18F4431 USART MPALB X Logic Analyzer don’t work

[giuseppe]

Hi everybody,

I try PIC18F4431 to transmit a character with usart module on MPLAB X V2.05 simulator, but the logic analyzer of MPLAB remain flat.

Why? I don’t understand, the code is simple. Bug on the simulator?

 

This is the code:

<code>

#include <xc.h>



//******************************************  

 //MAIN  

 //******************************************  

 int main(int argc, char** argv) {  

 int word=0b10101010;  

     PWMCON0bits.PWMEN2=0;   //PWM of on portB 

     PWMCON0bits.PWMEN1=0;  

     PWMCON0bits.PWMEN0=0;  

     SSPCONbits.SSPEN=0;     //SSP off  

     ADCON0bits.ADON = 0;    //disable ADC module 

     ANSEL0 = 0x00;          //disable A/D input 

 

     INTCONbits.GIE = 0;   //disable interrupt 

 

     TRISCbits.RC6 = 0;              //usart out pin 

     TRISCbits.RC7 = 0;              //usart out pin 

 

     TXSTA=0;                    //reset register 

     RCSTA=0;                    //reset register 

     BAUDCON=0;                    //reset register 

     TXSTAbits.CSRC=1;            //clock from BRG  

     TXSTAbits.TX9=0;            //8 bit  

     TXSTAbits.SYNC=1;            //syncro 

     TXSTAbits.BRGH=1;            //high speed  

 

     SPBRGH=0;                   //baud rate  

     SPBRG=16;  

 

     RCSTAbits.SPEN=1;           //serial port enable bit  

     TXSTAbits.TXEN=1;            //enable TX  

 

     TXREG=word;                 //transmit 

     while(1);  

     return 0;  

 } </code>

[AJISH ALFRED]

Hi,

Keep the code excluding the register settings inside the while (1) loop and try again.

[giuseppe]

No, the logic analyzer of MPLAB don’t simulate USART peripheral. I asked it on microchip forum.

[Author]

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