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frequency_word

pamoja_radios::sx127x::config

Function frequency_word 

Source 
pub const fn frequency_word(frequency_hz: u32) -> u32
Expand description

Returns the 24-bit RegFrf word for a frequency.

The datasheet defines the carrier as the word times the crystal frequency over 2^19, a step of 61.035 Hz. The word is rounded to the nearest step.

§Arguments

  • frequency_hz - the carrier frequency in hertz.

§Returns

The frequency word.

§Examples

use pamoja_radios::sx127x::config::frequency_word;

// 434 MHz is the RegFrf reset value the datasheet gives.
assert_eq!(frequency_word(434_000_000), 0x6C_8000);
assert_eq!(frequency_word(868_100_000), 0xD9_0666);
assert_eq!(frequency_word(915_000_000), 0xE4_C000);