Upgrade from 3.0.7 to 3.1.0 and 3.1.1 causes severe crash with ESPNtpClient library

[ednieuw]

Board

Arduino Nano ESP2, ESP-C3-13, ESP32-S3-Zero

Device Description

None

Hardware Configuration

No

Version

latest master (checkout manually)

IDE Name

Arduino IDE 1 and IDE 2

Operating System

Windows 11

Flash frequency

80 MHz

PSRAM enabled

yes

Upload speed

115200

Description

After an upgrade from core 3.0.7 to 3.1.0 and also 3.1.1 something changed that crashes the MCU of the Arduino Nano ESP32 after the NTP.begin (); .
On the Arduino Nano there is no crash dump visible, it just loosing its COM port and the onboard LED is flasing red-green-blue.
With the ESP-C3-13 I can get a memory dump in the serial monitor. (see below)

The NTP library is from here: https://github.com/gmag11/ESPNtpClient

When NTP.begin (); is removed from the code the C3 MCU also crashed with a shorter dump

ESP-ROM:esp32c3-api1-20210207
Build:Feb  7 2021
rst:0x1 (POWERON),boot:0xc (SPI_FAST_FLASH_BOOT)
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fcd5820,len:0x1144
load:0x403cc710,len:0xad8
load:0x403ce710,len:0x2f80
entry 0x403cc710
E (186) esp_core_dump_flash: Core dump data check failed:
Calculated checksum='7a015a5f'
Image checksum='ffffffff'

after commenting these lines

  //  NTP.setTimeZone (TZ_Etc_UTC);
  //  NTP.begin ();

The ESP-C3-13 overheated and died. Maybe this last upload did not finish at all. I cannot remember.
There was nothing attached to the ESP-C3-13.
The Espressif metal case became very hot.

I have no idea where to look further without knowing what is changed between 3.0.7 and 3.1.0
The overheating can be a coincidence but for now I stop experimenting with this core version.

Sketch

#include <Arduino.h>
#include <ESPNtpClient.h>
#include <WiFi.h>


#define SHOW_TIME_PERIOD 1000

void setup() {
    Serial.begin (115200);
    Serial.println ();
    WiFi.begin ("FRITZ!BoxEd", "eddie2506");
    NTP.setTimeZone (TZ_Etc_UTC);
    NTP.begin ();
}

void loop() {
    static int last = 0;

    if ((millis () - last) >= SHOW_TIME_PERIOD) {
        last = millis ();
        Serial.println (NTP.getTimeDateStringUs ());
    }
}

Debug Message

Rebooting...
ESP-ROM:esp32c3-api1-20210207
Build:Feb  7 2021
rst:0xc (RTC_SW_CPU_RST),boot:0xc (SPI_FAST_FLASH_BOOT)
Saved PC:0x403818f0
SPIWP:0xee
mode:DIO, clock div:1
load:0x3fcd5820,len:0x1144
load:0x403cc710,len:0xad8
load:0x403ce710,len:0x2f80
entry 0x403cc710

assert failed: udp_new /IDF/components/lwip/lwip/src/core/udp.c:1239 (Required to lock TCPIP core functionality!)
Core  0 register dump:
MEPC    : 0x4038139e  RA      : 0x4038737a  SP      : 0x3fca1420  GP      : 0x3fc8fe00  
TP      : 0x3fca1610  T0      : 0x37363534  T1      : 0x7271706f  T2      : 0x33323130  
S0/FP   : 0x00000001  S1      : 0x3fca15c1  A0      : 0x3fca1484  A1      : 0x3fc922f9  
A2      : 0x00000001  A3      : 0x00000029  A4      : 0x00000001  A5      : 0x3fc98000  
A6      : 0x7a797877  A7      : 0x76757473  S2      : 0x00000056  S3      : 0x3fca1478  
S4      : 0x3fca1478  S5      : 0x3c0c9f60  S6      : 0x00000000  S7      : 0x00000000  
S8      : 0x00000000  S9      : 0x00000000  S10     : 0x00000000  S11     : 0x00000000  
T3      : 0x6e6d6c6b  T4      : 0x6a696867  T5      : 0x66656463  T6      : 0x62613938  
MSTATUS : 0x00001801  MTVEC   : 0x40380001  MCAUSE  : 0x00000007  MTVAL   : 0x00000000  
MHARTID : 0x00000000  

Stack memory:
3fca1420: 0x00000000 0x00000000 0x3c0d4ea8 0x4038de66 0x00000000 0x00000000 0x00000000 0x3fc922f8
3fca1440: 0x00000000 0x00000000 0x00000000 0x39333231 0x00000000 0x3fc92660 0x3c0d4ea8 0x3fc92b24
3fca1460: 0x3c0c9f60 0x3fc92670 0x3fca144c 0x3fc92674 0x3c0c8728 0x3fc922f8 0x00000000 0x00000000
3fca1480: 0x00000000 0x65737361 0x66207472 0x656c6961 0x75203a64 0x6e5f7064 0x2f207765 0x2f464449
3fca14a0: 0x706d6f63 0x6e656e6f 0x6c2f7374 0x2f706977 0x7069776c 0x6372732f 0x726f632f 0x64752f65
3fca14c0: 0x3a632e70 0x39333231 0x65522820 0x72697571 0x74206465 0x6f6c206f 0x54206b63 0x50495043
3fca14e0: 0x726f6320 0x75662065 0x6974636e 0x6c616e6f 0x21797469 0x00000029 0x00000005 0x00000004
3fca1500: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x3c0d1000 0x420a2180
3fca1520: 0x00001800 0x00000005 0x3fc982d0 0x3fca1568 0x00000e10 0x00000000 0xffffff9f 0x00000001
3fca1540: 0x00000001 0x00000000 0x3fc9425c 0x0e354d7a 0x00000000 0x00000000 0x00000000 0x00000000
3fca1560: 0x3fc98000 0x00000000 0x3fc92ef8 0x42027a12 0x3c0c0140 0x00000000 0x3fc92ef8 0x420003f0
3fca1580: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x3fc93000 0x4038279a
3fca15a0: 0x00000000 0x00000000 0x3fc93000 0x3fc9425c 0x00000000 0x00000000 0x3fc93000 0x0e354d7a
3fca15c0: 0x00000000 0x00000000 0x00000000 0x4200763c 0x00000000 0x00000000 0x00000000 0x40388636
3fca15e0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fca1600: 0x00000000 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xa5a5a5a5 0xbaad5678
3fca1620: 0x00000168 0xabba1234 0x0000015c 0x3fca1320 0x00000009 0x3fc936c0 0x3fc936c0 0x3fca162c
3fca1640: 0x3fc936b8 0x00000018 0x00000000 0x00000000 0x3fca162c 0x00000000 0x00000001 0x3fc9f61c
3fca1660: 0x706f6f6c 0x6b736154 0x00000000 0x00000000 0x3fca1610 0x00000005 0x00000000 0x00000001
3fca1680: 0x00000000 0x3fca6944 0x42010e88 0x00000b14 0x00000000 0x3fc99064 0x3fc990cc 0x3fc99134
3fca16a0: 0x00000000 0x00000000 0x00000001 0x00000000 0x00000000 0x00000000 0x42010574 0x00000000
3fca16c0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fca16e0: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fca1700: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fca1720: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fca1740: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fca1760: 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000 0x00000000
3fca1780: 0x00000000 0x00000000 0xbaad5678 0x00000068 0xabba1234 0x0000005c 0x00000000 0x3fca1798
3fca17a0: 0x00000000 0x00000000 0x00000000 0x3fca17b0 0xffffffff 0x3fca17b0 0x3fca17b0 0x00000000
3fca17c0: 0x3fca17c4 0xffffffff 0x3fca17c4 0x3fca17c4 0x00000001 0x00000001 0x00000000 0x9100ffff
3fca17e0: 0x00000000 0x50708bab 0x7ecb0c01 0xc413fdf9 0x5d0f14ce 0xbaad5678 0x00000168 0xabba1234
3fca1800: 0x0000015c 0x3fca1860 0x3fca1860 0x3fca1960 0x3fca195f 0x00000000 0x3fca181c 0xffffffff



ELF file SHA256: 3d88f2235

Other Steps to Reproduce

No response

I have checked existing issues, online documentation and the Troubleshooting Guide

• I confirm I have checked existing issues, online documentation and Troubleshooting guide.

[Jason2866]

The network part in core 3.1.x has been refactored. The NTP lib needs to be changed to work with these changes.

[lbernstone]

FYI, the sntp method used in the built-in sntp client is microsecond precision, but does not calculate round trip. Does your app really need such accuracy?

[ednieuw]

No, it does not need this accuracy. I will rebuilt my sketch and use the sntp method.