ESP8266 Community Forum

Posted: **Fri Aug 14, 2020 8:28 am**

Hi!, I'm new in this forum. I'm developing my own Board. It's based on ESP8266 micro, and I have many doubts.
I want to use my Board with Arduino, and now I don't know how I have to burn the bootloader the first time.

I was reading about boot mode here:
https://github.com/espressif/esptool/wi ... -Selection

On my hardware, I have a GPS. The schematics is:
TX_gps > GPIO13
RX_gps > GPIO15 (whit pull down resistor)

GPIO2 (whit pull up resistor)
GPIO0 (whit pull up resistor)

My doubts are:
Is my schematic a good design?
when I first submitted my design to be manufactured. How can I program it for first time?

Sorry for my poor english, I hope I was clear!

Posted: **Fri Aug 14, 2020 4:23 pm**

the bootloader (to get into flashing mode) is fixed internal to the esp8266 chip, so no need to burn it (like on atmel based arduinos).

Posted: **Sat Aug 29, 2020 12:46 pm**

And the "second" and "third" stage bootloaders are in the flashed image.

ESP8266 Community Forum

Bootloader questions in my own design

Bootloader questions in my own design

Re: Bootloader questions in my own design

Re: Bootloader questions in my own design