stm32f4xx-hal VS examples

I would personally use the abstractions provided by the stm32f4xx-hal crate more. See https://github.com/stm32-rs/stm32f4xx-hal/tree/master/examples/ for examples.

For this project, the audio ended up being the biggest challenge. I spent a few days on-and-off working on it because it would stop working as I modified the PWM frequency. I was eventually able to track it down to a bug in the HAL and opened a PR accordingly: https://github.com/stm32-rs/stm32f4xx-hal/pull/555

For my specific issue, I'm using the stm32f4xx-hal library to control a bunch of RGB leds, each with a pwm output. Since I have to get pins and timers where I can find them, each component of the led is made by something like

At the time of writing this post, I noticed that if going with option 1 stated earlier that returns a PWMChannel can prove to be quite problematic. In navigating the documentation, the PWMChannel implementations do not include methods that allow to get and set the period of the peripheral. There is an issue that I submitted here for that.

Maybe check out this example from the stm324xx-hal repo?

Here is an example for stm32f407 (trivial to change to stm32f411) that gets random numbers from the rng peripheral and displays them on an ssd1306 display: https://github.com/stm32-rs/stm32f4xx-hal/blob/master/examples/rng-display.rs although this uses Rust, which you may or may not like. Arduino will have you covered as well, obviously.

A major benefit of Rust in embedded is how easy it is to use libraries. This example implements USB serial communication on an STM32 in under 80 lines. You add some libs and if it compiles it works.

I was taking a look at: https://github.com/actix/examples/blob/master/forms/multipart/src/main.rs

Using aws-sdk-s3 requires that tokio is installed. The above code was drafted from actix forms with multipart and s3 example with few modifications. There is a Client wrapper with two main endpoints: upload and delete_file. upload uses put_object_from_file to upload files to S3 and returns the uploaded files' URLs while delete_file deletes a file. We also created some type in backend/src/types/upload.rs:

I just figured it out. I had this: https://github.com/actix/examples/blob/master/databases/postgres/Cargo.toml as my toml, and somehow I removed the actix-web.workspace = true tag, but I didn't see the derive_more one. Removed it and that fixed it.

It doesn't need to be in another directory, creating separate folder for static content is common practice, it makes your project organization more clear and minimizes errors with overlapping and over-complicated routes/paths. Take a look at folder structure of the example project found from actix-files repository: https://github.com/actix/examples/tree/master/basics/static-files, it's great starting point where you can start extending it for your own needs.

There's an example of using MongoDB with actix-web here: https://github.com/actix/examples/tree/master/databases/mongodb

Sorry for the late response. Here is an example of how I implemented it using axum and rustls, and there is a similar example for actix-web here. It looks like the actix-web example follows much the same process for parsing the key and cert files and creating the rustls server config so hopefully the tls module in my example can provide some help.

As of now, I can register a new user by storing a username and hashed password, and then my login page is able to insert a user's ID into my Session per this example. The problem is that when I navigate from the login page after successfully inserting a new key, the Session doesn't persist to the next page.