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AVR+nrf24L01 receive mode ?

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AVR+nrf24L01 receive mode ?

By Haihong Li
-  Thu Sep 27, 2007 8:15 am #35643
Hi,
I have atmeg168v with the nrf24L01. I have made use of the Crash_Maxed's code .Here ,thanks for his help.
Now the transmitter can give the TX_DS interrupt but the reciever can't gets the RX_DR interrupt and can't get any data in the RX FIFO. After .So i think the trans is working well.
I am able to communicate through SPI to the nrf24L01.I read Internal regs that i used and they are set right but the reciever wont recieve any bytes.
These are part of code.
tx code :
Code: Select all
 void main(void)
{
unsigned int i;
unsigned char temp0;
CLI();
PortInit();
timer0_init();
timer1_init();
Usart_init();
TIMSK1|=(1<<TOIE1);             //定时器开中断
SPI_MasterInit(); 
SEI(); 
while(1)

{	
         CSN_1;
		
         for(i=0; i<15; i++) 
        { 
             Usart_transmit(0x11);
             delay_ms(10); 
        } 
        Usart_transmit(0x22);
        config_ptx();
        Usart_transmit(0x33);
        //send a packet
        CSN_0; 
        SPI_MasterTransmit(0xE1); 
        CSN_1; 
		
        CSN_0; 
        SPI_MasterTransmit(0xA0); 
        SPI_MasterTransmit(0xE7); 
        SPI_MasterTransmit(0xE7); 
        SPI_MasterTransmit(0xE7); 
        SPI_MasterTransmit(0xE7); 
        CSN_1; 
		
        CSN_0; 
        SPI_MasterTransmit(0xA0); 
        SPI_MasterTransmit(0xE7); 
        SPI_MasterTransmit(0xE7); 
        SPI_MasterTransmit(0xE7); 
        SPI_MasterTransmit(0xE7); 
        CSN_1;
		
        CSN_0; 
        SPI_MasterTransmit(0xA0); 
        SPI_MasterTransmit(0xE7); 
        SPI_MasterTransmit(0xE7); 
        SPI_MasterTransmit(0xE7); 
        SPI_MasterTransmit(0xE7); 
        CSN_1;
		
       		
        CSN_0; 
        SPI_MasterTransmit(0x07); 
        temp0 = SPI_MasterTransmit(0x00);
        Usart_transmit(SPDR);

		
        Usart_transmit(0x44); 
        CSN_1; 
		
        Usart_transmit(0x55);
		
        CE_1; //activate transmitter 

        delay_ms(1); 
		
        CE_0;; //disable transmitter 
        
        delay_ms(20); //Debugging - can measure the PTX's IRQ line with a 
                       //logic probe, voltmeter, or o-scope to make sure line is low 
					   
       CSN_0; 
       SPI_MasterTransmit(0x07); //Read the status register 
       temp0 = SPI_MasterTransmit(0x00); 
       Usart_transmit(SPDR);
       Usart_transmit(0x66);
       CSN_1; 
        
       CSN_0; 
       SPI_MasterTransmit(0x27); //Clear the TX_DS bit in the status register 
       SPI_MasterTransmit(0x20); 
       CSN_1; 
		
       CSN_0; 
       SPI_MasterTransmit(0x07); 
       temp0 = SPI_MasterTransmit(0x00); 
       Usart_transmit(temp0);
       Usart_transmit(0x77);
       CSN_1; 
       delay_ms(20);
	  
 }
 
}
Code: Select all
void config_ptx(void) 
{  
     
    //config PTX 
        CSN_0; 
        SPI_MasterTransmit(0x20); 
        SPI_MasterTransmit(0x0a); //0x5c
        CSN_1; 
        
        CSN_0; 
        SPI_MasterTransmit(0x24); 
        SPI_MasterTransmit(0x00); 
        CSN_1; 
        
        CSN_0; 
        SPI_MasterTransmit(0x23); 
        SPI_MasterTransmit(0x03); 
        CSN_1; 
        
        CSN_0; 
        SPI_MasterTransmit(0x22); 
        SPI_MasterTransmit(0x00); //0x01
        CSN_1; 
		
        CSN_0; 
        SPI_MasterTransmit(0x26); 
        SPI_MasterTransmit(0x07); 
        CSN_1; 
        
        CSN_0; 
        SPI_MasterTransmit(0x25); 
        SPI_MasterTransmit(40);//0x02 
        CSN_1; 
		
        CSN_0; 
        SPI_MasterTransmit(0x31); 
        SPI_MasterTransmit(0x00); //RX_PW_P0
        CSN_1; 
        
        CSN_0; 
        SPI_MasterTransmit(0x30); 
        SPI_MasterTransmit(0xE7); 
        SPI_MasterTransmit(0xE7); 
        SPI_MasterTransmit(0xE7); 
        SPI_MasterTransmit(0xE7); 
        SPI_MasterTransmit(0xE7); 
        CSN_1; 
        
        CSN_0; 
        SPI_MasterTransmit(0x2A); 
        SPI_MasterTransmit(0xE7); 
        SPI_MasterTransmit(0xE7); 
        SPI_MasterTransmit(0xE7); 
        SPI_MasterTransmit(0xE7); 
        SPI_MasterTransmit(0xE7); 
        CSN_1;
		
        CSN_0; 
        SPI_MasterTransmit(0x21); 
        SPI_MasterTransmit(0x00); 
        CSN_1; 
        
        CSN_0; 
        SPI_MasterTransmit(0x27); 
        SPI_MasterTransmit(0x7E); 
        CSN_1; 
        
        CSN_0; 
        SPI_MasterTransmit(0x20); 
        SPI_MasterTransmit(0x0A); //5E
        CSN_1;           
}
rx code:
Code: Select all
        	
main()
{
unsigned char temp0;
CLI();
PortInit();
timer0_init();
timer1_init();
Usart_init();
TIMSK1|=(1<<TOIE1);             //定时器开中断
SPI_MasterInit(); 
SEI(); 
    while(1)
        config_prx();					
        Usart_transmit(0x22);
        delay_us(1000);
        CE_0;
	
        CSN_0; 
        SPI_MasterTransmit(0x61); 
        temp0 = SPI_MasterTransmit(0x00); 
        Usart_transmit(SPDR); //Print out received data 
        temp0 = SPI_MasterTransmit(0x00); 
        Usart_transmit(SPDR); //Print out received data 
        temp0 = SPI_MasterTransmit(0x00); 
        Usart_transmit(SPDR); //Print out received data 
        temp0 = SPI_MasterTransmit(0x00); 
        Usart_transmit(SPDR); //Print out received data 
        temp0 = SPI_MasterTransmit(0x00); 
        Usart_transmit(SPDR); //Print out received data 
        CSN_1; 
        
        CSN_0; 
        SPI_MasterTransmit(0xE2); //Flush RX FIFO 
        CSN_1; 

        Usart_transmit(0x33);
		
        CSN_0; 
        SPI_MasterTransmit(0x07); //Read the status register 
        temp0 = SPI_MasterTransmit(0x00); 
        Usart_transmit(SPDR); //Print out status register 
        CSN_1; 
        
        CSN_0; 
        SPI_MasterTransmit(0x27); //Clear the RX_DR bit in the status register 
        SPI_MasterTransmit(0x40); 
        CSN_1; 
        
        CSN_0; 
        SPI_MasterTransmit(0x07); 
        temp0 = SPI_MasterTransmit(0x00);  
        Usart_transmit(SPDR); //Print out status register 
        CSN_0; 
				
	
     CE_1;
        Usart_transmit(0x44);
        delay_ms(500);		
      showregisters_prx();
      }
}
Code: Select all
void config_prx(void) 
{        
        CE_0;
        //config PRX 
        CSN_1;
        delay_us(10);
        CSN_0; 
        SPI_MasterTransmit(0x20); 
        //SPI_MasterTransmit(0x3D); //3D
		SPI_MasterTransmit(0x0D); //0D
        CSN_1;
        
        showregisters_prx_macro(0x00);//读00地址寄存器
		
     CSN_0; 
        SPI_MasterTransmit(0x21); 
        SPI_MasterTransmit(0x00); 
        CSN_1; 
        
        CSN_0; 
        SPI_MasterTransmit(0x22); 
        SPI_MasterTransmit(0x01); //enable pipe0
        CSN_1; 
		
        CSN_0; 
        SPI_MasterTransmit(0x23); 
        SPI_MasterTransmit(0x03); 
        CSN_1; 
		
        CSN_0; 
        SPI_MasterTransmit(0x24); 
        SPI_MasterTransmit(0x00); //SETUP_RETP
        CSN_1;
		
        showregisters_prx_macro(0x03);//读00地址寄存器
		
     CSN_0; 
        SPI_MasterTransmit(0x26); 
        SPI_MasterTransmit(0x07); 
        CSN_1; 
        
        CSN_0; 
        SPI_MasterTransmit(0x2A); //use the same address on the RX device as the TX device
       SPI_MasterTransmit(0xE7);
       SPI_MasterTransmit(0xE7);
       SPI_MasterTransmit(0xE7);
       SPI_MasterTransmit(0xE7);
       SPI_MasterTransmit(0xE7);
       CSN_1; 
		
        CSN_0; 
        SPI_MasterTransmit(0x2B); //use the same address on the RX device as the TX device
       SPI_MasterTransmit(0xC2);
       SPI_MasterTransmit(0xC2);
       SPI_MasterTransmit(0xC2);
       SPI_MasterTransmit(0xC2);
       SPI_MasterTransmit(0xC2); //NEW ADD
        CSN_1; 
		
        CSN_0; 
        SPI_MasterTransmit(0x31); 
        //SPI_MasterTransmit(0x04); //接收4字节有效数据
		SPI_MasterTransmit(0x05); //接收5字节有效数据
      CSN_1; 
        
        CSN_0; 
        SPI_MasterTransmit(0x32); 
      SPI_MasterTransmit(0x08); //接收4字节有效数据
     CSN_1; 	//NEW ADD
		
        CSN_0; 
        SPI_MasterTransmit(0x25); 
        SPI_MasterTransmit(40); //0x02
        CSN_1; 
        
        CSN_0; 
        SPI_MasterTransmit(0x30); 
        SPI_MasterTransmit(0xE7);  
        SPI_MasterTransmit(0xE7); 
        SPI_MasterTransmit(0xE7); 
        SPI_MasterTransmit(0xE7); 
        SPI_MasterTransmit(0xE7); 
        CSN_1; 
        
        CSN_0; 
        SPI_MasterTransmit(0x20); 
        //SPI_MasterTransmit(0x3F);
		SPI_MasterTransmit(0x0b); //0x0f
        CSN_1; 
        
        showregisters_prx_macro(0x00);//读00地址寄存器

     CSN_0; 
        SPI_MasterTransmit(0xE2); 
        CSN_1; 
        delay_ms(5);
        CE_1; //activate receiver 
}

By brennen
-  Thu Sep 27, 2007 8:29 am #35647
I didn't see any glaring holes in your setup, but there are a ton of magic numbers. I would highly suggest migrating to my library (see my tag line below) and modifying the main() code, register definitions in nrf24l01.h, and SPI driver functions in my tutorials to work with your AVR.
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