NUCLEOのKeil Studioで浮動小数点数を出力する方法

[MACRUM (Toyomasa Watarai)]

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Hitchhiker's Guide to Printf in Mbed 6

Since Mbed 6 was released, there’s been a lot of confusion about printf. This is understandable, as the Mbed developers removed the previous method of printing stuff (Serial) that people have been using for years. What’s more, the developers have been very tight-lipped about what exactly to use as an equivalent. There are several possible replacements (none of which is a 1:1 port), and it’s often unclear which to use. I have worked with Mbed OS for years, and did extensive research and testi…

Also, if you need ISO C compliant floating point formatting in printf(), add this line into the target overrides block:

"target.printf_lib": "std"

Otherwise, by default, floating point numbers cannot be printed at all.