How do I use PlatformIO to flash ESP-12F (ESP8266MOD)

Question

In PlatformIO while creating a project , in the board selection there is no ESP-12F in the boards. While there is ESP-12E. I can flash ESP-12F while choosing ESP-12E from the boards without any flashing issue. But there are some runtime issues, the one that I noticed is the LED doesn't blink when flashed from PlatformIO , but works fine, when flashed using Arduino IDE using the same code. So there may be some difference in the configurations.

C:\Users\USER\.platformio\platforms\espressif8266\boards

In this directory I found the esp-12e board which is a JSON format.

{
 "build": {
 "core": "esp8266",
 "extra_flags": "-DESP8266 -DARDUINO_ARCH_ESP8266 -DARDUINO_ESP8266_ESP12",
 "f_cpu": "80000000L",
 "f_flash": "40000000L",
 "flash_mode": "dio",
 "ldscript": "eagle.flash.4m1m.ld",
 "mcu": "esp8266",
 "variant": "nodemcu"
 },
 "connectivity": [
 "wifi"
 ],
 "frameworks": [
 "arduino",
 "simba",
 "esp8266-rtos-sdk",
 "esp8266-nonos-sdk"
 ],
 "name": "Espressif ESP8266 ESP-12E",
 "upload": {
 "maximum_ram_size": 81920,
 "maximum_size": 4194304,
 "require_upload_port": true,
 "resetmethod": "nodemcu",
 "speed": 115200
 },
 "url": "http://www.esp8266.com/wiki/doku.php?id=esp8266-module-family",
 "vendor": "Espressif"
}

How do I add ESP-12F to the PlatformIO boards and flashing without any issue.

• Majenko: Ask platformIO... it's their responsibility to keep their boards packages up to date for their platform...
• Khaalidi: @Majenko Thanks for the direction!! :)

Answer 1

At the PlatformIO community I asked the same question, and pfeerick suggested to add a build flag.

It’s most likely the onboard LED is on GPIO2, not GPIO1 so try adding

build_flags = -D LED_BUILTIN=2 to your platformio.ini ... hopefully that kicks in before the pins_arduino.h defintion.

But It didn't did the trick. And the compiler throws a bunch of warnings. What I did to make it work is to ignore LED_BUILTIN constant and use 2 instead. 😎😎😎😎😎🤣🤣

#include <Arduino.h>
void setup() {
 pinMode(2, OUTPUT);
}
void loop() 
{
 digitalWrite(2,LOW);
 delay(200);
 digitalWrite(2,HIGH);
 delay(200);
}

• Makotosan: The build flags shouldn't have a space after the "D". build_flags = -DLED_BUILTIN=2