C166: Generate ENWDT Instruction

Information in this article applies to:

• C166 Version 5

QUESTION

The C166 intrinsic functions support only disabling the watchdog timer via _diswdt_(). But the Infineon XC16x devices have a new ENWDT instruction intrins.h How can I generate a ENWDT instruction in my C code?

ANSWER

The C166 Version 5 has a very powerful in-line assembler. Therefore you may simply add 'intrinsic' functions as you need them.

For ENWDT you may simply use the following statement:

__asm { ENWDT };

A definition of an intrinsic function would look like:

#define _enwdt_()  __asm { ENWDT };

void main (void) {
  _enwdt_ ();
}

MORE INFORMATION

• Refer to Extended Inline Assembly in the C166 User's Guide.

Last Reviewed: Thursday, February 25, 2021