DECLARING BDATA AND SBIT VARIABLES

Applies to: C51 C Compiler

Answer

---

Information in this article applies to:

• C51 All Versions

---

QUESTION

I'm trying to use the SBIT keyword to create a bit in a BDATA variable. However, I can't seem to get the example program to work:

void main (void)
  {
  bdata int ibase;
  sbit mybit0 = ibase ^ 0;
  .
  .
  .
  mybit0 = 1;
}

The C51 command line I use is:

c:c51examplesmy>C51 TEST.c

and the error message I receive is:

syntax error near "sbit"

What's wrong with my program?

ANSWER

You must declare the bdata and sbit variables OUTSIDE of a function. For example:

bdata int ibase;
sbit mybit0 = ibase ^ 0;

void main (void)
{
mybit0 = 1;
}

MORE INFORMATION

• Refer to sbit Types in the Cx51 User's Guide.
• Refer to Bit-Addressable Objects in the Cx51 User's Guide.

Article last edited on: 2006-03-12 09:28:59