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Does V3.224 have printf("%6.4w", ADC32)?

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Know
Guest

Does V3.224 have printf("%6.4w", ADC32)?

Posted: Thu Apr 20, 2006 12:52 pm

Hello,
I would like to print out 4 decimal numbers, I don't really want to use float. I try

Code:

printf("%6.4w",ADC32);

on V3.224, it gave me a "Printf format (%) invalid"
work arround?

Code:

int32 ADC32;
delay_ms(10);
ADC32=read_adc();
printf("%6.4w",ADC32);

thank you
RC

PCM programmer

Joined: 06 Sep 2003
Posts: 21708

Posted: Thu Apr 20, 2006 1:33 pm

Quote:

Does V3.224 have printf("%6.4w", ADC32)?

Sometimes this information is available on the CCS versions page:
http://www.ccsinfo.com/devices.php?page=versioninfo
It says:

Quote:

3.231 New printf specifications %g and %w added and %f improved

So that feature came out after your version.

Quote:

I would like to print out 4 decimal numbers

The A/D converter in your PIC likely returns 10 bits. You don't
need an int32 to hold this value. You can use an int16.

The value returned by read_adc() is an unsigned integer,
from 0 to 1023. It's not a floating point value.
You can display the value with printf by using the "%lu" format
specification. To display leading spaces when there are less
than 4 digits, you can use "%4lu" with CCS to do this. See the
example program below. It displays:

Code:

55

1023

Code:

#include <16F877.H>
#fuses XT, NOWDT, NOPROTECT, BROWNOUT, PUT, NOLVP
#use delay(clock=4000000)
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7, ERRORS)

//============================
void main()
{
int16 value;

value = 55;
printf("%4lu\n\r", value);

value = 1023;
printf("%4lu\n\r", value);

while(1);
}

Know
Guest


Posted: Thu Apr 20, 2006 2:04 pm

Got it Thank you RC

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