nrf24l01 sending from f3 to f0 discovery

[urban]

Posted on May 18, 2015 at 22:35

Hello!

I'm trying to pair two nrf24l01 with f3 and f0 discovery boards. I've checked all the registers and they are initialized correctly, but I still can't receive anything. I don't have access to a spectrum analyser, so I'm asking for your help, if there are some things I'm missing out. Thank you in advance! Receiver code: (I didn't paste the discovery's initialization code above)

int i = 0;
uint8_t rec = 0;
uint8_t buf[10];
uint8_t test = 0;
setRX();
while(1)
{
nrf24_flushRX();
nrf24_WriteByte(NRF24_CONFIG, 0x0f);
NRF24_CE_LOW();
rec = nrf24_ReadByte(NRF24_STATUS);
if(rec & 0x40){
nrf24_ReadPayload(NRF24_R_RX_PAYLOAD, buf, 32);
}
NRF24_CE_HIGH();
nrf24_WriteByte(NRF24_STATUS, 0x40);
}
}
void setRX(void){
int rec = 0;
uint8_t str[15];
uint8_t tx_address[5] = {0xe7, 0xe7, 0xe7, 0xe7, 0xe7};
uint8_t rx_address[5] = {0x7e, 0x7e, 0x7e, 0x7e, 0x7e};
NRF24_CE_LOW();
nrf24_WriteMultipleBytes(NRF24_RX_ADDR_P1, rx_address, 5);
nrf24_WriteMultipleBytes(NRF24_RX_ADDR_P0, tx_address, 5);
nrf24_WriteMultipleBytes(NRF24_TX_ADDR, tx_address, 5);
nrf24_WriteByte(NRF24_RX_PW_P0, 0x20);
nrf24_WriteByte(NRF24_RX_PW_P1, 0x20);
nrf24_WriteByte(NRF24_RX_PW_P2, 0x20);
nrf24_WriteByte(NRF24_RX_PW_P3, 0x20);
nrf24_WriteByte(NRF24_RX_PW_P4, 0x20);
nrf24_WriteByte(NRF24_RX_PW_P5, 0x20);
nrf24_WriteByte(NRF24_RF_CH, 15);
nrf24_WriteByte(NRF24_RF_SETUP, 0x06);
nrf24_WriteByte(NRF24_EN_AA, 0x3f);
rec = nrf24_ReadByte(NRF24_RF_CH);
nrf24_WriteByte(NRF24_SETUP_RETR, 0x4f);
nrf24_WriteByte(NRF24_EN_RXADDR, 0x3f);
nrf24_WriteByte(NRF24_DYNPD, 0x00);
nrf24_WriteByte(NRF24_CONFIG, 0x0f); //SPI is available in power down mode, although radio can't transmit
NRF24_CE_HIGH();
}

Transmitter code:

int i = 0;
uint8_t rec = 0;
uint8_t buf[10];
uint8_t test = 0;
setRX();
uint8_t dataOut[32];
while(1)
{
sprintf((char *)dataOut, ''abcdefghijklmno'');
i = 150;
nrf24_WriteByte(NRF24_CONFIG, 0x0e);
nrf24_flushTX();
NRF24_CE_LOW();
nrf24_WritePayload(NRF24_W_TX_PAYLOAD, dataOut, 32);
NRF24_CE_HIGH();
while(i--);
nrf24_WriteByte(NRF24_STATUS, 0x20);
}
}
void setRX(void){
int rec = 0;
uint8_t str[15];
uint8_t rx_address1[5] = {0xe7, 0xe7, 0xe7, 0xe7, 0xe7};
uint8_t tx_address[5] = {0x7e, 0x7e, 0x7e, 0x7e, 0x7e};
NRF24_CE_LOW();
nrf24_WriteMultipleBytes(NRF24_RX_ADDR_P1, rx_address1, 5);
nrf24_WriteMultipleBytes(NRF24_RX_ADDR_P0, tx_address, 5);
nrf24_WriteMultipleBytes(NRF24_TX_ADDR, tx_address, 5);
nrf24_WriteByte(NRF24_RX_PW_P0, 0x20);
nrf24_WriteByte(NRF24_RX_PW_P1, 0x20);
nrf24_WriteByte(NRF24_RX_PW_P2, 0x20);
nrf24_WriteByte(NRF24_RX_PW_P3, 0x20);
nrf24_WriteByte(NRF24_RX_PW_P4, 0x20);
nrf24_WriteByte(NRF24_RX_PW_P5, 0x20);
nrf24_WriteByte(NRF24_RF_CH, 15);
nrf24_WriteByte(NRF24_RF_SETUP, 0x06);
nrf24_WriteByte(NRF24_EN_AA, 0x3f);
rec = nrf24_ReadByte(NRF24_RF_CH);
nrf24_WriteByte(NRF24_SETUP_RETR, 0x4f);
nrf24_WriteByte(NRF24_EN_RXADDR, 0x3f);
nrf24_WriteByte(NRF24_DYNPD, 0x00);
nrf24_WriteByte(NRF24_CONFIG, 0x0e); //SPI is available in power down mode, although radio can't transmit
NRF24_CE_HIGH();
}