ESP8266 Community Forum

- Sun Oct 09, 2016 4:38 pm #56290 I have a similar issue I can use this firmware from last year:

Code: Select allnode.restart()
> ÆåÖcþŽD
NodeMCU custom build by frightanic.com
   branch: master
   commit: f4fc3b95a86ec98c6de0cfb0c1c424e343297420
   SSL: true
   modules: node,file,gpio,wifi,pwm,spi,tmr,uart,bit,mqtt,ws2812
    built on: 2015-09-07 20:06
  powered by Lua 5.1.4

For any of the new builds I cannot get it to work. I have built 7 or 8 builds from the cloud tool, all of them produce scrolling errors like this. I have uploaded several ways, formatted, tried everything....

Code: Select all ets Jan  8 2013,rst cause:2, boot mode:(3,7)

load 0x40100000, len 24660, room 16
tail 4
chksum 0xe7
load 0x3ffe8000, len 2268, room 4
tail 8
chksum 0xe2
load 0x3ffe88dc, len 8, room 0
tail 8
chksum 0x37
csum 0x37
rf_cal[0] !=0x05,is 0xFF

- Tue Oct 11, 2016 8:00 am #56364

For any of the new builds I cannot get it to work. I have built 7 or 8 builds from the cloud tool, all of them produce scrolling errors like this. I have uploaded several ways, formatted, tried everything....

The cloud builder emails point you to the FAQ which tells you to study http://nodemcu.readthedocs.io/en/master ... g-firmware.

Code: Select allrf_cal[0] !=0x05,is 0xFF

This means that the esp init data is not where the Espressif SDK expects it (memory address). Make sure you got the 'write_flash' parameters right and flash the correct init data as per the documentation.

P.S. if you get a build from the dev branch you only have to erase flash and let the firmware worry about the init data: http://nodemcu.readthedocs.io/en/dev/en ... g-firmware

https://frightanic.com/
https://nodemcu-build.com/
https://github.com/marcelstoer/nodemcu-pyflasher

- Thu Oct 20, 2016 9:05 am #56837 Hi,

I had the same problem and was already wondering whether the 1.x firmware does even run on a devkit 0.9. After flashing espinit, everthing was fine.

Given that the SDK does write the init itself in case it isn't there, I wonder why the ESP8266Flasher doesn't simply erase that area when any firmware is flashed.

Regards

Heribert