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PZEM T004 Single-phase mains parameter WIFI logger using ESP8266

Информация о материале
Автор: Vsevolod V Gromov
Категория: DIY, electronics
Опубликовано: 15 августа 2020
Просмотров: 916
  • esp8266
  • wifi
  • diy
  • pzem
  • t004
  • iot
  • power
  • logger

In memory of my mother, Gromova Margarita Ivanovna. Thank you, and rest in peace.

iconThe following is a result of more than two years of efforts, in fields of PCB and schematics software mastering, C software design, ESP8266 platform development, and struggling through quirks of Embarcadero;s Firemonkey framework in C++, all in spare time between a supper, and night sleep.
Finally, ESP8266+PZEM T004 - based WIFI PowerMetering logger is here, both, as IoT firmware, and PC client software.

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C++ Reflection approach

Информация о материале
Автор: Vsevolod V Gromov
Категория: Programming
Опубликовано: 04 сентября 2018
Просмотров: 1176
  • programming
  • esfwx
  • c++
  • whitepaper

A brief article on C++ reflection approach implemented in ESFWX framework

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Implementing custom-drawn series for FMX TeeChart library

Информация о материале
Автор: Vsevolod V Gromov
Категория: Embarcadero
Опубликовано: 22 июня 2018
Просмотров: 1290

steema-logoRequirements and pre-conditions:

  1. Chart series may contain different point types:
    1. First, let's call them 'automatic' - which may have been acquired by some logger process, in ordered, evenly spaced moments in time.
    2. Other type is 'manual', - meaning, that thesee may be acquired as a result of explicit user-to-device interaction during the same measurement session, as an automatic ones. These manual points usually have an arbitrary distributed x, and sometimes even y values.
  2. Chart series should draw automatic and manual points differently, while allowing these points to be iterated as a members of the same sequence.

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building boost with MSVC from command line

Информация о материале
Автор: Vsevolod V Gromov
Категория: Programming
Опубликовано: 30 января 2018
Просмотров: 1399

When using boost framework, which I usually try to avoid, if possible, I further avoid using its binary libraries. Mainly because it's required to build these, and it's not as easy as it may seem.
First, you should build the boost build engine itself. My most recent attempt was with boost 1.66 + MSVC 2017. Needless to say, that I ran into quite usual showstopper. Boost could not compile b2 because it could not find a few C++ headers, and libraries. Following are necessary steps to perform to avoid these obstacles.

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SDMMC over SPI library with ESP8266

Информация о материале
Автор: Vsevolod V Gromov
Категория: Programming
Опубликовано: 24 июля 2017
Просмотров: 1507
  • programming
  • esp8266
  • sdmmc
  • spi
  • hspi
  • embedded

I started ESP8266 project, the first step was to support SDMMC over SPI. I have implemented SDMMC SPI interface years ago. The main challenge was to adapt it to new MCU core. After many attempts, it was up and running. Below are lessons learned.

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Deploying and Signing OSX app the right way

Информация о материале
Автор: Vsevolod V Gromov
Категория: Embarcadero
Опубликовано: 18 мая 2017
Просмотров: 1572
  • third-parties
  • esscript
  • deployment
  • macos
  • cppbuilder

Recently, I've complete my 'geshtalt' - migrate and release Windows FMX app, Ecolight-AP under MacOSX platform. And, by God, it was painful and hard, mainly due to EMB toolchain tried to fracture my butt on almost each final step.
The dehydrated knowledge here is crystallized two weeks of pain and swearing, and sweatting.
Problem starts reveling itself after all Debug stuff was successfully brushed on MAC, under PAServer session, and Release for App Store was created with Developer ID * certificates, which allow to install from signed local pkg.

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FTDI EVE header library

Информация о материале
Автор: Vsevolod V Gromov
Категория: Programming
Опубликовано: 24 апреля 2017
Просмотров: 1900
  • programming
  • embedded
  • ft232h
  • esscript
  • ft800

Recently I've implemented lightweight header library to encapsulate interfacing with FTDI EVE chip, namely, FT800, in templated OO manner.  It should compile in modern embedded x86/ARM toolchains, like ones Keil or C++ Builder have. 

The idea is as follows - while your core framework provides standard IO bus interface, like mine esfwxe, via EseChannel templated abstract facade, the rest is done in modular manner by EVE library classes.

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PO2TXT converter script for FMX TLang

Информация о материале
Автор: Vsevolod V Gromov
Категория: Utilities
Опубликовано: 12 декабря 2016
Просмотров: 1695
  • utilities
  • tools
  • programming
  • esscript

For the recent mobile FMX application development, I had a challenge, do not use any service from my full-featured cross-platform framework, to minimize application bloat, besides, FMX framework itself is rather big piece of cake.

One of the cornerstones is a I18N support which in my framework is based upon custom implementation of gettext. In current case, I decided to wrap I18N manager coode around FMX's TLang. As far as TLang may use, besides its binary stoarage, the plain text files as well, formatted as key=value pair.

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  1. Restricting Windows FMX application to single instance
  2. Using distinct elements of standard style in our own GUI elements
  3. ES Framework
  4. It's dynamic linking time, with C++Bulder and OSX
  5. Firemonkey style hack
  6. Some notes on working with FMX styles
  7. WinSparkle with multilanguage support
  8. Иногда они возвращаются... или std::locale static linkage bug in C++ Builder

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Популярные метки

programming 17 esscript 8 third-parties 6 embarcadero 6 embedded 4 firemonkey 4 example 4 utilities 3 styles 3 excatsoft 3

Последние публикации

  • ESS Scripting Console command line parameters
  • PZEM T004 Single-phase mains parameter WIFI logger using ESP8266
  • C++ Reflection approach
  • ESS script to convert UTF-8 into C escaped hex
  • Implementing custom-drawn series for FMX TeeChart library
  • building boost with MSVC from command line
  • Example of changes to the new version of esscript
  • SDMMC over SPI library with ESP8266
  • ES Script example of I2C interfacing to OPT3001 lighting sensor
  • ES Script example of communicating with AD-7732 UART camera
  • Deploying and Signing OSX app the right way
  • FTDI EVE header library
  • ES Script example of FTDI MPSSE controlling 28BYJ-48 stepper motor
  • PO2TXT converter script for FMX TLang
  • Restricting Windows FMX application to single instance
  • Using distinct elements of standard style in our own GUI elements

Самое читаемое

  • esscript NMEA parser
  • NXP MCU ISP excerpt from ES Script codebase
  • ES script object dynamic layout
  • NMEA parser extension for MTK 3333
  • Конфигурация svnserve
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