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firmware: flip to idle on the daemon's {"ok": false} no-data beat #65

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firmware: flip to idle on the daemon's {"ok": false} no-data beat #65

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7 changes: 5 additions & 2 deletions firmware/src/ui.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -126,6 +126,7 @@ static lv_image_dsc_t battery_dscs[5]; // empty, low, medium, full, charging
static lv_obj_t* idle_group; // the "Zzz" idle screen
static uint32_t last_data_ms = 0; // lv_tick when the last valid usage update landed
static bool data_received = false; // any valid update since boot
static bool data_ok = true; // last payload's ok flag; a {"ok":false} beat = "no fresh data"
static int view_state = -1; // -1 unknown / 0 pair / 1 idle / 2 usage
static const uint32_t DATA_FRESH_MS = 90000; // usage counts as "live" within this window (daemon sends ~60s)

Expand Down Expand Up @@ -431,7 +432,9 @@ void ui_init(void) {

void ui_update(const UsageData* data) {
if (!data->valid) return;
last_data_ms = lv_tick_get(); // a valid usage update just landed → dot goes green
data_ok = data->ok;
if (!data->ok) return; // a {"ok":false} "no data" beat → fall through to idle, keep last numbers
last_data_ms = lv_tick_get(); // a real usage update just landed
data_received = true;

int s_pct = (int)(data->session_pct + 0.5f);
Expand Down Expand Up @@ -462,7 +465,7 @@ static void update_view_state(void) {
int v;
if (!s_ble_connected) {
v = 0; // pairing hint
} else if (data_received && (lv_tick_get() - last_data_ms) < DATA_FRESH_MS) {
} else if (data_received && data_ok && (lv_tick_get() - last_data_ms) < DATA_FRESH_MS) {
v = 2; // live usage
} else {
v = 1; // idle / Zzz
Expand Down