My advice is to read the board and MCU datasheet. Check MCU's peripherals, and how they can be used in your application. Some MCU's have a PPI (Programmable Peripheral Interconnect) it is clever to use it, as peripherals can operate independently together from the processor, especially combined with direct memory access. Learn bitwise operations as you'll need it to configure the peripheral's registers. Use a logic analyzer to confirm the bitstream to pinpoint errors.
Lately I started experimenting with radios. It is difficult. Let me know if someone has a good guide they read.
Studying electrical engineering I've learned an important concept: Everything is relative. Ex: to measure the voltage, we need a reference to measure it against. I think the brain works very much the same way. Every perception of reality is processed with respect to some reference.
Lately I started experimenting with radios. It is difficult. Let me know if someone has a good guide they read.