newbie - int to char* and more.

[d_stranz]

This is C++ 101. You should be able to use a union for this:

union myConverter
{
  std::uint32_t intVal;
  unsigned char[4] charVal;
}
 
myConverter c;
c.intVal = 16000;
 
// c.charVal[0] - [3] now contains the unsigned hex values

union myConverter
{
  std::uint32_t intVal;
  unsigned char[4] charVal;
}

myConverter c;
c.intVal = 16000;

// c.charVal[0] - [3] now contains the unsigned hex values

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Of course, this assumes you have the same byte order on your target device. If not, you'll need to swap bytes around.