ESP8266 Community Forum

- Sun Aug 16, 2015 1:08 pm #26197 Looks like the nodemcu firmware programmer can only make downloads to the flash of an ESP8266
Any possibility to make it the other way round? Read out an area of the flash into a hex-file?

regards/brutzler

my ESP8266: ESP-01 V2 / ESP-12E (NodeMCU)
ESP8266 Arduino add-on
Arduino IDE 1.6.5

- Mon Aug 17, 2015 3:19 am #26245 Look at the README for esptool. There is a dump_mem option.

Please see my Developer FAQ for Q&A on nodeMCU Lua before asking a question here that's already been answered. This and the other official documentation should be your first reference for developing Lua Apps

- Mon Aug 17, 2015 9:24 am #26268 Yes, with esptool.py, you can create backups of firmware before overwriting them.

@brutzler, is it because you want to backup the SPIFFS area we've discussed in other thread ?
Of course, the backup can be done. But "mkspiffs" wont be able to unpack files until new functionalities are added.

- Mon Aug 17, 2015 1:24 pm #26281

@brutzler, is it because you want to backup the SPIFFS area we've discussed in other thread?

Hi Martin,
partly yes. I like the idea, to make the content of a flash-area visible. To control (from different side) what happened.
Not only for SPIFFS.
Looks like I have to install Python on my Windows7-PC to upread flash areas.
Or use my Dump-Sketch, I talked in the ESP/Arduino-Thread.

I am a little spoiled from the myAVR-ProgTool. This is a combination of Download/Upread with Hex-Editor.
Was in hope that the NodeMcu firmware programmer could do similiar.

my ESP8266: ESP-01 V2 / ESP-12E (NodeMCU)
ESP8266 Arduino add-on
Arduino IDE 1.6.5