Clean up comments on kiss noise floor changes.

docs/kiss_modem_protocol.md

@@ -28,8 +28,6 @@ Maximum unescaped frame size: 512 bytes.
 
 ## Commands
 
-Command and response codes below are taken from `examples/kiss_modem/KissModem.h` and the switch in `KissModem::processFrame()`.
-
 ### Request Commands (Host → Modem)
 
 | Command | Value | Data |
@@ -129,7 +127,7 @@ Response to `CMD_GET_NOISE_FLOOR` (0x13). Little-endian.
 |--------------|------|--------------------------------|
 | Noise floor  | 2    | int16_t, dBm (signed), e.g. -120 |
 
-The modem recalibrates the noise floor periodically (every 2 s) from RX samples when idle. The receiver AGC is also reset periodically (every 30 s) so RSSI and noise floor do not drift to the minimum (-120). Typical range after calibration is about -120 to -90 dBm. Values may be 0 or briefly stale until the radio has been in receive mode long enough to collect 64 samples.
+The modem recalibrates the noise floor every two seconds with an AGC reset every 30 seconds.
 
 ### Stats (RESP_STATS)
 

examples/kiss_modem/main.cpp

@@ -12,8 +12,8 @@
   #include <SPIFFS.h>
 #endif
 
-#define NOISE_FLOOR_CALIB_INTERVAL_MS  2000   // match Dispatcher default
-#define AGC_RESET_INTERVAL_MS         30000  // periodic RX restart so AGC doesn't drift (repeater uses same via prefs)
+#define NOISE_FLOOR_CALIB_INTERVAL_MS  2000
+#define AGC_RESET_INTERVAL_MS         30000
 
 StdRNG rng;
 mesh::LocalIdentity identity;
@@ -100,11 +100,9 @@ void loop() {
   uint8_t packet[KISS_MAX_PACKET_SIZE];
   uint16_t len;
 
-  // Match Dispatcher order: noise floor calib + loop() first, so we never sample RSSI in the same
-  // iteration as startReceive() (AGC reset -> recvRaw below). Sampling right after startReceive()
-  // can yield settling/cold RSSI and drive the floor toward -120.
+  // trigger noise floor calibration
   if ((uint32_t)(millis() - next_noise_floor_calib_ms) >= NOISE_FLOOR_CALIB_INTERVAL_MS) {
-    radio_driver.triggerNoiseFloorCalibrate(0);   // 0 = no interference threshold (KISS has no prefs)
+    radio_driver.triggerNoiseFloorCalibrate(0);
     next_noise_floor_calib_ms = millis();
   }
   radio_driver.loop();
@@ -119,7 +117,7 @@ void loop() {
   }
 
   if ((uint32_t)(millis() - next_agc_reset_ms) >= AGC_RESET_INTERVAL_MS) {
-    radio_driver.resetAGC();   // next recvRaw() will startReceive() and reset AGC so RSSI/noise floor don't stick at -120
+    radio_driver.resetAGC();
     next_agc_reset_ms = millis();
   }
   uint8_t rx_buf[256];