ESP8266 Community Forum

- Thu Mar 02, 2017 11:56 am #63238 I have two ESP8266-01.
When I try a program (f.e. https://www.arduino.cc/en/Reference/WiFiClient) then this program loads OK, but the program execution in NOK. This happens with both ESP's.

I check my ESP's with the Arduino IDE: File -> Examples -> ESP8266 -> CheckFlashConfig and get the following result:

Code: Select allFlash real id : 001440E0
Flash real size: 1048576

Flash ide size: 524288
Flash ide speed: 40000000
Flash ide mode: DIO
Flash configuration WRONG!   <------  !!


I have been using these ESP's with NodeMCU before. Could that be the cause of the problem?
What should I do to flash them right?

- Thu Mar 02, 2017 4:34 pm #63259 If you check this sketch, it simply giving the error because "ideSize != realSize".
You need to select 1M Flash size in the IDE menu.

- Fri Mar 03, 2017 5:21 am #63282

If you check this sketch, it simply giving the error because "ideSize != realSize".
You need to select 1M Flash size in the IDE menu.

You are right. Thanks.