The official RT-Thread (hereinafter referred to as RTT) does not support floating-point printing. After all, quite a few MCUs do not even support floating-point instructions. If you need to use floating-point printing during debugging, you can pass The following steps are implemented:

Step1: Switch libc from the nano version to the standard version:

Step2: Use the sprintf function to output the floating point to a string, and then print it through rtprintf:

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? The official RTT supports 64-bit long integer printing, but this function is not turned on by default and can be enabled as follows: