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#include "xc.h"
#include "../Lab5.X/lab5_lcd.h"
#include "circBuffer.h"
#include <stdio.h>
#pragma config ICS = PGx1 // Comm Channel Select (Emulator EMUC1/EMUD1 pins are shared with PGC1/PGD1)
#pragma config FWDTEN = OFF // Watchdog Timer Enable (Watchdog Timer is disabled)
#pragma config GWRP = OFF // General Code Segment Write Protect (Writes to program memory are allowed)
#pragma config GCP = OFF // General Code Segment Code Protect (Code protection is disabled)
#pragma config JTAGEN = OFF // JTAG Port Enable (JTAG port is disabled)
// CW2: FLASH CONFIGURATION WORD 2 (see PIC24 Family Reference Manual 24.1)
#pragma config I2C1SEL = PRI // I2C1 Pin Location Select (Use default SCL1/SDA1 pins)
#pragma config IOL1WAY = OFF // IOLOCK Protection (IOLOCK may be changed via unlocking seq)
#pragma config OSCIOFNC = ON // Primary Oscillator I/O Function (CLKO/RC15 functions as I/O pin)
#pragma config FCKSM = CSECME // Clock Switching and Monitor (Clock switching is enabled,
// Fail-Safe Clock Monitor is enabled)
#pragma config FNOSC = FRCPLL // Oscillator Select (Fast RC Oscillator with PLL module (FRCPLL))
void setup(void) {
CLKDIVbits.RCDIV = 0;
AD1PCFG = 0x9fff; //all digital inputs and outputs
initBuffer();
lcd_init();
lcd_setCursor(0,0);
// -- I2C STUFF --
I2C2BRG = 0x9D;
I2C2CONbits.I2CEN = 1;
_I2CSIDL = 0;
IFS3bits.MI2C2IF=0;
// -- ADC STUFF --
AD1CON1 = 0; // set all control to 0.
AD1CON1bits.SSRC = 0b010; //Rollover to conversion
AD1CON1bits.ASAM = 1; // auto-sample
AD1CON1bits.FORM = 0b00;
AD1CON2 = 0;
AD1CON2bits.CSCNA = 0; // no scan
AD1CON2bits.SMPI = 0b0; // every conversion
AD1CON2bits.BUFM = 0; // two 8-word buffers
AD1CON3bits.ADCS = 0b1;
AD1CON3bits.ADRC = 0;
AD1CON3bits.SAMC = 0b1;
AD1CON1bits.ADON = 1; // ton
AD1CHS = 0;
AD1CHSbits.CH0NB = 0;
AD1CHSbits.CH0SB = 0;
AD1CHSbits.CH0NA = 0;
AD1CHSbits.CH0SA = 0;
// -- TIMER 2 STUFF --
T2CON = 0;
TMR2 = 0;
T2CONbits.TCKPS = 0b10;
PR2 = 25000;
T2CONbits.TON = 1;
// -- TIMER 3 STUFF --
T3CON = 0;
TMR3 = 0;
T3CONbits.TCKPS = 0b10;
PR3 = 1562;
T3CONbits.TON = 1;
// -- INTERRUPT ENABLES --
IEC0bits.AD1IE = 1;
IFS0bits.AD1IF = 0;
//ADC Interrupt (Enabled)
IEC0bits.T2IE = 1;
IFS0bits.T2IF = 0;
// T2 Interrupt (Enabled)
}
volatile unsigned int *ADCpointer = &ADC1BUF0, ADCvalue = 0;
void __attribute__((__interrupt__, __auto_psv__)) _ADC1Interrupt(void) {
IFS0bits.AD1IF = 0;
}
volatile unsigned char flag = 0;
void __attribute__((__interrupt__, __auto_psv__)) _T2Interrupt(void) {
//Allow writing to LCD
_T2IF = 0;
TMR2 = 0;
flag = 1;
}
int main(void) {
setup();
while (1) {
char adStr[20];
unsigned long adValue;
if (flag) {
flag = 0;
lcd_setCursor(0,0);
adValue = getAvg();
sprintf(adStr, "%6.4f V", (3.3/1024)*adValue);
lcd_printStr(adStr);
}
}
return -1;
}
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