ESP8266 Developer Zone

Re: My new ESP-WROOM-02 cannot boot up from flash

2015-06-15T11:27:27+08:00

Thanks. I finally found the wrong state of my hardware. Now it's ok.

Statistics: Posted by icomet — Mon Jun 15, 2015 11:27 am

Re: My new ESP-WROOM-02 cannot boot up from flash

2015-06-15T10:47:46+08:00

Hi,

It seems that your hardware settings is not correct.

While downloading, it is MTDO: 0, GPIO0: 0, GPIO2: 1

While boot up from flash, it is MTDO: 0, GPIO0: 1, GPIO2: 1

If your problem is still unsolved, please take a picture of your hardware board, we will help you check it.

Statistics: Posted by ESP_Faye — Mon Jun 15, 2015 10:47 am

My new ESP-WROOM-02 cannot boot up from flash

2015-06-13T11:43:38+08:00

Hi,
I want to use the example in IOT Sdk1.1.1 to start. I copied souce code from /examples/IoT_Demo to /app without any modification, and use 1,1,2,0,4 for step 1-5 to generate bin;
My flash tool configurations as below:

But after I power off, switch to flash boot mode, power on, I get no log from UART0 and UART1; and switch back to UART downloading mode, I got log "ets Jan 8 2013,rst cause:1, boot mode:(1,7)";

Need I to modify source code of IoT demo in order to run on my hardware? or there is something I did wrongly?
Thanks.

Statistics: Posted by icomet — Sat Jun 13, 2015 11:43 am