[SOLVED] ccs c function problem: function used but not defined delay_ms

[mvliege]

Hi,
I used internal oscillator with PIC18F46K22 but, I have faced this problem (it's delay problem in the lcd.c, it appears when I complied. )

"function used but not defined delay_ms 609 SRC=1356"

problem is about using internal oscillator?

you can find an image for code the following attachment below
thank you,

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Code C - [expand]
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#include <main.h> 
#FUSES INTRC_IO 
#include <lcd.c> 
 
int a=0; 
 
#use delay(internal=64MHz) 
#INT_TIMER0 
void TIMER0_isr(void) 
{ 
set_timer0(15536); 
if(a==1) 
output_low(pin_c0); 
output_toggle(pin_c1); 
printf(lcd_putc,"\f ERROR \n PLC CHECK"); 
} 
 
#INT_EXT 
void EXT_isr(void) 
{ 
if(input(pin_b0)==1) 
a=1; 
}

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[FoxyRick]

Is #use delay (internal=64MHz) valid?

"internal" is not mentioned in my manual - have you looked at the #use delay directive?

 

[FvM]

Is #use delay (internal=64MHz) valid?

Yes, at least with recent compiler versions. The statement also enables the internal PLL.

delay_ms() would also work in this context.

 

[mvliege]

Thank you guys,
I solved the problem,

I have tried the following code below and it solved

#use delay(internal=64MHz)
#include <lcd.c>

thanks,
BS

 

[FvM]

Oh yes, a problem of statement order. You can have multiple #use delay statements in a program and it's only valid for the code below it. So lcd.c is compiled without a clock frequency specification.