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Undefined identifiers in .ini file

Question asked by hospodar.ivan on Aug 12, 2015
I trying send characters to the UART in simulation in Keil MDK-ARM using .ini file. This code is from uVision Help.

signal void serialA_Z (void) {
  char ch;
 
  for (ch = 'A'; ch < 'Z'; ch++)   {
   S0IN = ch;                                /* Send character */
   twatch (CLOCK / 900);
  }                                           /* Repeat */
}

But, there is an undefined identifiers error.
Where should be defined these identifiers? It is not in the STM lib. or CMSIS files? 

2015-08-12_13-47-38.png

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