ESP8266 Community Forum

- Mon Oct 03, 2016 9:02 am #56004 Hi

I am new to ESPs and have run into a bit of a problem. Hope you can help.

I used this cloud build service and selected the following modules:

bit, gpio, mdns, mqtt, net, node, pwm, sigma_delta, sntp, tmr, uart, wifi. It was build against the master branch.

I used the nodeMCU flasher to flash my ESP8266-01. I first downloaded the SDK patch 1.5.4.1 and extracted esp_init_data_default.bin from there. I then flashed the bin file at 0x7c000.
Then, I flashed the custom built file (float) at 0x00000 location. However, when I power it on, I get continuous junk data on UART. Same happens with the integer version also.

What am I doing wrong or am I missing some important step? Can the custom built be used for ESP-01?

Thanks a lot
Vivek

- Wed Oct 12, 2016 4:50 pm #56437 Hi,

I actually have the same problem as vivekb. When I flash my NodeMCU v2 (Amica) I get errors on the console.

Is there a specific way that the device should be flashed with custom firware?

- Sat Oct 15, 2016 6:49 am #56549

Is there a specific way that the device should be flashed with custom firware?

Study http://nodemcu.readthedocs.io/en/master ... g-firmware or http://nodemcu.readthedocs.io/en/dev/en ... g-firmware depending on whether you're on the master branch or on the dev branch.

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