1.2 KiB
1.2 KiB
Some common mistakes
Bit-width mismatch
That is, the bit-width of the LHS and RHS of an assignment operation are different. For example, the following code will result in compile error:
Register <8> r1;
Register <16> r2;
r1 <= r2; // Error: bit-width mismatch
Register/Wire passed by value
Register/Wire can be only passed by reference. We forbid the copy/move constructor for Register/Wire to avoid misuse.
This may cause some error in the lambda function of a wire.
Register <8> r1;
Wire <8> w1 = [&]() { return r1; };
To fix this issue, you may return by reference, or use + operator to convert the value to bit type.
Register <8> r1;
Wire <8> w1 = [&]() -> auto & { return r1; };
Wire <8> w2 = [&]() { return +r1; };
C-array as member variable
We do not support C-array as member variable for synchronization. Our C++ static reflection library do not support parsing C-array as member variable currently.
Always use std::array instead.
struct NeedToSync {
std::array <Register <1>, 8> data;
std::array <Wire <1>, 8> data2;
};
Some others
If you encounter some other issues, please feel free to open an issue.