When using the Force U32 macros in C++, the peripheral structs will not
have copy constructors due to them being volatile. Thus, doing temp_reg = reg
via typeof() will not work and cause a "ambiguous overload of operator=" error.
This commit fixes the macros by reading the reg into a uint32_t value first.
update all struct headers to be more "standardized":
- bit fields are properly wrapped with struct
- bitwidth sum should be 32 within same struct, so that it's correctly padded with reserved bits
- bit field should be uint32_t
- typedef volatile struct xxx{} yyy;: xxx must exists. refer: https://github.com/espressif/esp-idf/pull/3199
added helper macros to force peripheral registers being accessed in 32 bitwidth
added a check script into ci
