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PIC18F45K22 basic port state

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sairfan1

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Hi, im working with EasyPIc7 at 3.3v 18F45K22 MCU and MikroC compiler.
unable to run this simple program, i checked with volt meter, when i press button RD6 there is logic 1 at RD6 of MCU. plz help

Code: 
void main() {

 ANSELA = 0;
 ANSELB = 0;
 ANSELC = 0;
 
 TRISB = 0;
 TRISD = 0xFF;

 
 PORTB = 0xFF;
 //PORTD = 0x00;
 Delay_ms(1500);

 while(1){
  // if (LATD7_bit == 1) // also checked
  if (PORTD.RD6 == 1){
   PORTB = ~PORTB;
   Delay_ms(250);
  }
 }

}
 
Last edited:

18F45K22 is 5V device and 18LF45K22 is 3.3V device.
 

milan.rajik said:
18F45K22 is 5V device and 18LF45K22 is 3.3V device.
Click to expand...
According to the datasheet that I use, either variant can be used at 3.3 Volts:

Untitled.jpg
 

I have been using PIC 16F devices, new to 18F device, want to know what is concept of LAT ?
 

Use PORTx to read from pin's
LATx to write to pin's
TRISx to change the direction ( in and out )

If you want to read the value that was written last time, you can read the same by LATx with out any loading effect but PORTx value may be changed base on load connected to the PORTx pin's ( Capacitor load )

see this link PIC mid rage ( 16F )read modify write behavior of PORTx
https://www.mikroe.com/download/eng/documents/compilers/mikroc/pro/pic/help/rmw.htm
 
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