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FreeRTOS Support ArchiveThe FreeRTOS support forum is used to obtain active support directly from Real Time Engineers Ltd. In return for using our top quality software and services for free, we request you play fair and do your bit to help others too! Sign up to receive notifications of new support topics then help where you can.
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how to manage queue and semaphorePosted by ephobb on December 28, 2015 hi, I m bit confused while implementing queue and semaphore. my scenario is as follows. I have three task. Two are from same prioirity and one is having higher prioirity. I want to send data from three task to queue. i will receive the data from queue to fourth task, where i will send data to LCD. I can't understand how to manage the queue. xQueueHandle lcd_queue=0; lcdqueue = xQueueCreate(20,sizeof(uint8t)); xcreate(task1,"T1",NULL,1,NULL); xcreate(task2,"T2",NULL,1,NULL); xcreate(task3,"T3",NULL,2,NULL); xcreate(Send_lcd,"LCD",NULL,1,NULL); // This task will send data to LCD and receive the data from queue. how to manage queue and semaphorePosted by edwards3 on December 28, 2015 Use xQueueSendToBack() to send to the queue and xQueueReceive() to receive from the queue. No need for a semaphore. http://www.freertos.org/xQueueSendToBack.html http://www.freertos.org/a00118.html
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NXP tweet showing LPC5500 (ARMv8-M Cortex-M33) running FreeRTOS.
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