#include <xc.h>
 
// Configuration bits (adjust as needed)
#pragma config FOSC = INTRC_CLK  // Internal oscillator
#pragma config WDTE = OFF       // Watchdog timer disabled
#pragma config PWRTE = OFF       // Power-up timer disabled
#pragma config BOREN = OFF       // Brown-out reset disabled
#pragma config LVP = OFF         // Low-voltage programming disabled
 
// Define I/O pins
#define RECEIVER_PIN  TRISB0     // Input pin for RF receiver (adjust pin number)
#define LED_PIN       TRISC6     // Output pin for LED (adjust pin number)
 
// Constants
#define BUTTON_1_CODE 0x9693888
#define BUTTON_2_CODE 0x9693936
#define BUTTON_3_CODE 0x9693708
#define BUTTON_4_CODE 0x9693744
 
// Variables
int brightness = 0;
bool button1Pressed = false;  // Flag to track Button 1 press
 
void setup() {
  // Initialize I/O pins
  TRISB0 = 1;      // Set receiver pin as input
  TRISC6 = 0;     // Set LED pin as output
 
  // Initialize serial communication (if using UART module)
  // ... (code for UART initialization, if needed)
 
  // Read initial brightness from EEPROM (if applicable)
  // ... (code for reading from EEPROM, if needed)
 
  // Set initial brightness
  analogWrite(brightness);
}
 
void loop() {
  // Check for incoming signal on receiver pin
  if (PORTBbits.RB0 == 0) {
    // Delay to avoid debouncing (adjust as needed)
    __delay_ms(5);
 
    // Check if signal is still low (indicates start of transmission)
    if (PORTBbits.RB0 == 0) {
      // Capture and decode the received value
      int receivedValue = decodeRFSignal();
 
      // Check for valid button code
      if (receivedValue == BUTTON_1_CODE) {
        button1Pressed = true;
        brightness = getBrightnessFromEEPROM();  // Read stored brightness
        analogWrite(brightness);                // Set initial brightness
      } else if (button1Pressed) {  // Only process other buttons if Button 1 was pressed
        switch (receivedValue) {
          case BUTTON_2_CODE:
            if (brightness < 255) {
              brightness++;
              setBrightnessToEEPROM(brightness);  // Save new brightness
              analogWrite(brightness);
            }
            break;
 
          case BUTTON_3_CODE:
            if (brightness > 0) {
              brightness--;
              setBrightnessToEEPROM(brightness);  // Save new brightness
              analogWrite(brightness);
            }
            break;
 
          case BUTTON_4_CODE:
            brightness = 0;
            analogWrite(brightness);
            break;
        }
        button1Pressed = false;  // Reset flag after processing subsequent buttons
      }
    }
  }
}
 
// Implement these functions based on your specific requirements for:
// - analogWrite(brightness): This function should set the LED brightness based on the `brightness` variable. 
//                            For PIC12F683, you might use PWM (Pulse Width Modulation) techniques.
// - decodeRFSignal(): This function should capture the incoming RF signal bit by bit and decode it 
//                      using the appropriate algorithm (e.g., Manchester encoding) to determine the received value.
// - getBrightnessFromEEPROM(): This function should read the stored brightness value from EEPROM (if applicable).
// - setBrightnessToEEPROM(brightness): This function should save the new brightness value to EEPROM (if applicable).
 
void __interrupt() interrupt() {
  // Interrupt service routine (if needed for receiving RF signals efficiently)
}
 

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