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README.md

opencoil-paracity: code

Prerequisites

This guide assumes you have a 4MB ESP12F microcontroller and use Arduino IDE.

Uploading Code

For ESP12F use the following settings in Arduino IDE

  • Board: Generic ESP8266 Module
  • Builtin Led: 2
  • Upload Speed: 921600
  • CPU Frequency: 80 MHz
  • Crystal Frequency: 26MHz
  • Flash Size: 4MB (FS:3MB OTA: ~512KB)
  • Flash Mode: DOUT
  • Flash Frequency: 40MHz
  • Reset Method: dtr (aka nodemcu)
  • Debug port: Disabled
  • Debug Level: none
  • LwIP Variant: v2 Lower Memory
  • VTables: Flash
  • Exceptions: Legacy (new can return nullptr)
  • Erase Flash: depends on if you want to change SSID, Files, or only Sketch
  • Espressif FW: nonos-sdk 2.2.1+100 (190703)
  • SSL Support: All SSL ciphers (most compatible)
  • Port: depend if u are uploading Over The Air, or using a cable
  • Programmer: AVRISP mkII

These settings give you about 2.471 KB of SPIFFS storage space for files and ~512KB sketch size

Over The Air (OTA) Uploading

  • Connect to the hotspot created by the ESP12F.
  • Launch Arduino, choose "esp at 192.168.4.1" as the port.
  • If you don't see the port listed in Arduino (Tools > Port), restart Arduino IDE.

You can upload your sketch and files wirelessly, there is one caveat: SPIFFS file uploads don't work with password protected uploads (line 42). Workaround: flash your sketch with line 42 commented out. Upload your files to SPIFFS, then uncomment the line and Upload the code.