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Changed RSSI percentage strength function to return the correct percentage. Now takes into account min and max RSSIs. Could potentially use some sort of Logarithmic scale to actually determine the correct RSSI

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Luke Else 2023-06-19 22:38:05 +01:00
parent 63b6627867
commit 8b2abd2f8d
1 changed files with 14 additions and 15 deletions
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29
src/main.rs
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@ -24,26 +24,25 @@ fn main() -> Result<(), EspError> {
loop {
//Synchronously perform a scan and return nearby APs
let ap_scan_res = wifi.scan()?;
let nets = ap_scan_res.into_iter().map(|ap| (ap.ssid, ap.signal_strength, rssi_to_percentage(ap.signal_strength)));
println!("\n\n=======================================");
for net in ap_scan_res.into_iter().map(|ap| (ap.ssid, ap.signal_strength, rssi_to_percentage(ap.signal_strength))) {
println!("{}: {}dBm, {:.2}%", net.0, net.1, net.2);
for net in nets {
println!("{}: {}dBm, {:.2}% Signal Strength", net.0, net.1, net.2);
}
println!("=======================================");
}
}
fn rssi_to_percentage(signal_strength: i8) -> f32 {
let max_i8 = std::u8::MAX as f32;
let percentage = (((signal_strength as f32) / max_i8) + 0.5) * 100.0;
fn rssi_to_percentage(rssi: i8) -> f32 {
const MIN_RSSI: i8 = -100; // Minimum RSSI value in dBm
const MAX_RSSI: i8 = -5; // Maximum RSSI value in dBm
// Clamp the RSSI value within the specified range
let clamped_rssi = rssi.min(MAX_RSSI).max(MIN_RSSI);
// Convert the clamped RSSI to a percentage
let percentage = 100.0 * (clamped_rssi - MIN_RSSI) as f32 / (MAX_RSSI - MIN_RSSI) as f32;
//Return the percentage RSSI
percentage
}
mod tests {
#[cfg(test)]
#[test]
fn rssi_to_percentage_test() {
use super::rssi_to_percentage;
println!("{}", rssi_to_percentage(0));
assert_eq!(rssi_to_percentage(0), 50.0);
}
}