mirror of
https://github.com/ferrous-systems/embedded-trainings-2020.git
synced 2024-06-16 12:10:35 +00:00
37 lines
1.3 KiB
Markdown
37 lines
1.3 KiB
Markdown
# BSC Exercise
|
|
|
|
In this exercise you will learn how to write a board support crate.
|
|
The bsc template will already contain the led and timer implementation.
|
|
The radio and USB/Power implementations will be deleted, because that just takes up unnecessary space and adds to confusion.
|
|
|
|
|
|
## Learning goals
|
|
* implement buttons functionality
|
|
* uarte implementation
|
|
* impl blocks, associated functions, methods
|
|
* generate docs!
|
|
|
|
|
|
## Steps
|
|
### Write a button implementation
|
|
* add field in the board struct
|
|
* add struct for all buttons
|
|
* add struct for the single button
|
|
|
|
* Read docs, section 8.7 for info about pins and pin configuration
|
|
* add button bring up to board init
|
|
|
|
* add doc lines every where!
|
|
* add methods in impl block:
|
|
* detect button push
|
|
* debounce button function? like in knurling session, requires implementation of a second timer, just for this?
|
|
|
|
### Write Uarte implementation
|
|
* add field to the board struct
|
|
* add struct for the instance, how to figure out what the type of the inner field is
|
|
* create instance in init, add baudrate, parity etc.
|
|
* add to instantiation of board struct
|
|
* impl fmt::Write for the Uarte struct, simple write does not work because of dma
|
|
* example code with button is not a good idea for the simple button implementation.
|
|
|
|
I think this is plenty for an hour. |