[SOLVED] Issue with DAC of PIC16F18877 [Getting No DAC Output]

[edaboard.user]

Issue with DAC of PIC16F18877 [Getting No DAC Output]

I am trying to use the 5-Bit DAC of PIC16F18877 but I am not getting any output.
External Oscillator of 16MHz Crystal is used.

Led Blink Test code is okay.

This is my MPLAB X IDE's XC8 Compiler code.

I need to get 1kHz Sine Wave.

Edit:

I am checking the output with my genuine Saleae Logic Analayzer.

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Code C - [expand]
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// PIC16F18877 Configuration Bit Settings
 
// 'C' source line config statements
 
// CONFIG1
#pragma config FEXTOSC = HS     // External Oscillator mode selection bits (HS (crystal oscillator) above 4MHz; PFM set to high power)
#pragma config RSTOSC = EXT1X   // Power-up default value for COSC bits (EXTOSC operating per FEXTOSC bits)
#pragma config CLKOUTEN = OFF   // Clock Out Enable bit (CLKOUT function is disabled; i/o or oscillator function on OSC2)
#pragma config CSWEN = ON       // Clock Switch Enable bit (Writing to NOSC and NDIV is allowed)
#pragma config FCMEN = ON       // Fail-Safe Clock Monitor Enable bit (FSCM timer enabled)
 
// CONFIG2
#pragma config MCLRE = OFF      // Master Clear Enable bit (MCLR pin function is port defined function)
#pragma config PWRTE = OFF      // Power-up Timer Enable bit (PWRT disabled)
#pragma config LPBOREN = OFF    // Low-Power BOR enable bit (ULPBOR disabled)
#pragma config BOREN = OFF      // Brown-out reset enable bits (Brown-out reset disabled)
#pragma config BORV = LO        // Brown-out Reset Voltage Selection (Brown-out Reset Voltage (VBOR) set to 1.9V on LF, and 2.45V on F Devices)
#pragma config ZCD = OFF        // Zero-cross detect disable (Zero-cross detect circuit is disabled at POR.)
#pragma config PPS1WAY = ON     // Peripheral Pin Select one-way control (The PPSLOCK bit can be cleared and set only once in software)
#pragma config STVREN = ON      // Stack Overflow/Underflow Reset Enable bit (Stack Overflow or Underflow will cause a reset)
 
// CONFIG3
#pragma config WDTCPS = WDTCPS_31// WDT Period Select bits (Divider ratio 1:65536; software control of WDTPS)
#pragma config WDTE = OFF       // WDT operating mode (WDT Disabled, SWDTEN is ignored)
#pragma config WDTCWS = WDTCWS_7// WDT Window Select bits (window always open (100%); software control; keyed access not required)
#pragma config WDTCCS = SC      // WDT input clock selector (Software Control)
 
// CONFIG4
#pragma config WRT = OFF        // UserNVM self-write protection bits (Write protection off)
#pragma config SCANE = available// Scanner Enable bit (Scanner module is available for use)
#pragma config LVP = OFF        // Low Voltage Programming Enable bit (High Voltage on MCLR/Vpp must be used for programming)
 
// CONFIG5
#pragma config CP = OFF         // UserNVM Program memory code protection bit (Program Memory code protection disabled)
#pragma config CPD = OFF        // DataNVM code protection bit (Data EEPROM code protection disabled)
 
// #pragma config statements should precede project file includes.
// Use project enums instead of #define for ON and OFF.
 
#include <xc.h>
 
#define _XTAL_FREQ 16000000
 
 
unsigned int index;
 
const unsigned char TableSineWave[128] = {
16,16,17,18,19,19,20,21,21,22,23,23,24,25,25,26,26,27,27,28,
28,29,29,30,30,30,30,31,31,31,31,31,31,31,31,31,31,31,30,30,
30,30,29,29,28,28,27,27,26,26,25,25,24,23,23,22,21,21,20,19,
19,18,17,16,16,15,14,13,12,12,11,10,10,9,8,8,7,6,6,5,
5,4,4,3,3,2,2,1,1,1,1,0,0,0,0,0,0,0,0,0,
0,0,1,1,1,1,2,2,3,3,4,4,5,5,6,6,7,8,8,9,
10,10,11,12,12,13,14,15
};
 
///Timer1
//Prescaler 1:1; TMR1 Preload = 61536; Actual Interrupt Time : 1 ms
//Place/Copy this part in declaration section
void InitTimer1(){
    T1CON = 0x01;
    PIR4bits.TMR1IF = 0;
    TMR1H = 0xF0;
    TMR1L = 0x60;
    PIE4bits.TMR1IE = 1;
    INTCON = 0xC0;
}
 
void __interrupt() ISR(void) {
    if((PIE4bits.TMR1IE) && (PIR4bits.TMR1IF)) {
        PIR4bits.TMR1IF = 0;
        TMR1H = 0xF0;
        TMR1L = 0x60;
        //Enter your code here
        if(++index > 127)index = 0;
        DAC1CON1 = TableSineWave[index];
    }
}
 
void main() {
    CM1CON0 = 0;
    CM2CON0 = 0;
 
    WPUA = 0b00001010;
 
    ANSELA = 0b00000000;
 
    TRISA = 0b00001010;
 
    SLRCONA = 0;
    ODCONA = 0;
    INLVLA = 0;
 
    PORTA = 0;
 
    LATA = 0;
 
    DAC1CON0 = 0b10100000;        // RA2-sinu wave 1kHz
 
    InitTimer1();
 
    while(1) {
    
    }
}

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Edit2:

I referred this article.

https://onlinedocs.microchip.com/ox...UID-BA0192AA-4BD9-4C5C-8F70-30FDA64058E4.html

I made a quick test and DAC is working but it is the interrupt that is not firing.
What might be the issue?

 

[edaboard.user]

The issue got solved.

Firstly the issue was with both XC8 and mikroC PRO PIC Compiler regarding DAC part of PIC16F18877 Microcontroller.
So, I switched the device to PIC18F46K22.

2. ANSELA had to be set to 0b00000100 to get Analog Voltages of the DAC on the RA2 Pin.