lvgl_smoke.tc

lvgl_smoke.tc — LVGL Phase 0 smoke test (requires firmware built with USE_TINYC_LVGL)

Source on GitHub

// lvgl_smoke.tc — LVGL Phase 0 smoke test (requires firmware built with USE_TINYC_LVGL)
//
// Brings LVGL up on the device's panel via lvglInit() and parks, so the firmware's
// FUNC_LOOP keeps driving lv_timer_handler(). No widgets yet (Phase 0) — success looks
// like: the screen clears to the LVGL default background, the slot stays running with
// error "OK" in /tc_api, heap is stable, and the device does NOT reboot.
//
// lvglInit()   -> 1 if LVGL is active (idempotent start_lvgl(nullptr))
// lvglActive() -> 1 while LVGL is running

int main() {
    int ok  = lvglInit();      // lv_init + display flush->renderer + GT911/touch indev + tick
    int act = lvglActive();    // expect 1

    // Park so /tc_api shows the slot running and LVGL keeps rendering on the panel.
    // (lv_task_handler runs firmware-side every loop once lvgl_glue exists.)
    while (1) {
        delay(250);
    }
    return ok + act;           // unreachable; keeps both reads "used"
}