LoRA | Code for loralib, an implementation of "LoRA: Low-Rank Adaptation of Large Language Models" | Natural Language Processing library

That's fairly easy to do with the struct module:

In your case, you are decoding two doubles, so the format is dd.

The issue is with this commented line,

Is your mentioned path (../../wwwroot/assets/home-bg.jpg) correct? because image won't be rendered if path is incorrect, and the background color becomes grey because of the classname mentioned.

While using Navigator.of(context), Flutter goes through the ancestors in the widget tree to find the nearest Navigator.

Now, you actually don't spcifically provide any Navigator widget in the tree, so where is your Navigator coming from ?

That's the MaterialApp.

Now, you have your main MaterialApp at the root.

But if you check your btInit widget, you have declared another MaterialApp in it. So when you call, pushNamed('todoscreen'), it is actually getting a hold of the Navigator from the MaterialApp of your btInit widget and not the main one.

Since, you only defined onGenerateRoute on the main MaterialApp, it is unable to resolve a request for the todoscreen route name.

Remove the MaterialApp inside your btInit widget and this should be resolved.

generateRoute function does not know that your arguments are of type ScreenArguments, you should define that explicitly:

You can use line-height.

From MDN:

The line-height CSS property sets the height of a line box. It's commonly used to set the distance between lines of text. On block-level elements, it specifies the minimum height of line boxes within the element. On non-replaced inline elements, it specifies the height that is used to calculate line box height.

Code:

Communication does depend on matching the various parameters. With help from the developer of the pico-tracker code I got a pico sending messages to an ESP32 Lolin32 Lite which is using the Arduino LoRa library.

On the pico:

As Deceze has commented, if the data is corrupted at source there is no guarantee that you can undo the corruption. However, using the data you provided we can make some progress.

Firstly, the vast majority of the strings in your list can be fixed by encoding as latin-1 and then decoding as UTF-8.

or implementing Class B, Does it need to change Lora module registers?

Well, yes. It needs to do a RX window from time to time.

or differences between classes are just between the time they communicate to each other?

Generally yes. Almost all implementation of power-saving methods in wireless communication may be reduced to difference in "just the time between they communicate" - this is an oversimplification. But generally, yes, classes manipulate the times when downlink are possible from gateway to beacon.

Class A can send message anytime and it receives messages only right after sending. Class B is class A with periodic synchronized receiving windows. And Class C can receive messages anytime - keeps RX always open.

From lora-allience.org/about-lorawan:

Class A – Lowest power, bi-directional end-devices:

The default class which must be supported by all LoRaWAN end-devices, class A communication is always initiated by the end-device and is fully asynchronous. Each uplink transmission can be sent at any time and is followed by two short downlink windows, giving the opportunity for bi-directional communication, or network control commands if needed. This is an ALOHA type of protocol. The end-device is able to enter low-power sleep mode for as long as defined by its own application: there is no network requirement for periodic wake-ups. This makes class A the lowest power operating mode, while still allowing uplink communication at any time. Because downlink communication must always follow an uplink transmission with a schedule defined by the end-device application, downlink communication must be buffered at the network server until the next uplink event.

Class B – Bi-directional end-devices with deterministic downlink latency:

In addition to the class A initiated receive windows, class B devices are synchronised to the network using periodic beacons, and open downlink ‘ping slots’ at scheduled times. This provides the network the ability to send downlink communications with a deterministic latency, but at the expense of some additional power consumption in the end-device. The latency is programmable up to 128 seconds to suit different applications, and the additional power consumption is low enough to still be valid for battery powered applications.

Class C – Lowest latency, bi-directional end-devices:

In addition to the class A structure of uplink followed by two downlink windows, class C further reduces latency on the downlink by keeping the receiver of the end-device open at all times that the device is not transmitting (half duplex). Based on this, the network server can initiate a downlink transmission at any time on the assumption that the end-device receiver is open, so no latency. The compromise is the power drain of the receiver (up to ~50mW) and so class C is suitable for applications where continuous power is available. For battery powered devices, temporary mode switching between classes A & C is possible, and is useful for intermittent tasks such as firmware over-the-air updates.