QuestionsCategory: General Questionesp12f code doesnt upload
Aaron fernando asked 11 months ago

I tried uplaoding the code to esp 12f board and when i pressed the reset button it keeps me sending this message 
ets Jan 8 2013,rst cause:2, boot mode:(7,6)  
waiting for host”
Does anyone know the reason for that ? and the code wont upload as well, Thank you . reset pin pulled up , EN pin pulled up , GPIo0 pulled up , Gpio 15 pulled down . and a cap thorough vcc and gnd.

2 Answers
RichardS Staff answered 11 months ago

It can be bad power supply, this is often the case.

Rev. N. A. C. I, SET answered 10 months ago

Also using ESP8266-12F:  I have the exact same problem on 2 different boards now.  power supply is solid.
Depending if I pull IO0 up or down I get boot code 5,7 or 7,7  followed by that exact same message:

ets Jan 8 2013,rst cause:2, boot mode:(5,7)
waiting for host

I’m not entire daft, I have 4 other boards up and running just fine.  One of the problem boards was also running just fine before.  Do I need to re-install the bootloader, if so, any instructions on doing so?
I have been using the Arduino IDE, just upgraded the ide and all of the libraries.  There are a lot of new settings that I have been unable to find the answers for.  Is that my problem?
Recently from Arduino IDE, if I try to upload anything I get the following error report:

Arduino: 1.8.9 (Windows 10), Board: “Generic ESP8266 Module, 80 MHz, Flash, Disabled, Basic SSL ciphers (lower ROM use), none, 26 MHz, 40MHz, DOUT (compatible), 4M (no SPIFFS), 2, nonos-sdk 2.2.1 (legacy), v2 Lower Memory, Disabled, None, All Flash Contents, 115200”
java.lang.NullPointerException
at cc.arduino.packages.uploaders.SerialUploader.burnBootloader(SerialUploader.java:329)
at processing.app.Editor.lambda$handleBurnBootloader$65(Editor.java:2384)
at java.lang.Thread.run(Thread.java:748)
Error while burning bootloader.

I fond this post about the boot modes:

boot spi mode from SPI: 7,7
boot spi mode from UART: 5,7

Thanks in advance for any tips