: 
 - framework-arduinopico @ 1.30600.0+sha.41b0686 
 - tool-rp2040tools @ 1.0.2 
 - toolchain-rp2040-earlephilhower @ 5.120300.230911 (12.3.0)
Flash size: 2.00MB
Sketch size: 2.00MB
Filesystem size: 0.00MB
Maximium Sketch size: 2093056 EEPROM start: 0x101ff000 Filesystem start: 0x101ff000 Filesystem end: 0x101ff000
LDF: Library Dependency Finder -> https://bit.ly/configure-pio-ldf
LDF Modes: Finder ~ chain, Compatibility ~ soft
Found 53 compatible libraries
Scanning dependencies...
Dependency Graph
|-- Time @ 1.6.1+sha.a18e50d
|-- WiFi @ 1.0.0
Building in release mode
Compiling .pio/build/rpipicow/src/main.cpp.o
Compiling .pio/build/rpipicow/libf0a/LittleFS/LittleFS.cpp.o
Compiling .pio/build/rpipicow/lib584/PicoOTA/PicoOTA.cpp.o
Compiling .pio/build/rpipicow/libae9/Updater/Updater.cpp.o
Compiling .pio/build/rpipicow/libe8f/WiFi/BearSSLHelpers.cpp.o
Compiling .pio/build/rpipicow/libe8f/WiFi/CertStoreBearSSL.cpp.o
Compiling .pio/build/rpipicow/libe8f/WiFi/WiFiClass.cpp.o
Compiling .pio/build/rpipicow/libe8f/WiFi/WiFiClient.cpp.o
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/LittleFS/src/LittleFS.h:29,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/LittleFS/src/LittleFS.cpp:26:
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h: In static member function 'static time_t fs::FS::_defaultTimeCB()':
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:243:16: error: 'time' was not declared in this scope
  243 |         return time(nullptr);
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:26:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
   25 | #include <../include/time.h> // See issue #6714
  +++ |+#include <ctime>
   26 | 
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/LittleFS/src/LittleFS.h:29,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/PicoOTA/src/PicoOTA.h:22,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/PicoOTA/src/PicoOTA.cpp:20:
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h: In static member function 'static time_t fs::FS::_defaultTimeCB()':
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:243:16: error: 'time' was not declared in this scope
  243 |         return time(nullptr);
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:26:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
   25 | #include <../include/time.h> // See issue #6714
  +++ |+#include <ctime>
   26 | 
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/Updater/src/Updater.h:26,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/Updater/src/Updater.cpp:21:
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h: In static member function 'static time_t fs::FS::_defaultTimeCB()':
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:243:16: error: 'time' was not declared in this scope
  243 |         return time(nullptr);
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:26:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
   25 | #include <../include/time.h> // See issue #6714
  +++ |+#include <ctime>
   26 | 
*** [.pio/build/rpipicow/lib584/PicoOTA/PicoOTA.cpp.o] Error 1
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/Updater/src/Updater.h:26,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/BearSSLHelpers.h:27,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/CertStoreBearSSL.h:23,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/CertStoreBearSSL.cpp:20:
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h: In static member function 'static time_t fs::FS::_defaultTimeCB()':
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:243:16: error: 'time' was not declared in this scope
  243 |         return time(nullptr);
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:26:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
   25 | #include <../include/time.h> // See issue #6714
  +++ |+#include <ctime>
   26 | 
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/Updater/src/Updater.h:26,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/BearSSLHelpers.h:27,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiClientSecureBearSSL.h:30,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiClientSecure.h:24,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFi.h:9,
                 from src/main.cpp:4:
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h: In static member function 'static time_t fs::FS::_defaultTimeCB()':
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:243:16: error: 'time' was not declared in this scope
  243 |         return time(nullptr);
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:26:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
   25 | #include <../include/time.h> // See issue #6714
  +++ |+#include <ctime>
   26 | 
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/Updater/src/Updater.h:26,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/BearSSLHelpers.h:27,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/BearSSLHelpers.cpp:23:
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h: In static member function 'static time_t fs::FS::_defaultTimeCB()':
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:243:16: error: 'time' was not declared in this scope
  243 |         return time(nullptr);
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:26:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
   25 | #include <../include/time.h> // See issue #6714
  +++ |+#include <ctime>
   26 | 
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFi.h:15:
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h: In member function 'bool NTPClass::waitSet(void (*)(), uint32_t)':
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:88:17: error: 'time' was not declared in this scope
   88 |         while ((time(nullptr) < 10000000) && (millis() - start < timeout)) {
      |                 ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:1:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
  +++ |+#include <ctime>
    1 | /*
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:94:16: error: 'time' was not declared in this scope
   94 |         return time(nullptr) < 10000000;
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:94:16: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
*** [.pio/build/rpipicow/libae9/Updater/Updater.cpp.o] Error 1
*** [.pio/build/rpipicow/libf0a/LittleFS/LittleFS.cpp.o] Error 1
*** [.pio/build/rpipicow/libe8f/WiFi/CertStoreBearSSL.cpp.o] Error 1
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/Updater/src/Updater.h:26,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/BearSSLHelpers.h:27,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiClientSecureBearSSL.h:30,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiClientSecure.h:24,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFi.h:9,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiClient.cpp:23:
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h: In static member function 'static time_t fs::FS::_defaultTimeCB()':
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:243:16: error: 'time' was not declared in this scope
  243 |         return time(nullptr);
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:26:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
   25 | #include <../include/time.h> // See issue #6714
  +++ |+#include <ctime>
   26 | 
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/Updater/src/Updater.h:26,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/BearSSLHelpers.h:27,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiClientSecureBearSSL.h:30,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiClientSecure.h:24,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFi.h:9,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiClass.cpp:30:
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h: In static member function 'static time_t fs::FS::_defaultTimeCB()':
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:243:16: error: 'time' was not declared in this scope
  243 |         return time(nullptr);
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:26:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
   25 | #include <../include/time.h> // See issue #6714
  +++ |+#include <ctime>
   26 | 
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFi.h:15:
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h: In member function 'bool NTPClass::waitSet(void (*)(), uint32_t)':
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:88:17: error: 'time' was not declared in this scope
   88 |         while ((time(nullptr) < 10000000) && (millis() - start < timeout)) {
      |                 ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:1:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
  +++ |+#include <ctime>
    1 | /*
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:94:16: error: 'time' was not declared in this scope
   94 |         return time(nullptr) < 10000000;
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:94:16: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
*** [.pio/build/rpipicow/src/main.cpp.o] Error 1
*** [.pio/build/rpipicow/libe8f/WiFi/BearSSLHelpers.cpp.o] Error 1
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFi.h:15:
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h: In member function 'bool NTPClass::waitSet(void (*)(), uint32_t)':
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:88:17: error: 'time' was not declared in this scope
   88 |         while ((time(nullptr) < 10000000) && (millis() - start < timeout)) {
      |                 ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:1:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
  +++ |+#include <ctime>
    1 | /*
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:94:16: error: 'time' was not declared in this scope
   94 |         return time(nullptr) < 10000000;
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:94:16: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
*** [.pio/build/rpipicow/libe8f/WiFi/WiFiClient.cpp.o] Error 1
*** [.pio/build/rpipicow/libe8f/WiFi/WiFiClass.cpp.o] Error 1
=========================================== [FAILED] Took 2.09 seconds ===========================================

maxgerhardt · August 18, 2024, 6:34pm

Using this library opens up a whole can of worms since it provides Time.h which on Windows is the same as time.h (no case sensitivity in the filesystem). Either you fork that library and remove the Time.h header and lib_deps reference that, or you use a different library such as https://github.com/arduino-libraries/NTPClient which is not dependent on PaulStoffregen/Time.

maxgerhardt · August 18, 2024, 6:35pm

Hold up. Arduino-Pico already has WiFiNTP.h build in. Even with ESP8266 compatible configTime() function. Why not use that?

https://github.com/earlephilhower/arduino-pico/blob/f45db86cc2d0d0392ca8745a7adda698f7c7982b/libraries/WiFi/src/WiFiNTP.h#L26

github.com

earlephilhower/arduino-pico/blob/f45db86cc2d0d0392ca8745a7adda698f7c7982b/docs/wifintp.rst#L15


      
          required for secure connections because the certificates used have valid
          date stamps.
          
          After ``WiFi.begin()`` use ``NTP.begin(s1)`` or ``NTP.begin(s1, s2)``  to
          use one or two NTP servers (common ones are ``pool.ntp.org`` and
          ``time.nist.gov``) .
          
          .. code :: cpp
          
              WiFi.begin("ssid", "pass");
              NTP.begin("pool.ntp.org", "time.nist.gov");
          
          Either names or ``IPAddress`` may be used to identify the NTP server to
          use.
          
          It may take seconds to minutes for the system time to be updated by NTP,
          depending on the server.  It is often useful to check that ``time(NULL)``
          returns a sane value before continuing a sketch:
          
          .. code :: cpp

lhm0 · August 18, 2024, 8:22pm

Dear Max,

first of all, thank you so much for the prompt reply and the excellent hint.

Unfortunately, I still get the same strange error message. Here is my new config and code.

Your feedback would be highly appreciated.

Best regards

Ludwin

[env]
platform = raspberrypi
framework = arduino
board_build.core = earlephilhower
monitor_speed = 115200

[env:rpipicow]
board = rpipicow
lib_deps =

My Code:


#include <Arduino.h>
#include <WiFi.h>
#include "pico/cyw43_arch.h"
#include <time.h>


char ssid[] = "ssid";             // your network SSID (name)
char pass[] = "12345678";         // your network password


void setup()
{
  Serial.begin(115200);
  while (!Serial && millis() < 5000);

  delay(200);

  ///////////////////////////////////

  // check for the WiFi module:
  if (WiFi.status() == WL_NO_MODULE)
  {
    Serial.println("Communication with WiFi module failed!");
    // don't continue
    while (true);
  }

  Serial.print(F("Connecting to SSID: "));
  Serial.println(ssid);

  int status = WiFi.begin(ssid, pass);

  delay(1000);
   
  // attempt to connect to WiFi network
  while ( status != WL_CONNECTED)
  {
    delay(500);
        
    // Connect to WPA/WPA2 network
    status = WiFi.status();
  }

  // you're connected now, so print out the data
  Serial.print(F("You're connected to the network, IP = "));
  Serial.println(WiFi.localIP());

  NTP.begin("pool.ntp.org", "time.nist.gov");

  char timeZone[] = "CET-1CEST,M3.5.0/02,M10.5.0/03";
  configTime(10000, timeZone, "pool.ntp.org", "time.nist.gov");

}

void loop()
{
  time_t now;                    // this is a time stamp
  tm tm1;                        // time info sturcture
  
  utctime(&now);                 // read the current time stamp
  tm1 = *localtime(&now);

  int Hour = tm1.tm_hour;
  int Min = tm1.tm_min;
  int Sec = tm1.tm_sec;
  int Mday = tm1.tm_mday;
  int Mon = tm1.tm_mon + 1;
  int Year = tm1.tm_year + 1900;
  int Wday = tm1.tm_wday;

  Serial.printf("%d:%d:%d   %d.%d.%d\n", Hour, Min, Sec, Mday, Mon, Year );
  delay(1000);

  }

and the error message:

Processing rpipicow (board: rpipicow; platform: raspberrypi; framework: arduino)
-------------------------------------------------------------------------------------------------------------------
Verbose mode can be enabled via `-v, --verbose` option
CONFIGURATION: https://docs.platformio.org/page/boards/raspberrypi/rpipicow.html
PLATFORM: Raspberry Pi RP2040 (1.9.0+sha.ffb6889) > Pico W
HARDWARE: RP2040 133MHz, 264KB RAM, 2MB Flash
DEBUG: Current (blackmagic) External (blackmagic, cmsis-dap, jlink, pico-debug, picoprobe, raspberrypi-swd)
PACKAGES: 
 - framework-arduinopico @ 1.30600.0+sha.41b0686 
 - tool-mklittlefs-rp2040-earlephilhower @ 5.100300.230216 (10.3.0) 
 - tool-openocd-rp2040-earlephilhower @ 5.120300.230911 (12.3.0) 
 - tool-rp2040tools @ 1.0.2 
 - toolchain-rp2040-earlephilhower @ 5.120300.230911 (12.3.0)
Flash size: 2.00MB
Sketch size: 2.00MB
Filesystem size: 0.00MB
Maximium Sketch size: 2093056 EEPROM start: 0x101ff000 Filesystem start: 0x101ff000 Filesystem end: 0x101ff000
LDF: Library Dependency Finder -> https://bit.ly/configure-pio-ldf
LDF Modes: Finder ~ chain, Compatibility ~ soft
Found 53 compatible libraries
Scanning dependencies...
Dependency Graph
|-- WiFi @ 1.0.0
|-- Time @ 1.6.1+sha.a18e50d
Building in release mode
Compiling .pio/build/rpipicow/src/main.cpp.o
Compiling .pio/build/rpipicow/src/main_erster Versuch.cpp.o
Compiling .pio/build/rpipicow/libf0a/LittleFS/LittleFS.cpp.o
Compiling .pio/build/rpipicow/lib584/PicoOTA/PicoOTA.cpp.o
Compiling .pio/build/rpipicow/libae9/Updater/Updater.cpp.o
Compiling .pio/build/rpipicow/libe8f/WiFi/BearSSLHelpers.cpp.o
Compiling .pio/build/rpipicow/libe8f/WiFi/CertStoreBearSSL.cpp.o
Compiling .pio/build/rpipicow/libe8f/WiFi/WiFiClass.cpp.o
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/LittleFS/src/LittleFS.h:29,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/PicoOTA/src/PicoOTA.h:22,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/PicoOTA/src/PicoOTA.cpp:20:
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h: In static member function 'static time_t fs::FS::_defaultTimeCB()':
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:243:16: error: 'time' was not declared in this scope
  243 |         return time(nullptr);
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:26:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
   25 | #include <../include/time.h> // See issue #6714
  +++ |+#include <ctime>
   26 | 
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/LittleFS/src/LittleFS.h:29,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/LittleFS/src/LittleFS.cpp:26:
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h: In static member function 'static time_t fs::FS::_defaultTimeCB()':
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:243:16: error: 'time' was not declared in this scope
  243 |         return time(nullptr);
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:26:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
   25 | #include <../include/time.h> // See issue #6714
  +++ |+#include <ctime>
   26 | 
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/Updater/src/Updater.h:26,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/Updater/src/Updater.cpp:21:
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h: In static member function 'static time_t fs::FS::_defaultTimeCB()':
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:243:16: error: 'time' was not declared in this scope
  243 |         return time(nullptr);
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:26:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
   25 | #include <../include/time.h> // See issue #6714
  +++ |+#include <ctime>
   26 | 
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/Updater/src/Updater.h:26,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/BearSSLHelpers.h:27,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/BearSSLHelpers.cpp:23:
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h: In static member function 'static time_t fs::FS::_defaultTimeCB()':
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:243:16: error: 'time' was not declared in this scope
  243 |         return time(nullptr);
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:26:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
   25 | #include <../include/time.h> // See issue #6714
  +++ |+#include <ctime>
   26 | 
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/Updater/src/Updater.h:26,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/BearSSLHelpers.h:27,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/CertStoreBearSSL.h:23,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/CertStoreBearSSL.cpp:20:
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h: In static member function 'static time_t fs::FS::_defaultTimeCB()':
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:243:16: error: 'time' was not declared in this scope
  243 |         return time(nullptr);
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:26:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
   25 | #include <../include/time.h> // See issue #6714
  +++ |+#include <ctime>
   26 | 
*** [.pio/build/rpipicow/lib584/PicoOTA/PicoOTA.cpp.o] Error 1
*** [.pio/build/rpipicow/libf0a/LittleFS/LittleFS.cpp.o] Error 1
*** [.pio/build/rpipicow/libe8f/WiFi/CertStoreBearSSL.cpp.o] Error 1
*** [.pio/build/rpipicow/libae9/Updater/Updater.cpp.o] Error 1
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/Updater/src/Updater.h:26,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/BearSSLHelpers.h:27,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiClientSecureBearSSL.h:30,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiClientSecure.h:24,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFi.h:9,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiClass.cpp:30:
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h: In static member function 'static time_t fs::FS::_defaultTimeCB()':
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:243:16: error: 'time' was not declared in this scope
  243 |         return time(nullptr);
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:26:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
   25 | #include <../include/time.h> // See issue #6714
  +++ |+#include <ctime>
   26 | 
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/Updater/src/Updater.h:26,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/BearSSLHelpers.h:27,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiClientSecureBearSSL.h:30,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiClientSecure.h:24,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFi.h:9,
                 from src/main_erster Versuch.cpp:4:
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h: In static member function 'static time_t fs::FS::_defaultTimeCB()':
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:243:16: error: 'time' was not declared in this scope
  243 |         return time(nullptr);
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:26:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
   25 | #include <../include/time.h> // See issue #6714
  +++ |+#include <ctime>
   26 | 
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/Updater/src/Updater.h:26,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/BearSSLHelpers.h:27,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiClientSecureBearSSL.h:30,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiClientSecure.h:24,
                 from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFi.h:9,
                 from src/main.cpp:4:
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h: In static member function 'static time_t fs::FS::_defaultTimeCB()':
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:243:16: error: 'time' was not declared in this scope
  243 |         return time(nullptr);
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/cores/rp2040/FS.h:26:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
   25 | #include <../include/time.h> // See issue #6714
  +++ |+#include <ctime>
   26 | 
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFi.h:15:
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h: In member function 'bool NTPClass::waitSet(void (*)(), uint32_t)':
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:88:17: error: 'time' was not declared in this scope
   88 |         while ((time(nullptr) < 10000000) && (millis() - start < timeout)) {
      |                 ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:1:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
  +++ |+#include <ctime>
    1 | /*
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:94:16: error: 'time' was not declared in this scope
   94 |         return time(nullptr) < 10000000;
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:94:16: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
*** [.pio/build/rpipicow/libe8f/WiFi/BearSSLHelpers.cpp.o] Error 1
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFi.h:15:
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h: In member function 'bool NTPClass::waitSet(void (*)(), uint32_t)':
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:88:17: error: 'time' was not declared in this scope
   88 |         while ((time(nullptr) < 10000000) && (millis() - start < timeout)) {
      |                 ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:1:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
  +++ |+#include <ctime>
    1 | /*
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:94:16: error: 'time' was not declared in this scope
   94 |         return time(nullptr) < 10000000;
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:94:16: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
In file included from /Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFi.h:15:
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h: In member function 'bool NTPClass::waitSet(void (*)(), uint32_t)':
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:88:17: error: 'time' was not declared in this scope
   88 |         while ((time(nullptr) < 10000000) && (millis() - start < timeout)) {
      |                 ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:1:1: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
  +++ |+#include <ctime>
    1 | /*
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:94:16: error: 'time' was not declared in this scope
   94 |         return time(nullptr) < 10000000;
      |                ^~~~
/Users/ludwin/.platformio/packages/framework-arduinopico/libraries/WiFi/src/WiFiNTP.h:94:16: note: 'time' is defined in header '<ctime>'; did you forget to '#include <ctime>'?
*** [.pio/build/rpipicow/src/main_erster Versuch.cpp.o] Error 1
*** [.pio/build/rpipicow/src/main.cpp.o] Error 1
*** [.pio/build/rpipicow/libe8f/WiFi/WiFiClass.cpp.o] Error 1
=========================================== [FAILED] Took 2.03 seconds ===========================================

maxgerhardt · August 19, 2024, 6:50am

It’s still in the build. Delete the .pio folder of the project to get a clean build.

lhm0 · August 19, 2024, 6:51am

it looks like platformIO does not “forget” the mess I created with TimeLib.h, even when I remove the corresponding #include.

Why is that. How can I reset platformIO, so that it “forgets” all history?

maxgerhardt · August 19, 2024, 7:07am

… if it’s removed from the platformio.ini, the .pio folder was deleted, no code or sub-library does #include <TimeLib.h> or references the Time library as its dependency, it should not be included in the build. Did you maybe install the library globally? Delete /Users/<user>/.platformio/lib as needed. Delete /Users/<user>/.platformio/ and restart VSCode if it still fails.

lhm0 · August 19, 2024, 8:00am

Dear Max,

deleting .platformio helped fix the problem.

However, when I re-installed platformIO, I stumbled into the next problem:

“platform = raspberrypi” in platformio.ini generated an error message regarding “board = rpipicow”.

When I used your GitHub repository instead (“platform = https://github.com/maxgerhardt/platform-raspberrypi.git”) it went through o.k.

Anyhow, thank you again for all your help!!

Best regards

Ludwin