Esp8266 Sntp Example

You need to do the following things: ensure the Wemos is in bootloader mode. Any sketch/example would be useful. Otherwise, ntpq will attempt to read interactive format commands from the standard input. Preambles 13 2. You can connect a microcontroller to the UART and communicate via AT commands with the module. Not expose your. As the internal clock of the ESP8266 isn't quite "real time", your clock will be off by 1-60 minutes every 24h. Example¶ val = adc. First, you include the libraries to connect to Wi-Fi and get time and create an NTP client. This is how you use the Timer on NodeMCU (ESP8266) For example, it is doing okay if you only got few timer tasks to run, while it can be very frustrated if you have more than 10 or 20 timer. The data packet includes a 64-bit timestamp containing the time in UTC seconds since January 1, 1900 with a resolution of 200 ps. , running Espruino on an ESP8266 module (not to be confused with using the ESP8266 as Wifi add-on to an Espruino board). ESP8266 AT Instruction Set - Espressif Systems Aug 4, 2016 - Please use only English letters when naming user-defined AT commands. Example for Arduino. Espressif Systems ! ESP8266 SDK Programming Guide 1. Welcome to Expat, a stream-oriented XML parser library written in C. The led illuminates by half. So how do we figure out how fast to run the timer to keep it in sync with the signal from the GPS? Frequency Locked Loop (FLL) Phase Locked Loop (PLL) Frequency Locked Loop (FLL) Count the number of ticks from one PPS to another one 64 seconds later; At 2MHz this should be. The concept of NTP is that it's run periodically to care for clock drift. As for the WiFi setup, here is s tidbit from the comments of the beginning of the wifichron. ESP32 は、ESP8266とちがって、dualcore であることを、冒頭で述べた。例えば、観測データを 例えば、観測データを 定期的に取得して、ある程度データがたまったらネットワーク経由でどこかに保存する、といった場合、. SNTP != NTP, not by a long shot. Introduction If you have a more number of custom NodeMCU firmware, but firmware name does not contains the details of info about what are the NodeMCU module libraries are present. Could someone point me in the right direction, or maybe show me a library?. I had to workaround this by stopping and starting NTP every now and then. It seems clear, then, that the Panel has very mixed feelings about the use of deprecate to mean "disapprove of. How to use deprecate in a sentence. d-a-v Deprecate axTLS, update examples 92373a9 Nov 30, 2018. While the article discusses in-depth Network Time Protocol (NTP) and Harlan Stenn's long hours spent coding, it doesn't reference Network Time Foundation by name even once. The Ethernet shield allows you to connect a WIZNet Ethernet controller to the Arduino or Genuino boards via the SPI bus. You can connect a microcontroller to the UART and communicate via AT commands with the module. The ESP8266 is a very user friendly and low cost device to provide internet connectivity to your projects. Application Example¶ Implementation of basic functionality of deep sleep is shown in protocols/sntp example, where ESP module is periodically waken up to retrieve time from NTP server. Other users report no problem so I would like to debug this but have a problem to turn on the debug of sntp. Compiling Lua directly on your ESP8266¶ The standard string. The proper name for this type of client is SNTP (Simple Network Time Protocol). The u8g module comes with some great examples. つまりESP8266はdeepSleepの際、実際の時間よりも2%ちょっと速く時間をカウントすることになります。 個体差. Code: Select all -- sync the ESP8266 Real Time Clock (RTC) to an NTP server. Update PWM driver and provide libpwm. Based on code from NTP client example. dump (function) returns a string containing the binary code for the specified function and you can write this to a SPIFFS file. If all of the timing goes correct, the request will be returned, assembled into a string, parsed, and the date and time displayed on the OLED. It should be done by external USB-UART convertor with DTR and RESET output without connected Core module. time and gettimeofday Posted by richard_damon on December 1, 2010 f4zzy, the issue is that FreeRTOS is just a kernel, not a full blown OS, and as such provides only the basic task management routines, but no I/O or similar support functions. It is now possible thanks to the nodemcu-build tool proposed by Frightanic to customize its firmware and to choose the modules that are really needed for its project. ArduinoのSNTPライブラリーでは sntp_get_current_timestamp() という関数で現在時刻を取得します。戻り値は、bulk_send()で必要とするのと同じ協定世界時(UTC)の1970年1月1日00:00:00からの経過秒数です。ESP8266で300秒指定してDeep sleepすると実際には294秒程で起きてきます。. Cheers, Per. It should be done by external USB-UART convertor with DTR and RESET output without connected Core module. May 25, 2017 · I have an ESP8266 NodeMCU board. Update code in iram to solve the problem that space for text is not enough. I prefer to program the ESP8266 using the Arduino IDE, but the same result can be achieved with LUA code or via AT Commands. Expat excels with files too large to fit RAM, and where performance and flexibility are crucial. My problem is with that registering. 8051 8051 Interface ADC Arduino Arduino Core Arduino Interface Button C Programming Electronics Embedded Embedded Interface Embedded Protocol Embedded Sensor ESP32 ESP32 Arduino Core ESP32 Interface ESP32 NodeMCU ESP8266 ESP8266 Arduino-Core ESP8266 Mongoose-OS ESP8266 NodeMCU Firmware Flash Get Start Getting Started Google GPIO HTTP I2C. Chapter 8 OTA Update Introduces how to create a device on iot. As a full implementation of the NTP protocol seemed too complicated for many systems, a simplified version of the protocol, namely SNTP had been defined. Example Commands *The following are examples of what command. lua in the lua_examples/lfs directory for an example of how to do this. Some of the recent ESP8266 core updates made specific mention of changes around BearSSL, but can't tell for certain as that info is missing from the start of the compile log. You customize your NodeMCU firmware and we build it. 5k Highcharts. Same problem with different time servers both local and on the internet. The actual time retrieved is ignored for now. Digital Frequency Synthesis (Example) Digital Frequency Synthesis. Installation instructions, functions and classes reference. There are some hard truths to swallow about the current state of OSS contained within this article published by Harvard Business Review. It is asynchronous and event-driven. replaced with _06-power_meter. See u-blox AT Commands Manual [1] for the AT command descriptions. Before you can run Cloud code on your device you need a couple of important pieces: You need to connect to a wifi network; You need to set the clock (The ESP8266 has a real-time clock that’s reliable once it’s set). My firmware is based on the js-demo-bundle, the only lib in mos. While the article discusses in-depth Network Time Protocol (NTP) and Harlan Stenn's long hours spent coding, it doesn't reference Network Time Foundation by name even once. Copy HTTPS clone URL. begin() function to register sync function. Using the example ntp sketch that is not using the sntp part I get the right time at once. You can connect a microcontroller to the UART and communicate via AT commands with the module. , running Espruino on an ESP8266 module (not to be confused with using the ESP8266 as Wifi add-on to an Espruino board). I have an ESP8266 NodeMCU board. Overview This document provides AT commands based on ESP8266_NONOS_SDK and explain how to use them. #67 Exact Time without RTC Module for the ESP8266: NTP Time Just have a question when I installed the ESP8266 Library on examples i´ve noticed it already have an. The NodeMCU firmware is a companion project to the popular NodeMCU dev kits, ready-made open source development boards with ESP8266-12E chips. Using the example ntp sketch that is not using the sntp part I get the right time at once. Last time on Minimal MQTT, we used a Raspberry Pi to set up an MQTT broker — the central hub of a home data network. Get general information, installation guides and other step-by-step best practice instructions. Code: Select all -- sync the ESP8266 Real Time Clock (RTC) to an NTP server. softAPConfig in Arduino IDE Posted on 16/11/2016 by cellie. js, only in Lua. Chapter 9 Q & A Provides information on where and how to consult questions about ESP32 AT commands. The Dynamic Host Configuration Protocol (DHCP) provides a framework for automatic configuration of IP hosts. Just a couple of days ago, I got a new development board. NTP protocol vs. I've made it compatible with Arduino boards w Eternet module but I have not had the opportunity to test it. flashreload() command and the loader will then load it into flash and immediately restart the ESP module with the new LFS loaded, if the image file is valid. Example¶ The node. I'm sure there is an instructable for it. It does not use the library's SNTP client, but directly queries an NTP time server from pool. Unfortunately it seems to just hang. Turned out the ESP8266 is jamming my bluetooth (at least) when the power led doesn’t come on (but not because the power led doesn’t come on of course, there is something deeper happening). ( I know, that to allow network stack running, I should avoid tight loops and rely on callback functions. txt) or read book online for free. I am trying to develop a NTP client library for ESP8266/Arduino to make adding NTP sync an easier task. For example I received the time: 1432006860 (Mon May 18 21:41:00 2015) but it should be 1431978060 The API describes only an offset for the sntp_get_real_time funtion, but not for the sntp_get_current_timestamp function. NODEMCU Lua ESP8266 With Real Time Clock (RTC) & EEPROM: Getting the correct time is essential if you want to keep a data log. #include #include #include Setting SSID and password. ESP8266 serial bridge. cpp does not specify it. The document is structured as follows. org through 3. The local time when the client sent the request. Information contained on this site regarding device applications and the like is provided only for your convenience and may be superseded by updates. The resolvent of clock synchronization over internet. How to know current time from internet from command line in Linux? For example, with ntpq program? Note: not from computer or operating system clock, but from internet?. Moreover, how to initialise WDT in ESP8266. NTP from ESP8266 via AT commands Sign in to follow this. Get general information, installation guides and other step-by-step best practice instructions. See u-blox AT Commands Manual [1] for the AT command descriptions. Deprecate definition is - to express disapproval of. Which ever site you use you need to make sure the description of the problem is to the point. Arduino Time Sync from NTP Server using ESP8266 WiFi module. Functions Time manipulation clock. The current code queries the SNTP server every 12 hours (line 320 of esp8266. Returns¶ system voltage in millivolts (number) If the ESP8266 has been configured to use the ADC for sampling the external pin, this function will always return 65535. ***Notice:*** * The ESP32 Server needs to download a „service bin" into Flash to provide BLE services. An example of specificationless application is a TSR that installs on a RAM segment. Therefore it seemed to me that the. Red connector is VCC 3. Ideally what I'd would like to have is some sort of debugger, but I've not seen those working on the esp8266 - but there might be a way to enable the debugger which I've yet to find. As a full implementation of the NTP protocol seemed too complicated for many systems, a simplified version of the protocol, namely SNTP had been defined. However on this topic, I got a library not found on "#include ". As the internal clock of the ESP8266 isn't quite "real time", your clock will be off by 1-60 minutes every 24h. The Ethernet shield allows you to connect a WIZNet Ethernet controller to the Arduino or Genuino boards via the SPI bus. ESP8266 in a Wemos D1 mini board, because they're so easy to use. real time clock Hi there. • The bit 0 of the first byte of ESP8266 MAC address can not be 1. One thing I need[ed] is a way to save preferences on my ESP32 machines. ( I know, that to allow network stack running, I should avoid tight loops and rely on callback functions. org to get the current "UNIX time" (seconds since 1/1/1970, UTC (GMT)). Apart from the usual “smart” stuff, it does still need to display correct time :) and hence, the need for an ntp driver/client. Also verify that you are using an up-to-date NodeMCU release, as some early releases of NodeMCU 1. News, Tutorials, Reviews, and How-Tos related to Embedded Linux and Android, Arduino, ESP8266, Development Boards, TV Boxes, Mini PCs, etc. An NTPClient to connect to a time server. It is a simple piece of code. NTP is mainly distubuted as a LINUX \ UNIX daemon, however, it does have a port to Windows NT. You customize your NodeMCU firmware and we build it. Note: I am not an electronics person!!. As well as getting the time, the code is a nice simple example of a UDP client. If you have problems integrating that with your project due to compiler/linker problems, take a look at a 1. Could someone point me in the right direction, or maybe show me a library?. btw: there is no rtc in esp8266 Yes Sir, I understand that there is no hardware RTC in ESP8266 but was wondering if there were any soft RTC solutions. Upload the program and see LED starts blinking at every 0. One of the big gotcha's interacting with the ESP8266 is realizing that a webpage request, or any other web info, can be sent via UART from the ESP8266 at pretty much any time (minimal buffering). Please fork it, use it as an archive, a reference or as an example to learn developing ESP8266/Arduino sketches/libraries :) NTPClient. Collins, Colorado. As well as getting the time, the code is a nice simple example of a UDP client. The table below lists the time servers used by the NIST Internet Time Service (ITS). Update AT firmware to ESP8266 (ESP12E) in Linux During the development of SW support of BigClown Wi-Fi module with ESP8266 in ESP12E module. Consider the thermostat code to be legacy. 0 International. ( I know, that to allow network stack running, I should avoid tight loops and rely on callback functions. h at master · esp8266/Arduino · GitHub * example code illustrating time synced from a GPS И все ясно и понятно - откуда. By default, this will use the servers 0. ESP8266 serial bridge. js, only in Lua. There are a couple of differences, but it's really easy to use, thanks to the great. I need to implement a timer and looked at the sntp example in the API guide. Ports can be disabled using the following commands:. The rest is deepsleep Andreas Spiess SNTP library: https #60 How to use the RTC Memory in ESP8266 and reduce power. But you can also write your own application that runs in the ESP8266 module. It is asynchronous and event-driven. This is how to use it to set the time:. First i was thinking on using a real time clock with battery backup (the traditional way) but hey, i would be alot nicer to use the NTP protocol to receive the time. Lua application for management Sonoff WiFi Smart Switch, there is no need cloud, broker or third party server. An open source Operating System for the Internet of Things. To do this, the Network Time Protocol (NTP) is used. It should be enough for pretty much any MBED application that I can think of. The I/O ports in STM32 are usually named as GPIOA, GPIOB, etc. The proper name for this type of client is SNTP (Simple Network Time Protocol). Problem description. Points of interest Firewall and anti-virus software. ESP8266 WiFi – HTTP GET For example, after creating a new policy, using the. 8051 8051 Interface ADC Arduino Arduino Core Arduino Interface Button C Programming Electronics Embedded Embedded Interface Embedded Protocol Embedded Sensor ESP32 ESP32 Arduino Core ESP32 Interface ESP32 NodeMCU ESP8266 ESP8266 Arduino-Core ESP8266 Mongoose-OS ESP8266 NodeMCU Firmware Flash Get Start Getting Started Google GPIO HTTP I2C. By default, this will use the servers. org to get the current "UNIX time" (seconds since 1/1/1970, UTC (GMT)). At the final step, the differences between the final product and its prototypes are only in their form factor. readvdd33() Parameters¶ none. Digital Frequency Synthesis (Example) Digital Frequency Synthesis. So for me this is a bug in the sntp_get_current_timestamp function. I have added. Cheers, Per. They're cheap enough, and provide a good enough package to start experimenting. You customize your NodeMCU firmware and we build it. com:flank1er/esp8266_sdk_examples. 除额外注明的地方外,本维基上的内容按下列许可协议发布: CC Attribution-Share Alike 4. Works like a charm. Check the build stats. mode is qio for 512 kByte modules and dio for 4 MByte modules (qio might work as well, YMMV). I’ve taken some of the relevant parts for a simple two page Lua script that prints out two alternating screens of text. If you have a server with a static IP, please consider joining the pool!. Note that multiple connections to port 23 and 2323 can be made simultaneously. illustration guide we will going to wire the WIZNET W5100 module to run as NTP server client and act as your local area network time server provider sync. Da wir das Rad hier und heute nicht neu erfinden werden, laden wir uns dazu zwei Bibliotheken aus dem Internet runter und binden Diese in die Arduino IDE ein. ESP8266 Secure MQTT Connection with Client Certificate Authentication - mqtt_tls_working. ESP32 は、ESP8266とちがって、dualcore であることを、冒頭で述べた。例えば、観測データを 例えば、観測データを 定期的に取得して、ある程度データがたまったらネットワーク経由でどこかに保存する、といった場合、. ESP8266 AT Instruction Set - Espressif Systems Aug 4, 2016 - Please use only English letters when naming user-defined AT commands. sntp_config (enable, timezone=None, server=None) ¶ Configure the built in ESP SNTP client with a UTC-offset number (timezone) and server as IP or hostname. "\n" must become "\\n". net is a notification service with clients for Android, iOS and Web. Time is the unit measuring our life. com:flank1er/esp8266_sdk_examples. I'm sure there is an instructable for it. Currently, it works on ESP8266 based boards. Ports can be disabled using the following commands:. There is one potential issue with Polycom phones and the time settings: The DHCP server will ALWAYS over-ride the time settings from the WWW interface. 0 International CC Attribution-Share Alike 4. Preambles 14 2. The ESP8266 gadgets don't mind if a single sprinkler is pummelled - it simply results in the time starting from the last received call-out - which won't be that many milliseconds behind the first. SNTP – the sntp routines work – you can get the time from a server – but if you add in from the SDK documentation, the bit to set the time zone first – it will then NOT get the time. This is necessary to verify that. The operation starts as soon as the card is detected (the Mac address is displayed). I need to implement a timer and looked at the sntp example in the API guide. Da wir das Rad hier und heute nicht neu erfinden werden, laden wir uns dazu zwei Bibliotheken aus dem Internet runter und binden Diese in die Arduino IDE ein. SNTP is usually used on the 'leaves' of a network to synchronise workstations where the accuracy of NTP is not required. As the stock Huzzah comes with NodeMCU Lua 0. This header file contains definitions of functions to get and manipulate date and time information. h \\trib\apps\chargen\chargen. NTP protocol vs. 2C-ESP8266 SDK Programming Guide en v1. esp8266 nodemcu. There are a number of applications, libraries and hardware using Expat , as well as bindings and 3rd-party wrappers. Release Notes Chapter Title Subject Chapter 1 Preambles An instruction to the ESP8266EX Chapter 2 Overview An overview of the ESP8266_NONOS_SDK Chapter 3 System APIs Important system APIs for timer control, SPI flash operations, Wi-Fi. You can also call settimeofday function manually to set time from some other source. illustration guide we will going to wire the WIZNET W5100 module to run as NTP server client and act as your local area network time server provider sync. The Arduino libraries were chosen to complement the same libraries in the attached ATMega AVR. Now, when powered-up, the ESP8266 will log into your home router, connect to NIST, and request the current time and date. i have the right voltage set 3. Preambles ESP8266 WiFi SoC offers a complete and self-contained Wi-Fi networking solution; it can be used to host the application or to offload Wi-Fi networking functions from another application processor. cpp does not specify it. ESP8266 WiFi – HTTP GET For example, after creating a new policy, using the. com/flank1er/esp8266_sdk_examples. Google "esp8266 ntp time) certainly shows lots of examples. Only certain addresses from Google's pool work at any given time depending on how Google chooses to deploy its web server network, which is why a random example above one of these ranges may or may not work for you at a specific time. The time synchronization between Client and Server works as follows: The client sends a NTP message to the time server, which analyses the packet, substitutes the IP adresses and a few other fields, and than sends the packet back. When not measuring, the ESP8266 is put in deep-sleep mode. @crushedice2000 the question is why they have a transistor + resistor there, it make no sense to me. See the section on sessions and limiting cryptographic negotiation for ways of ensuring faster modes are used. Contribute to esp8266/Arduino development by creating an account on GitHub. Code: Select all -- sync the ESP8266 Real Time Clock (RTC) to an NTP server. h \\trib\apps\chargen\chargen. com says hello 250-STARTTLS 250-ENHANCEDSTATUSCODES 250-PIPELINING 250-CHUNKING 250-8BITMIME 250-XACK 250-XMRG 250-SIZE 54525952 250-VERP 250 DSN. I went poking around and found some code, which I adapted, reworked, and extended, to make the M5-SNTP Sample Sketch. 5 (Linux), Board: "DigiStump Oak, 80 MHz, 4M (1M SPIFFS), v2 Prebuilt (MSS=536), Disabled, None, 921600. I'm working on a project with the ENC28J60 and a 18F2620 where i need to get date and time. Its called Redbear Duo. It does not use the library's SNTP client, but directly queries an NTP time server from pool. do you know what local port # the builtin sntp service uses? david. 7 thoughts on " ESP8266 Wi-Fi tutorial and examples using the Arduino IDE " Dan L September 26, 2017. To avoid doing this manually you can use the Espruino File Converter page. HTTPClient/HTTPServer cookbook uses LWIP. org NTP-servers to see how the SNTP protocol works. A burst of call-outs will go out once the event title is parsed. Preambles 13 2. This document describes NTP version 4 (NTPv4), which is backwards compatible with NTP version 3 (NTPv3), described in RFC 1305, as well as previous versions of the protocol. js, only in Lua. ESP Sample code. We'll see how that goes. You need to do the following things: ensure the Wemos is in bootloader mode. I'm working around an IoT prototype using Mongoose OS and AWS IoT on an ESP8266 dev-board. Get time from NTP with ESP8266 I'm using the Arduino IDE for a clock project, and I was wondering how I could get the time from NTP with the ESP. The local_time example actually uses the SNTP library, and could be a good guide in case of other issues. I built the binary using their cloud service with following modules: rtctime, sntp, cron amongst others. ESP8266 AT Instruction Set - Espressif Systems Aug 4, 2016 - Please use only English letters when naming user-defined AT commands. • The bit 0 of the first byte of ESP8266 MAC address can not be 1. ( I know, that to allow network stack running, I should avoid tight loops and rely on callback functions. Time is the unit measuring our life. option as with dsleep(), the option sets the sleep option, if specified. The table lists each server's name, IP address, and location, organized geographically within the US from North to South and then from East to West. Information contained on this site regarding device applications and the like is provided only for your convenience and may be superseded by updates. The document "DHCP Options and BOOTP Vendor Information Extensions" describes options for DHCP, some of which can also be used with BOOTP. Everything seems ok until I mix these 2 function: custom AWS shadow update and ota-aws-shadow library. The Arduino libraries were chosen to complement the same libraries in the attached ATMega AVR. Unfortunately it seems to just hang. py --port erase_flash. It can be checked calling NTP. It has a CP2102 usb-serial adaptor. Not expose your. The document is structured as follows. Overview This document provides AT commands based on ESP8266_NONOS_SDK and explain how to use them. Arduino itself has limited resources and I would like to use them for the actual work. I happen to have around 8 of them. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Shelly devices do not have a built-in real time clock but will automatically synchronize their clock when in WiFi Client mode and there is connection to the Internet. In this chapter we will prepare the ESP SoC chip that will connect to the local WiFi and host the website for controlling and monitoring the grow box. A couple of questions: do you need 5v on the board? Could the ssr be triggered by 3. softAPConfig in Arduino IDE Posted on 16/11/2016 by cellie. I would have assumed that there is a port of ntpq for Windows, but was una. NTP from ESP8266 via AT commands Sign in to follow this. 4 GHz), с пропускной способностью до 150 Mbps, и Bluetooth Low Energy стандарта 4. This is a few years old, and it seems things have changed, i couldn't get this to work. Với hàm này giúp ESP8266 vào chế độ cấu hình với WPS và kết nối đến mạng wifi của router. On Espruino on the ESP8266 this is super-simple (192. Overview This document provides AT commands based on ESP8266_NONOS_SDK and explain how to use them. It does not use the library's SNTP client, but directly queries an NTP time server from pool. Ví dụ này ESP8266 sẽ được đưa sẳn vào chế độ WPS, mà không cần thêm nút nhấn nào. For working with the ESP8266 Wi-Fi module I see two general options. There are a couple of differences, but it's really easy to use, thanks to the great libraries that come with the ESP8266 Arduino Core. Due to the memory constraints on ESP8266, the supported page/body size is limited by available memory. 1 is my NTP time server and 9 is the timezone offset):. To discover how the bookstore works, it is best to go through a small example. One thing I need[ed] is a way to save preferences on my ESP32 machines. Last time on Minimal MQTT, we used a Raspberry Pi to set up an MQTT broker — the central hub of a home data network. May 25, 2017 · I have an ESP8266 NodeMCU board. How to configure minpoll and maxpoll values in /etc/ntp. Cheers, Per. The Daylight Saving Time flag (tm_isdst) is greater than zero if Daylight Saving Time is in effect, zero if Daylight Saving Time is not in effect, and less than zero if the information is not available. The SNTP module implements a Simple Network Time Procotol client. real time clock Hi there. Espruino devices do not usually have a proper battery-backed RTC available, so the second easiest way to get a time is via (S)NTP. For examples and usage, see the NTP Debugging Techniques page. softAPConfig in Arduino IDE Posted on 16/11/2016 by cellie. Unfortunately it seems to just hang. This is a few years old, and it seems things have changed, i couldn't get this to work. 1", 9); but that does not work on Espruino on the ESP32 as Wifi. This is a violation of the SNTP RFC, which states that SNTP systems can only act as servers if they have a local reference clock attached. Works like a charm. ino // Synchronize time useing SNTP. Espressif Systems ! ESP8266 SDK Programming Guide 1. NodeMCU(ESP8266) as provider of NTP date and time over serial port I've boon looking for possibility to have current date and time on my Arduino projects. 455] do_subscribe Subscribing to 'esp8266_64C6BA/rpc/#' ChaquesegmentTCPtransmisparl'ESP8266estchiffréparTLS: [email protected]:~$ sudo tcpdump -i wlxa0f3c11449ec -lnvvX. The program was tested with the device Sonoff, which you see in the picture, but it is likely that it will also work with older versions Sonoff modules or smart socket. Supported microcontrollers: ESP32, ESP8266, STM32, TI CC3200, TI CC3220. I added only a small SNTP section, since this is the file designed for customizations of LWIP and SNTP (and other LWIP parts). An NTPClient to connect to a time server.