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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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LPC2129 Task Activation At 200Hz?Posted by ARMinator on December 19, 2008 Hi, I'm designing an acquisition board based on an LPC2129 running at 60Mhz. One of the requirement for this board is to perform data acquisition at 200Mhz, at the task level... Using FreeRTOS, what is the worst case activation time for a task, say from the time a semaphore is given from an interrupt, handled by the kernel and the task is activated? Does 200Mhz activation time for this processor at this clock frequency seem too high for FreeRTOS? I've done similar acquisition at this rate (and even higher) using vxWorks, though that was on a 750Mhz PPC. On that specific processor using vxWORK the activation time was about 4-7us. Thanks, Jean
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NXP tweet showing LPC5500 (ARMv8-M Cortex-M33) running FreeRTOS.
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