I certainly may be missing something obvious, but there seems to be an issue with implementing a function pointer in a struct referenced by a pointer:
struct MyStruct {
void (*SetDriveMode)(uint8);
};
void Function1(const struct MyStruct * structPntr) {
void (*foo)(uint8);
foo = PIN1_SetDriveMode;
structPntr->SetDriveMode(PIN_DM_STRONG);
}
struct MyStruct structVar;
main {
structVar.MyFunction = PIN1_SetDriveMode;
Function1(&structVar)
}
Notice that foo is not actually used at all. If I compile my program written like above, it appears to work properly. I can place a breakpoint at the "structPntr->SetDriveMode(PIN_DM_STRONG);" line and it shows me the correct function address both in foo and in the SetDriveMode function pointer. However, if I just comment out the "foo = PIN1_SetDriveMode;" line and recompile, it will not work properly and when the debugger halts at the breakpoint, the member values of *structPntr are blank. I would greatly appreciate any thoughts y'all might have. Thanks.
