[FEATURE REQUEST] Mini - use a local time server

[Gisi0]

Printer type - MINI
Optional upgrades - Filament Runout Sensor

Describe the expected functionality
Normally my mini has no connection to the internet, so it happened, that I have no actual time on it.
Please make it possible to set a local time server.

Thank you, great work on the mini
Gisi

[nvtkaszpir]

Right now the address is hardcoded to 195.113.144.238

Prusa-Firmware-Buddy/lib/WUI/sntp/sntp_client.c

Line 13 in c2d7108

if (ipaddr_aton("195.113.144.238", &ntp_server)) {

Thankfully you can use destination NAT rule on the router firewall to redirect destination address 195.113.144.238 (which is tak.cesnet.cz) your preferred IP address which is serving time.

For example for Mikrotik assuming your NTP is on 10.0.0.3 then it would be something like below:

/ip firewall nat add chain=dstnat action=dst-nat dst-address=195.113.144.238 to-addresses=10.0.0.3

Otherwise the printer itself should just take NTP servers from DHCP, that would be preferable way to do it.

[bkerler]

This PR should make it much more easier and adds support for a local time server: #3679 :)

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