I want to use a pointer to cast odd number address data to int type or long type data and read them, but I cannot do that successfully. How can I address this problem?|FAQ|ROHM Semiconductor

FAQ's

I want to use a pointer to cast odd number address data to int type or long type data and read them, but I cannot do that successfully. How can I address this problem?
- To cast odd number address data to int type or long type data and read them, specify a __packed modifier.
  This generates a code to be accessed in bytes whether or not the address is an odd or even number.
  An example is shown below.
  unsigned char ucbuf[8] = {0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88};
  unsigned int ui;
  ...
  void func(void)
  {
  ui = *(__packed unsigned int*)&ucbuf[3]; // ucbuf[3] and ucbuf[4] data are read to store 0x5544 in ui
  }
  
  For the __packed modifier, refer to "11.1 How To Use __packed and __unpacked Modifiers" in "CCU8 User's Manual".
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