Fix SNR read.

River MacLeod · newAM · commit 7129f6246508 · 2025-04-20T11:30:51.000-07:00
It was giving wrong values, because the data from the radio is 2's compliment.
diff --git a/hal/src/subghz/packet_status.rs b/hal/src/subghz/packet_status.rs
@@ -232,7 +232,7 @@ impl LoRaPacketStatus {
     /// assert_eq!(pkt_status.snr_pkt().to_integer(), 10);
     /// ```
     pub fn snr_pkt(&self) -> Ratio<i16> {
-        Ratio::new_raw(i16::from(self.buf[2]), 4)
+        Ratio::new_raw(i16::from(self.buf[2] as i8), 4)
     }
 
     /// Estimation of RSSI level of the LoRa signal after despreading.

Original file line number	Diff line number	Diff line change
`@@ -232,7 +232,7 @@ impl LoRaPacketStatus {`
`232`	`232`	`/// assert_eq!(pkt_status.snr_pkt().to_integer(), 10);`
`233`	`233`	/// ```
`234`	`234`	`pub fn snr_pkt(&self) -> Ratio<i16> {`
`235`		`- Ratio::new_raw(i16::from(self.buf[2]), 4)`
	`235`	`+ Ratio::new_raw(i16::from(self.buf[2] as i8), 4)`
`236`	`236`	`}`
`237`	`237`
`238`	`238`	`/// Estimation of RSSI level of the LoRa signal after despreading.`