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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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KEIL (RVDS) Cortex-M4 RT kernel port requires core to feature FPUPosted by danielmicrochip on August 31, 2016 Hello, it seems that, in FreeRTOS v9.0.0, at least KEIL (RVDS) Cortex-M4 RT kernel port requires core to feature floating-point unit (FPU): FreeRTOSv9.0.0FreeRTOSSourceportableRVDSARMCM4MPU FYI, FPU is an optional feature of Cortex-M4. For instance, our SAM4C device (from Atmel now Microchip) is a dual-core device which only secondary core features FPU. None of our customers who use KEIL can use FreeRTOS due to this. Can KEIL use FreeRTOS on Cortex-M4 devices that don't have an FPU? Kind regards, Daniel KEIL (RVDS) Cortex-M4 RT kernel port requires core to feature FPUPosted by rtel on August 31, 2016 If you use FreeRTOS on a Cortex-M3, or a Cortex-M4 that does not have an FPU, then use the port layer files from FreeRTOS/source/portable/[compiler]/ARM_CM3 If you use FreeRTOS on a Cortex-M4 that does have an FPU (or likewise M7), then use the port layer files from FreeRTOS/source/portable/[compiler]/ARM_CM4F FPU support is the only difference between the two.
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NXP tweet showing LPC5500 (ARMv8-M Cortex-M33) running FreeRTOS.
Meet Richard Barry and learn about running FreeRTOS on RISC-V at FOSDEM 2019
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FreeRTOS and other embedded software careers at AWS.
