Etepic

Tranceiver PIC:

/*
* gonderici devre
* Created on 29 Aral?k 2025 Pazartesi, 13:18
*/

#include <xc.h>

// CONFIGURATION BITS
#pragma config FOSC = HS        // HS Oscillator (High-speed crystal)
#pragma config WDTE = OFF      // Watchdog Timer Disable
#pragma config PWRTE = ON      // Power-up Timer Enable
#pragma config BOREN = ON      // Brown-out Reset Enable
#pragma config LVP = OFF        // Low Voltage Programming Disable
#pragma config CPD = OFF        // Data EEPROM Code Protection Disable
#pragma config WRT = OFF        // Flash Program Memory Write Protection Disable
#pragma config CP = OFF        // Flash Program Memory Code Protection Disable

#define _XTAL_FREQ 8000000      // 8MHz Kristal

#define CSN RC2
#define CE  RC1

void SPI_Init() {
    TRISC3 = 0; //SCK
    TRISC5 = 0; //MOSI
    TRISC4 = 1; //MISO
    SSPSTAT = 0x40; // CKE=1
    SSPCON = 0x20;  // Master mode, Fosc/4, SSPEN=1
}

uint8_t SPI_Write(uint8_t data) {
    SSPBUF = data;
    while(!BF);
    return SSPBUF;
}

void NRF_Command(uint8_t reg, uint8_t value) {
    CSN = 0;
    SPI_Write(0x20 | reg); // Yazma komutu + Register adresi
    SPI_Write(value);
    CSN = 1;
}

void ADC_Init() {
    ADCON1 = 0x80; // Sa? dayal?, tümü analog
    ADCON0 = 0x41; // Fosc/8, Channel 0, ADC On
}

uint8_t ADC_Read() {
    __delay_us(30);
    GO_nDONE = 1;
    while(GO_nDONE);
    return ADRESH; // 8-bit sonuç (ADCON1 ayar?na göre üst bitler)
}

void main() {
    TRISA0 = 1; // ANALOG input
    SPI_Init(); 
    ADC_Init(); 
    TRISC1 = 0; 
    TRISC2 = 0;
    
    // NRF Ayarlar? (0x7A: IRQ kapal?, CRC 1-byte, PWR_UP=1, PTX)
    NRF_Command(0x00, 0x7A); 
    NRF_Command(0x11, 1);    // Payload boyutu: 1 Byte gondermek icin
    
    while(1) {
        uint8_t sensor_data = ADC_Read();
        
        CSN = 0;
        SPI_Write(0xA0);        // W_TX_PAYLOAD komutu
        SPI_Write(sensor_data); // Analog veriyi gönder
        CSN = 1;
        
        CE = 1; __delay_us(15); CE = 0; // Gönderim teti?i
        
        __delay_ms(500); // 500ms aral?klarla gönder
    }
}



Receiver PIC

/*
* analog sinyalin alindigi vericiden okundugu, yani alici devrenin kodu
* Created on 29.12.2025 monday, 13:41
*/

#include <xc.h>

// CONFIGURATION BITS
#pragma config FOSC = HS        // HS Oscillator (High-speed crystal)
#pragma config WDTE = OFF      // Watchdog Timer Disable
#pragma config PWRTE = ON      // Power-up Timer Enable
#pragma config BOREN = ON      // Brown-out Reset Enable
#pragma config LVP = OFF        // Low Voltage Programming Disable
#pragma config CPD = OFF        // Data EEPROM Code Protection Disable
#pragma config WRT = OFF        // Flash Program Memory Write Protection Disable
#pragma config CP = OFF        // Flash Program Memory Code Protection Disable

#define _XTAL_FREQ 8000000      // 8MHz Kristal

#define CSN RC2
#define CE  RC1

void SPI_Init() // SPI pin yapilandirma
{
    TRISC3 = 0; // SCK
    TRISC5 = 0; // MOSI
    TRISC4 = 1; // MISO
    SSPSTAT = 0x40; // CKE=1
    SSPCON = 0x20;  // Master mode, Fosc/4, SSPEN=1
}

uint8_t SPI_Write(uint8_t data) // tek komutlar icin
{
    SSPBUF = data;
    while(!BF);
    return SSPBUF;
}

void NRF_Command(uint8_t reg, uint8_t value) // yazma/okuma
{
    CSN = 0;
    SPI_Write(0x20 | reg); // Yazma komutu + Register adresi
    SPI_Write(value);
    CSN = 1;
}

uint8_t saved_data = 0;

void main() {
    SPI_Init();
    TRISC1 = 0; 
    TRISC2 = 0;
    
    // NRF Ayarlar? (0x7B: IRQ kapal?, CRC 1-byte, PWR_UP=1, PRX)
    NRF_Command(0x00, 0x7B); // bekleyen taraf oldugu icin RX modda ayarl?
    NRF_Command(0x11, 1);    // 1 Byte bekliyoruz -payload length-
    
    CE = 1; // Sürekli dinleme modu aktif
    
    while(1) {
        // STATUS register'?n? oku (0x07)
        CSN = 0;
        uint8_t status = SPI_Write(0x07); // status register'?n? okumak için
        CSN = 1;
        
        if(status & 0x40) // RX_DR biti (6. bit) 1 mi? Veri geldi mi?
        { 
            CSN = 0;
            SPI_Write(0x61);        // R_RX_PAYLOAD komutu
            saved_data = SPI_Write(0xFF); // Gelen veriyi oku ve kaydet
            CSN = 1;
            
            // Kesme bayra??n? temizle (6. biti 1 yazarak temizlenir)
            NRF_Command(0x07, 0x40); 
        }
        __delay_ms(10); // loop data rate
    }
}