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#include "xc.h"
#include "lab2b_header.h"
#include "stdint.h"
// CW1: FLASH CONFIGURATION WORD 1 (see PIC24 Family Reference Manual 24.1)
#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))
#define PERIOD 20
//DEFINTIONS
void writeColor(int r, int g, int b);
void loop(void);
void delay(int delay_in_ms);
uint32_t packColor(unsigned char Red, unsigned char Grn, unsigned char Blu);
unsigned char getR(uint32_t RGBval);
unsigned char getG(uint32_t RGBval);
unsigned char getB(uint32_t RGBval);
void writePacCol(uint32_t PackedColor);
uint32_t Wheel(unsigned char WheelPos);
void setup(void) {
CLKDIVbits.RCDIV = 0; //Set RCDIV=1:1 (default 2:1) 32MHz or FCY/2=16M
AD1PCFG = 0x9fff;
TRISA = 0b1111111111111110;
TRISB = 0x0000;
wait_1ms();
}
int main(void) {
setup();
wait_100us();
loop();
return 0;
}
void loop(void) {
while (1) {
// LATA = 0x0000;
// wait_100us();
//
// //RED
// write_1();
// write_1();
// write_1();
// write_1();
//
// write_1();
// write_1();
// write_1();
// write_1();
//
// //GREEN
// write_1();
// write_0();
// write_0();
// write_1();
//
// write_1();
// write_0();
// write_1();
// write_1();
//
// //BLUE
// write_0();
// write_0();
// write_0();
// write_0();
//
// write_0();
// write_0();
// write_0();
// write_0();
/*
writeColor(255, 155, 000);
*/
int byteFrameNumber = 0;
while (byteFrameNumber <= 255) {
// // COLOR GRADIENT
// writeColor(byteFrameNumber, 0 , 255 - byteFrameNumber);
//COLOR WHEEL
writePacCol(Wheel(byteFrameNumber));
delay(PERIOD);
byteFrameNumber++;
}
}
}
void writeColor(int r, int g, int b) {
write_0();
wait_100us();
int i;
for(i = 7; i >= 0; i--) {
r & (1 << i) ? write_1() : write_0();
}
for(i = 7; i >= 0; i--) {
g & (1 << i) ? write_1() : write_0();
}
for(i = 7; i >= 0; i--) {
b & (1 << i) ? write_1() : write_0();
}
}
void delay(int delay_in_ms) {
int i = 0;
while (i < delay_in_ms) {
wait_1ms();
i++;
}
}
uint32_t packColor(unsigned char Red, unsigned char Grn, unsigned char Blu) {
return ((long) Red << 16) | ((long) Grn << 8) | ((long) Blu);
}
unsigned char getR(uint32_t RGBval) {
return (unsigned char) (RGBval >> 16);
}
unsigned char getG(uint32_t RGBval) {
return (unsigned char) (RGBval >> 8 );
}
unsigned char getB(uint32_t RGBval) {
return (unsigned char) (RGBval >> 0 );
}
void writePacCol(uint32_t PackedColor) {
writeColor(getR(PackedColor), getG(PackedColor), getB(PackedColor));
}
uint32_t Wheel(unsigned char WheelPos) {
// Input a value 0 to 255 to get a color value.
// The colours are a transition r - g - b - back to r.
WheelPos = 255 - WheelPos;
if(WheelPos < 85) {
return packColor(255 - WheelPos * 3, 0, WheelPos * 3);
}
if(WheelPos < 170) {
WheelPos -= 85;
return packColor(0, WheelPos * 3, 255 - WheelPos * 3);
}
WheelPos -= 170;
return packColor(WheelPos * 3, 255 - WheelPos * 3, 0);
}
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