This is an example of getting named function parameters with c99 code. Didn't work out of the box for C++ but I think there may be a way to get it to work for C++ as well.

named_func_params.c

/** To compile:
   gcc -Wall -c named_func_params.c -o named_func_params.o && \
   gcc named_func_params.o -lm -o named_func_params.x && \
   named_func_params.x
*/
#include<stdio.h>

typedef struct funcParams_s{
  int                     UID;
  char                    uid_char[24];
  unsigned                portIndex;
}funcParams_t;

void func1( funcParams_t params ){
  printf("params.UID: %i\n",params.UID);
}

void func2( funcParams_t* params ){
  printf("params->UID: %i\n",params->UID);
}

int main() {
  funcParams_t a;
  a = (funcParams_t){ .UID = 123, .portIndex = 0 };
  func1( a );
  func1( (funcParams_t){ .UID=456 } );
  func2( &(funcParams_t){ .UID=789 } );
  return 0;
}