convert int to char dspic30f - Electronic Circuits Projects Diagrams Free

kenobe · 10th October 2007, 06:27 AM

Hi
The mplab c30 compiler does not support itoa() function.
how do I change a hex number ie 0x55 to become a char '55' without using the printf().
Thanks

Pommie · 10th October 2007, 07:59 AM

There is probably some easier way but this gets the job done,

Code:

	intVal=0x34;
	charout[0]=(intVal>>4)+0x30;
	charout[1]=intVal&0x0f+0x30;

Mike.

kenobe · 10th October 2007, 08:23 AM

Hi Pommie
Thanks for your help.
but what I need is charout[0] = 55 , not charout[0]=5, charout[1]=5

Pommie · 10th October 2007, 08:46 AM

Isnt't that just

charout=(char)intVal;

or even,

charout=intVal&0xff;

Mike.

kenobe · 10th October 2007, 09:28 AM

I tried that too, but mplab c30 compiler does not work with casting and masking ,so it still does not solve the problem.

Pommie · 10th October 2007, 03:21 PM

Quote:

Originally Posted by kenobe

I tried that too, but mplab c30 compiler does not work with casting and masking ,so it still does not solve the problem.

I found this hard to believe and so, I just tried the following,

Code:

#include <p30f2010.h>

unsigned int x;
unsigned char outchar;

int main(void){
	x = 0x45;
	outchar=(char)x;
	x = 0x45;
	outchar=x&0xff;
	x = 0x45;
	outchar=x;
	while(1);
}

It did exactly what I expected it to do.

Maybe you should post an example of what doesn't work.

Mike.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Title	Starter	Forum	Replies	Latest
c++ convert argv[1] to a char array	danielsmusic	Chit-Chat	5	18th March 2006 02:09 PM
revew code please	Seb	Micro Controllers	1	22nd February 2005 02:15 PM
I2C Master write problem using SSP (here's code)	Oznog	Micro Controllers	1	16th October 2004 06:48 AM
HOW TO CONVERT HEXA TO DECIMAL FOR LCD, PLS HELP!!!!!!!!	AUNG THANT	Micro Controllers	3	10th April 2004 01:38 PM
PIC 16f84A and PowerTip Alphanumeric display	27	Micro Controllers	1	9th March 2004 03:19 PM

10th October 2007, 06:27 AM	(permalink)
kenobe	convert int to char dspic30f Hi The mplab c30 compiler does not support itoa() function. how do I change a hex number ie 0x55 to become a char '55' without using the printf(). Thanks

10th October 2007, 07:59 AM	(permalink)
Pommie	There is probably some easier way but this gets the job done, Code: intVal=0x34; charout[0]=(intVal>>4)+0x30; charout[1]=intVal&0x0f+0x30; Mike.

10th October 2007, 08:23 AM	(permalink)
kenobe	Hi Pommie Thanks for your help. but what I need is charout[0] = 55 , not charout[0]=5, charout[1]=5

10th October 2007, 08:46 AM	(permalink)
Pommie	Isnt't that just charout=(char)intVal; or even, charout=intVal&0xff; Mike.

10th October 2007, 09:28 AM	(permalink)
kenobe	I tried that too, but mplab c30 compiler does not work with casting and masking ,so it still does not solve the problem.