Function field 

pub const fn field(byte: u8, offset: u8, width: u8) -> u8

Reads the bits a register holds out of the byte it lives in.

Arguments

• byte - the byte the register was read from.
• offset - which bit the field starts at.
• width - how many bits it spans.

Returns

The field, shifted down to where it can be read as a number.

Examples

use pamoja_radios::sx1302::spi::field;

// The checksum status sits in the top four bits of the OTP status byte.
assert_eq!(field(0xa0, 4, 4), 0x0a);