FOXBORO FBM232 P0926GW

Description

FOXBORO FBM232 P0926GW

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FBM232 P0926GW performing floating-point operations during interrupts or in a certain thread can cause data errors in another TCP communication thread.

·The TCP protocol stack extensively uses memcpy, which in turn utilizes FPU registers. It is highly likely that another interrupt occurred during TCP data processing, performing floating-point operations and modifying FPU registers, resulting in TCP data errors. Using floating-point operations in interrupts for a 32 microcontroller can result in excessive memory overhead. If FPU hardware acceleration is available, it can alleviate the pressure on CPU software operations.

·In the FBM232 P0926GW code, for floating-point calculation values, it is necessary to add an ‘f’ after the floating-point number: for example, 10.1f, which is a single precision floating-point number; Instead of using 10.1 directly, it is a double precision floating-point. Because double precision floating-point calculations take a long time, with a difference of about 10 times.

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