chore: release v0.22.9

internal/powergenius/powergenius.go

@@ -9,6 +9,7 @@ package powergenius
 import (
 	"bufio"
 	"fmt"
+	"math"
 	"net"
 	"strconv"
 	"strings"
@@ -36,6 +37,16 @@ type Status struct {
 	FanMode     string  `json:"fan_mode,omitempty"` // STANDARD / CONTEST / BROADCAST
 	Temperature float64 `json:"temperature"`
 	Operate     bool    `json:"operate"` // OPERATE vs STANDBY (optimistic until the amp reports it)
+
+	// Live power, read straight from the amplifier's own status frame rather
+	// than sampled off the FlexRadio meter stream. PeakW is the amp's own peak
+	// detector: a poll catches one instant of the envelope, so the plain forward
+	// figure lands between syllables as often as on a peak.
+	FwdW   float64 `json:"fwd_w"`   // forward power [W] (the frame reports dBm)
+	PeakW  float64 `json:"peak_w"`  // peak forward power [W]
+	Vswr   float64 `json:"vswr"`    // VSWR, derived from the frame's return loss in dB
+	Id     float64 `json:"id"`      // drain current [A]
+	PeakId float64 `json:"peak_id"` // peak drain current [A]
 }
 
 type Client struct {
@@ -226,9 +237,9 @@ func (c *Client) parse(resp string) {
 	c.statusMu.Lock()
 	c.status.Connected = true
 	c.status.LastError = ""
-	// Log each DISTINCT status payload once: the PGXL's field set isn't fully
-	// documented, so this is how we learn the real key for e.g. operate/standby.
-	if data != c.lastRaw {
+	// One raw frame per session is enough to learn the field set — the frames
+	// carry live meter values, so "log on change" logged every frame.
+	if c.lastRaw == "" {
 		c.lastRaw = data
 		applog.Printf("pgxl: status raw=%q", data)
 	}
@@ -252,7 +263,50 @@ func (c *Client) parse(resp string) {
 			c.status.FanMode = dev
 		case "temp":
 			c.status.Temperature, _ = strconv.ParseFloat(kv[1], 64)
+		case "fwd":
+			if v, err := strconv.ParseFloat(kv[1], 64); err == nil {
+				c.status.FwdW = dbmToWatts(v)
+			}
+		case "peakfwd":
+			if v, err := strconv.ParseFloat(kv[1], 64); err == nil {
+				c.status.PeakW = dbmToWatts(v)
+			}
+		case "swr":
+			if v, err := strconv.ParseFloat(kv[1], 64); err == nil {
+				c.status.Vswr = returnLossToVswr(v)
+			}
+		case "id":
+			c.status.Id, _ = strconv.ParseFloat(kv[1], 64)
+		case "peakid":
+			c.status.PeakId, _ = strconv.ParseFloat(kv[1], 64)
 		}
 	}
 	c.statusMu.Unlock()
 }
+
+// dbmToWatts converts a power reading in dBm to watts (0 dBm = 1 mW). The amp
+// reports power that way — "fwd=60.5" is 1122 W, not 60 W.
+func dbmToWatts(dbm float64) float64 {
+	if dbm <= 0 {
+		return 0
+	}
+	return math.Pow(10, (dbm-30)/10)
+}
+
+// returnLossToVswr converts the amp's "swr" field — a return loss in dB, sent
+// negative for a good match — into the VSWR ratio an operator reads.
+func returnLossToVswr(swrDb float64) float64 {
+	rl := math.Abs(swrDb)
+	if rl <= 0 {
+		return 0
+	}
+	rho := math.Pow(10, -rl/20)
+	if rho >= 1 {
+		return 0
+	}
+	vswr := (1 + rho) / (1 - rho)
+	if vswr > 99.9 || math.IsInf(vswr, 0) || math.IsNaN(vswr) {
+		return 0
+	}
+	return vswr
+}