Getting the IEEE Single-precision bits for a float

Question

I need to write an IEEE single-precision floating point number to a 32-bit hardware register at a particular address. To do that, I need to convert a variable of type float

Answer 1

You can use type punning with a union,

union {
    float f;
    uint32_t u;
} un;
un.f = your_float;
uint32_t target = un.u;

to get the bits. Or you can use memcpy.