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LoRa complication: show TX count in beacon mode, noise floor as fallback

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The complication was always "---" in beacon mode because last_rssi
only updates on packet receive. Now shows:
- TX:N (packet count) when beaconing
- Noise floor (dim) when radio is listening but no packets received
- RSSI (amber) when a packet is actually received

Signal graph records noise floor every 5s as fallback when no RSSI
is available, so it shows the RF environment over time.
This commit is contained in:
GlassOnTin 2026-04-07 12:21:04 +01:00
commit b362e25759
1 changed files with 31 additions and 19 deletions
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48
Gui.h
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@ -945,14 +945,24 @@ static void gui_update_data() {
}
lv_obj_align(gui_batt_label, LV_ALIGN_TOP_RIGHT, -GUI_PAD, GUI_STATUS_Y);
// LoRa complication — dim when disabled, warn when no IFAC
// LoRa complication — show RSSI if receiving, TX count if beaconing, noise floor otherwise
if (radio_online) {
if (last_rssi > -292) {
// Received a packet — show RSSI
lv_label_set_text_fmt(gui_lora_value, "%d", last_rssi);
lv_obj_set_style_text_color(gui_lora_value, lv_color_hex(GUI_COL_AMBER), 0);
} else if (stat_tx > 0) {
// Beacon mode — show TX count
lv_label_set_text_fmt(gui_lora_value, "TX:%lu", stat_tx);
lv_obj_set_style_text_color(gui_lora_value, lv_color_hex(GUI_COL_AMBER), 0);
} else if (noise_floor > -292) {
// Radio listening — show noise floor
lv_label_set_text_fmt(gui_lora_value, "%d", noise_floor);
lv_obj_set_style_text_color(gui_lora_value, lv_color_hex(GUI_COL_DIM), 0);
} else {
lv_label_set_text(gui_lora_value, "---");
lv_obj_set_style_text_color(gui_lora_value, lv_color_hex(GUI_COL_DIM), 0);
}
lv_obj_set_style_text_color(gui_lora_value, lv_color_hex(GUI_COL_AMBER), 0);
lv_label_set_text(gui_lora_label, ifac_configured ? "LoRa" : "NO KEY");
lv_obj_set_style_text_color(gui_lora_label,
lv_color_hex(ifac_configured ? GUI_COL_DIM : GUI_COL_RED), 0);
@ -1069,36 +1079,38 @@ static void gui_update_data() {
// Signal strength view — record RSSI and update graph
if (gui_signal_cont) {
// Record RSSI when a new packet is received
// Record signal level periodically (RSSI if available, noise floor otherwise)
static int16_t prev_rssi = -292;
static uint32_t last_rssi_record = 0;
if (last_rssi != prev_rssi || (radio_online && millis() - last_rssi_record > 5000)) {
if (last_rssi > -292 && radio_online) {
rssi_history[rssi_history_idx] = last_rssi;
rssi_history_idx = (rssi_history_idx + 1) % RSSI_HISTORY_LEN;
if (rssi_history_count < RSSI_HISTORY_LEN) rssi_history_count++;
int16_t current_signal = (last_rssi > -292) ? last_rssi : noise_floor;
if (radio_online && millis() - last_rssi_record > 5000 && current_signal > -292) {
rssi_history[rssi_history_idx] = current_signal;
rssi_history_idx = (rssi_history_idx + 1) % RSSI_HISTORY_LEN;
if (rssi_history_count < RSSI_HISTORY_LEN) rssi_history_count++;
// Record GPS+RSSI for direction finding
#if HAS_GPS == true
if (gps_has_fix) {
dir_history[dir_history_idx] = { gps_lat, gps_lon, last_rssi };
dir_history_idx = (dir_history_idx + 1) % DIR_HISTORY_LEN;
if (dir_history_count < DIR_HISTORY_LEN) dir_history_count++;
}
#endif
// Record GPS+RSSI for direction finding (only with real RSSI, not noise floor)
#if HAS_GPS == true
if (gps_has_fix && last_rssi > -292) {
dir_history[dir_history_idx] = { gps_lat, gps_lon, last_rssi };
dir_history_idx = (dir_history_idx + 1) % DIR_HISTORY_LEN;
if (dir_history_count < DIR_HISTORY_LEN) dir_history_count++;
}
prev_rssi = last_rssi;
#endif
last_rssi_record = millis();
}
// Update signal view when visible
if (gui_show_signal && rssi_history_count > 0) {
// Current RSSI display
// Current signal display
if (last_rssi > -292 && radio_online) {
lv_label_set_text_fmt(gui_signal_rssi, "%d dBm", last_rssi);
uint32_t rssi_col = (last_rssi > -80) ? GUI_COL_GREEN :
(last_rssi > -100) ? GUI_COL_AMBER : GUI_COL_RED;
lv_obj_set_style_text_color(gui_signal_rssi, lv_color_hex(rssi_col), 0);
} else if (noise_floor > -292 && radio_online) {
lv_label_set_text_fmt(gui_signal_rssi, "floor %d", noise_floor);
lv_obj_set_style_text_color(gui_signal_rssi, lv_color_hex(GUI_COL_DIM), 0);
} else {
lv_label_set_text(gui_signal_rssi, "no signal");
lv_obj_set_style_text_color(gui_signal_rssi, lv_color_hex(GUI_COL_DIM), 0);