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PIC18F452 UART

 
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lgeorge123



Joined: 05 Dec 2004
Posts: 31

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PIC18F452 UART
PostPosted: Wed May 15, 2019 5:52 am     Reply with quote

In the follow codes, ascii value 1.23 is send to pic18f452 via uart. How to modify the code in order to make some judgement in ascii value ?
Code:
#include <18f452.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP,NODEBUG
#use delay(clock=20000000)
#use RS232(BAUD=9600, XMIT=PIN_C6, RCV=PIN_C7, ERRORS)

int8 j;

void main(){
                      // Set internal oscillator to 8MHz
  while(TRUE){
    if(kbhit()){    // If a character available
      j = getc();   // UART read
      putc(j);      // Send it back
    }
}
}



like if (j=='1.23'), this show error !!
dluu13



Joined: 28 Sep 2018
Posts: 198
Location: Toronto, ON

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PostPosted: Wed May 15, 2019 6:07 am     Reply with quote

Look up the atoi(), atof(), and atol() functions in the manual. They turn null terminated strings into numbers that will allow you to do what you want.

They are not specific to ccs, so you can just Google them as well.
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