Did not get "Constant carrier wave output for testing" working on nRF24L01+

[Daniy666]

Hello,

Like in the description, I dont get this to work. Im trying to get The nRF24L01+ connected to a PIC16LF18345. I did Some Pictures of the SPI logic and Here is a Part of the Code Ive written of the configuration for carrier Signal like described in the datasheet.

    while(1)
    {
    if(PORTCbits.RC4 == 0) //Startswitch
    {
    __delay_ms (2500);
        
    spi_start();
    spi_rx(0b00100000); //W + Reg CONFIG
    spi_rx(0x02); //PWR UP
    spi_stop();
    
    __delay_us(1700);
    
    spi_start();
    spi_rx(0b00100110); //W + Reg RF_SETUP
    spi_rx(0b10010110); 
    spi_stop();

    spi_start();
    spi_rx(0b00100101); //W + Reg RF_CH
    spi_rx(0x22); 
    spi_stop();

       while(1){
    PORTCbits.RC7 = 1;  //CE
                }
        }
    }

I have tried almost everything and so now im here and ask for help :) 

[Daniy666]

Here is some Addition Code which my help finding the Problem 

/// HERE A PAT OF MY INTERRUPT ROUTINE 

void interrupt ISR()
   {
    if (spi_Aktiv == 1)
    
    {
        if (SSP2STATbits.BF == 1)       //BUFFER FULL
        {
            SSP2IF = 0;                 //INTERRUPT FLAG
            spi_BF = 1;                 //BUFFER FULL bit für SPI.H
        }
    }

/// HERE IS MY SPI FILE (comments in german sry:/)

unsigned char spi_Aktiv = 0;    //Bit für ISR setzen bedeutet: Interrupt betrifft SPI
unsigned char spi_BF = 0;       //Fuffer Full detection Bit
void spi_init(){

//PORT B 
    PORTBbits.RB5 = 0;
    PORTBbits.RB7 = 0;
    TRISBbits.TRISB5 = 1;       //Eingang Data In
    TRISBbits.TRISB7 = 0;       //Ausgang Clock
    ANSELBbits.ANSB5 = 0;
    ANSELBbits.ANSB7 = 0;
    LATBbits.LATB5 = 0;
    LATBbits.LATB7 = 0;
    ODCONBbits.ODCB5 = 0;
    ODCONBbits.ODCB7 = 0;
    SLRCONBbits.SLRB5 = 0;
    SLRCONBbits.SLRB7 = 0;
    INLVLBbits.INLVLB5 = 0;
    INLVLBbits.INLVLB7 = 0;
    
 //PORT C   
    PORTCbits.RC1 = 0;
    PORTCbits.RC2 = 0;
    PORTCbits.RC6 = 0;
    PORTCbits.RC7 = 0;

    TRISCbits.TRISC1 = 1;       //Eingang Interrupt
    TRISCbits.TRISC2 = 0;       //Ausgang Data OUT
    TRISCbits.TRISC6 = 0;       //Ausgang Slave Select
    TRISCbits.TRISC7 = 0;       //Ausgang R/W

    ANSELCbits.ANSC1 = 0;
    ANSELCbits.ANSC2 = 0;
    ANSELCbits.ANSC6 = 0;
    ANSELCbits.ANSC7 = 0;

    LATCbits.LATC1 = 0;
    LATCbits.LATC2 = 0;
    LATCbits.LATC6 = 0;
    LATCbits.LATC7 = 0;

    ODCONCbits.ODCC1 = 0;
    ODCONCbits.ODCC2 = 0;
    ODCONCbits.ODCC6 = 0;
    ODCONCbits.ODCC7 = 0;

    SLRCONCbits.SLRC1 = 0;
    SLRCONCbits.SLRC2 = 0;
    SLRCONCbits.SLRC6 = 0;
    SLRCONCbits.SLRC7 = 0;

    INLVLCbits.INLVLC1 = 0;
    INLVLCbits.INLVLC2 = 0;
    INLVLCbits.INLVLC6 = 0;
    INLVLCbits.INLVLC7 = 0;

//PPS
//-Input
    INTPPS = 0b00010001;  // RC1 Interrupt
    
    //SSP2CLKPPS = 0b00001110; // Clock
    SSP2DATPPS = 0b00001101; //RB5 Data
    //SSP2SSPPS = 0b00001101; //Slave Select
//-Output
    //RB5PPS = 0b00000000; // -> LATB5 SDI2 MISO
    RB7PPS = 0b00011010; // -> SCK2
    //RC1PPS = 0b00000000; // -> LATC1 INTERRUPT
    RC2PPS = 0b00011011; // -> SDO2 MOSI
    //RC6PPS = 0b00000000; // -> !SS  SlaveSelect
    //RC7PPS = 0b00000000; // -> LATC7 NRF R/W
//spi
    SSP2ADD = 0b11111111;  //Fosc/(4*(SSPADD[31]+1)) -> 250Kbit
    PORTCbits.RC6 = 1;      //!Slave Select deaktivieren
    SSP2STAT = 0b11000000; // CKE = 1;
    SSP2CON1 = 0b00101010; // SSPEN; CKP = 0; use SSPADD
    SSP2CON3 = 0b00000000; // Bit 4 BOEN vlt falsch
//Interrupt
    INTCONbits.GIE = 1; //GIE + PEIE = 1
    INTCONbits.PEIE = 1;
    INTCONbits.INTEDG = 1; //Positive Flanke
    PIE0bits.IOCIE = 1; //Periperie Interrupt freischalten
    IOCCP = 0b00000010; //RC1 = interrupt mit Positiver Flanke
    SSP2IE = 1;
}


void spi_start(){
    spi_Aktiv = 1;          //Für interrupt
    PORTCbits.RC6 = 0;      //!Slave Select aktivieren
}

unsigned char spi_rx(unsigned char txbyte){

    SSP2BUF = txbyte;       //Daten in Buffer Schreiben und Übertragung starten
    while(spi_BF == 0){}    //Warten bis Buffer Voll ist (interrupt))
    spi_BF = 0;
    return SSP2BUF;         // Daten aus Buffer Lesen und in spi_rx zurückgeben
                    }

void spi_stop(){

    spi_Aktiv = 0;
    PORTCbits.RC6 = 1;      //!Slave Select deaktivieren
    spi_BF = 0;             ////Fuffer Full detection Bit löschen
    
}

I have not implemented the Interrupt Routine because there was no Need for the RF carrier Signal in the PDF but if it will help i will add it just tell me.

[Daniy666]

For "I have not implemented the Interrupt Routine because there was no Need for the RF carrier Signal in the PDF but if it will help i will add it just tell me." I mean the Interrupt pin on the nRF, the Code Ive posted is already implemented an working