Update EasyESP via OTA from CLI

[mackowiakp]

I have several nodeMCU with EasyEsp in distant places. All of them works as "remote sensors" with local Raspberry Pi. Is any possibility to update EasyESP via OTA using Raspbian installed on RPi using RPi CLI, not from EasyESP WEB interface?

[TD-er]

If this Pi is connected to the serial port lines, you could use ESPtool.py.
Only thing is, when you run that kind of update, you have to reset the node by either press reset, or power down. Software reset will not work after flash via serial.

Other upgrade options can be to create a POST request (using curl???) and upload the firmware.

There is also an option to enable an OTA service on the ESP nodes. I've seen the option in PlatformIO and parts of it in the code, but I haven't used it myself.

[mackowiakp]

I can reset remotely all nodeMCU via remote power on/off of common power supply unit. But very interesting for me is possibility to use curl for FW update from local RPi to all local nodeMCU. Be so kind to tell me how can I do it?

[grovkillen]

Here's a good start. https://ec.haxx.se/usingcurl-uploads.html

[TD-er]

You may have to look at the traffic to the ESP node when performing an update, to see if it does a POST or a PUT.
I just assumed it is a POST, since it is a reply to filling in a form, but I am not entirely sure how it is done.