ESP8266 Community Forum

I may be misunderstanding something here. I purchased an ESP8266 development board and I'm programming it through the Arduino IDE per the instructions here. I seem to be able to flash it regardless of GPIO0's state (I've read it is supposed to be pulled to ground to flash).

The issue is that when I flash my program it works fine until I pull the power. When I power on again, it's in some default state. Is this the normal mode of operation? Is there a way to write my program to a non-volatile memory? Perhaps I am not actually updating the flash memory or I am misunderstanding something here.

FWIW it's this dev board.

Complete shot in the dark here but I understand that CH-PD pulled to high puts it in boot loader mode? Try to flash the sketch, remove gpioO from low and make sure chpd is not pulled high... I could be wrong here, I am having communication errors with my module in arduino ide. Getting an espcomm_uplade_mem failed error and espcomm_sync failed error. I would think this would be related to tx and rx but I have tried them both ways on the FTDI chip. Maybe someone can help with that?

Remove the 2 pin jumper to run code in Flash. When the jumper is present, the board powers up in Flash load mode (that is, does not run the code in Flash).

gdsports wrote:Remove the 2 pin jumper to run code in Flash. When the jumper is present, the board powers up in Flash load mode (that is, does not run the code in Flash).

Thanks I feel like a dummy there was a little jumper on the board pulling GPIO0 low.