Add support for building with IAR #276
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added 12 commits
September 13, 2022 09:25
IAR generates errors Pe144 'a value of type "int32_t (*)(int32_t)" cannot be used to initialize an entity of type "void *" and Pe513 'a value of type "int32_t (*)(int32_t)" cannot be assigned to an entity of type "void *"'. Also, when citing the name of a specific function, there's no need to use the '&' operator before the symbol - it's already typed as a function pointer.
IAR generates error Pe020 'identifier is undefined'.
When building with IAR, these macros expand to void pointers, so without an explicit cast, IAR generates error Pe132 'expression must have pointer-to-struct-or-union type but it has type "void *".
IAR generates warning Pe111 'statement is unreachable'. GCC doesn't complain about their absence, if they are removed.
IAR generates warning Pe546 'transfer of control bypasses initialization of variable'.
IAR generates warning Pa082 'undefined behavior: the order of volatile accesses is undefined in this statement'.
IAR generates warning Pe068 'integer conversion resulted in a change of sign'.
IAR generates warning Pe192 'unrecognized character escape sequence'.
IAR generates warning Pa093 'implicit conversion from floating point to integer'.
IAR generates warning Pe161 'unrecognized #pragma'.
IAR generates warning Pe188 'enumerated type mixed with another type'.
IAR generates warning Pe177 'function was declared but never referenced'.
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Here is the first tranche of changes required in order to build the examples with the IAR toolchain. All these commits are restricted to C code changes (bar one where C is embedded in a pio file) - there are a couple more commits that will follow later once I have confirmation that related changes to CMake have been accepted.
I've grouped the changes according to the compiler diagnostic generated, with those generating build errors first and warnings later in the sequence. Otherwise the order is arbitrary.