feat(ui-new): Tools > Satellites -- sky plot and signal bars on the 128x64 OLED

Two views, swapped with left / right: a polar sky plot (filled = used in the fix, hollow = tracked, a pixel = no signal) beside fix, used / in view, HDOP, PDOP and time to first fix; and a signal bar per satellite (used first, a dotted 30 dB-Hz line) under per-constellation counts. The GPS stays awake while it's open. Data from GpsSky (-D GPS_SKYVIEW, now on the L1 solo build). The simulator's made-up sky moves from the L2's GpsScreen into helpers/sensors/GpsSkySim.h, so both sims show it. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-11-02 19:02:00 +00:00 · 2026-09-28 16:33:41 +02:00
parent e82cedaf23
commit 95c4c093f0
8 changed files with 302 additions and 61 deletions
@@ -0,0 +1,69 @@
+#pragma once
+// The browser simulator has no GPS receiver: a made-up sky (GPS, BeiDou and
+// GLONASS satellites drifting slowly round), sent through the real GpsSky
+// parser as NMEA once a second. The fix comes 20 s after the first ask.
+// Both UIs' satellite screens read it through gpsSkySim().
+
+#include "GpsSky.h"
+#include <math.h>
+#include <stdio.h>
+
+static GpsSky s_gps_sim_sky;
+static void gpsSimSentence(const char* body) {
+  uint8_t cs = 0;
+  for (const char* p = body; *p; p++) cs ^= (uint8_t)*p;
+  char line[120];
+  snprintf(line, sizeof(line), "$%s*%02X\r\n", body, cs);
+  for (const char* p = line; *p; p++) s_gps_sim_sky.feed(*p);
+}
+static void gpsSimFeed() {
+  static uint32_t s_next = 0, s_t0 = 0;
+  uint32_t now = millis();
+  if (!s_t0) s_t0 = now;
+  if ((int32_t)(now - s_next) < 0) return;
+  s_next = now + 1000;
+  struct SimSat { const char* talker; int prn, elev, az, snr; };
+  static const SimSat SATS[] = {
+    { "GP", 2, 72, 40, 44 }, { "GP", 5, 48, 120, 41 }, { "GP", 12, 31, 205, 36 }, { "GP", 15, 18, 290, 27 },
+    { "GP", 20, 63, 310, 43 }, { "GP", 25, 9, 75, 18 }, { "GP", 29, 22, 160, 31 }, { "GP", 44, 30, 190, 33 },
+    { "BD", 7, 55, 250, 38 }, { "BD", 10, 40, 20, 35 }, { "BD", 23, 12, 140, -1 }, { "BD", 37, 67, 95, 42 },
+    { "GL", 71, 35, 330, 29 }, { "GL", 72, 50, 260, 34 }, { "GL", 80, 6, 30, -1 },
+  };
+  const int N = sizeof(SATS) / sizeof(SATS[0]);
+  float t = (now - s_t0) / 1000.0f;
+  bool fix = t > 20;
+  char b[110];
+  for (const char* talker : { "GP", "BD", "GL" }) {
+    const SimSat* mine[8];
+    int k = 0;
+    for (int i = 0; i < N; i++) if (!strcmp(SATS[i].talker, talker)) mine[k++] = &SATS[i];
+    int msgs = (k + 3) / 4;
+    for (int m = 0; m < msgs; m++) {
+      int o = snprintf(b, sizeof(b), "%sGSV,%d,%d,%02d", talker, msgs, m + 1, k);
+      for (int j = m * 4; j < k && j < m * 4 + 4; j++) {
+        const SimSat& s = *mine[j];
+        int az = ((int)(s.az + t / 6) % 360);
+        int snr = s.snr < 0 ? -1 : s.snr - (fix ? 0 : 8) + (int)(3 * sinf(t / 3 + s.prn));
+        if (snr >= 0) o += snprintf(b + o, sizeof(b) - o, ",%02d,%02d,%03d,%02d", s.prn, s.elev, az, snr);
+        else o += snprintf(b + o, sizeof(b) - o, ",%02d,%02d,%03d,", s.prn, s.elev, az);
+      }
+      gpsSimSentence(b);
+    }
+  }
+  if (fix) {
+    gpsSimSentence("GNGSA,A,3,02,05,12,15,20,29,,,,,,,1.6,0.9,1.3,1");
+    gpsSimSentence("GNGSA,A,3,07,10,37,,,,,,,,,,1.6,0.9,1.3,4");
+    gpsSimSentence("GNGSA,A,3,72,,,,,,,,,,,,1.6,0.9,1.3,2");
+    gpsSimSentence("GNGGA,120000.00,5213.0000,N,02100.0000,E,1,10,0.9,112.4,M,34.5,M,,");
+    gpsSimSentence("GNRMC,120000.00,A,5213.0000,N,02100.0000,E,0.4,87.0,260926,,,A");
+  } else {
+    gpsSimSentence("GNGSA,A,1,,,,,,,,,,,,,99.9,99.9,99.9,1");
+    gpsSimSentence("GNGGA,120000.00,,,,,0,00,99.9,,,,,,");
+    gpsSimSentence("GNRMC,120000.00,V,,,,,,,260926,,,N");
+  }
+}
+
+static GpsSky* gpsSkySim() {
+  gpsSimFeed();
+  return &s_gps_sim_sky;
+}