added nrf24l01 module code

[freaksplayground]

Module: NRF24L01

How to use:

1. Setup Pins:
   • SPI - SPI (frequency between 1_000_000 to 4_000_000)
   • CSN - PIN Output
   • CE - PIN Output
   • IRQ - PIN InputPullup
2. Create SPI Config (default available)
3. Create Config
4. Create New Module

Establishing connection:

Make sure all conditions are met:

• sender TX_ADDR == receiver RX_ADDR_P0 (only one available for now)
• sender RF_CH == receiver RF_CH
• sender Bandwidth == receiver Bandwidth
• sender PowerOutput == receiver PowerOutput (could be different, just makes stuff a lot easier)
• sender PackageSize == receiver PackageSize

Sending Data

• A: Send(data) where data max length = 31 (if packagesize == 32)
• B: WritePayload(data) but keep first index clear
• C: WriteMultiRegister(W_TX_Payload,data) if you want to control everything

Reading Data

• (OPTIONAL) Check HasIRQ() (for SPI performance)
• HasData() to check FIFO values
• A: ReadPayload() (opinionated message framing with first bit being message length)
• B: ReadMultiRegister(R_RX_PAYLOAD) (raw data for custom framing)

Needed one, so I wrote one. Maybe this fits here.
If you have suggestions, you know what to do. ;)