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Qt Quick Ultralite freertos_multitask 示例

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#include "led_thread.h" #include "qul_thread.h" #include <FreeRTOS.h> #include <task.h> #include <queue.h> #include <board_utils/led.h> void Led_Thread(void *argument) { (void) argument; uint32_t speed = 1; uint32_t newSpeed = 0; int ledCycleCount = 0; bool ledOn = false; HardwareEvent ledEvent; while (true) { const TickType_t ticks = speed > 0 ? (350 / (portTICK_PERIOD_MS * speed)) : portMAX_DELAY; if (xTaskNotifyWait(0, ULONG_MAX, &newSpeed, ticks) == pdTRUE) { speed = newSpeed; } BoardUtils::toggleLED(); if (ledOn) { ledCycleCount++; ledCycleCount = ledCycleCount < 0 ? 0 : ledCycleCount; } ledOn = !ledOn; ledEvent.id = HardwareEventId::LedCycleCount; ledEvent.data = ledCycleCount; postEventsToUI(ledEvent); taskYIELD(); } }