02-usart/src/mem.c


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#include "arch.h"
#include "mem.h"
#include "common.h"

#ifdef ARCH_STM32L4
// Provide a definition for memset()

void* memset(void* dest, int c, size_t n)
{
  uint8_t c8 = (uint8_t) c;
  uint8_t* dest8 = (uint8_t*) dest;
  uint8_t* to = dest8 + n;

  while(dest8 < to) {
    *(dest8 ++) = c8;
  }

  return dest;
}

#endif

// void memcpy_(void* dest, const void* src, size_t len)
// {
//   uint8_t* dest_ = (uint8_t*) dest;
//   uint8_t* src_ = (uint8_t*) src;
// 
//   while ((len--) > 0)
//     *(dest_ ++) = *(src_ ++);
// }