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Read-Only Author
Jan Goormans Posted
26-Apr-2004 22:24 GMT Toolset
C51 |  problem with FUNC Jan Goormans I always get an error 129 (missing ';' before 'void') when I compile in this part:
func void iicstart (void)
{
sda = 1;
scl = 1;
del4us ()
sda = 0;
del4us ()
scl = 0;
del4us ()
}
what is wrong? |
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Read-Only Author
Andrew Neil Posted
26-Apr-2004 22:28 GMT Toolset
C51 | RE: problem with FUNC Andrew Neil Is this supposed to be 'C'?
If so, what is func? |
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Read-Only Author
Drew Davis Posted
26-Apr-2004 23:18 GMT Toolset
C51 | RE: problem with FUNC Drew Davis "func" is the problem.
"Missing ; before <token>" is one of those compiler error messages that you wish actually says what it means. Normally, I see this error when there is an undefined type for a return value of a function.
ForgotToInclude f()
- Missing ; before f. |
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Read-Only Author
Andy Neil Posted
26-Apr-2004 23:40 GMT Toolset
C51 | RE: problem with FUNC Andy Neil "'Missing ; before <token>' is one of those compiler error messages that you wish actually says what it means."
What it means is that the compiler expects nothing before <token>; therefore, if it finds something before <token>, it assumes that there should've been a ';' after the "something" !! |
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Read-Only Author
Jon Ward Posted
26-Apr-2004 23:16 GMT Toolset
C51 | RE: problem with FUNC Jon Ward Should there be a ; after del4us ()???
Jon |
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Read-Only Author
Andy Neil Posted
26-Apr-2004 23:41 GMT Toolset
C51 | RE: problem with FUNC Andy Neil "Should there be a ; after del4us ()???"
Surely, there should be a ';' after each del4us() ?! |
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Read-Only Author
Drew Davis Posted
27-Apr-2004 02:05 GMT Toolset
C51 | RE: problem with FUNC Drew Davis Maybe del4us() is a macro that inserts its own semicolons?
#define del4us() _nop_;_nop_;_nop_;_nop_;
(Not a style I would recommend. I write macros that look like functions assuming I'll put a semicolon after them at the point of use.) |
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Read-Only Author
Jon Ward Posted
27-Apr-2004 14:02 GMT Toolset
C51 | RE: problem with FUNC Jon Ward On second look, it appears you have debugger functions confused with C functions.
When writing your C program, you must use ANSI C rules. And, func is not a part of that rule set.
If your function is intended to be used in your program, you should modify it as follows:
void iicstart (void)
{
sda = 1;
scl = 1;
del4us ();
sda = 0;
del4us ();
scl = 0;
del4us ();
}
If, on the other hand, the function is intended to be used in the debugger (to simulate the input of an I2C input signal) you should modify it as follows:
func void iicstart (void) {
sda = 1;
scl = 1;
del4us ();
sda = 0;
del4us ();
scl = 0;
del4us ();
}
Jon |
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