need help!about nrf24L01

Wireless & IoT
1

the PTX seems work and IRQ interrupt appears.But I can’t get the IRQ interrupt on the PRX.Maybe 1/1000 i can find the IRQ ping goes to low,and read the correct data from FiFo.So i think it’s weird and i can’t get the condition when it happened.I don’t konw what’s wrong?

void RX_Mode(void)

{

NRF24L01_SPI_P1OUT &= ~NRF24L01_SPI_CE; //Idle ,No data transmit

SPI_RW_Reg(FLUSH_RX,0);

SPI_Write_Buf(WRITE_REG + TX_ADDR, TX_ADDRESS, TX_ADR_LENGTH); // Writes TX_Address to nRF24L01

SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, TX_ADR_LENGTH);//RX_Addr0

SPI_RW_Reg(WRITE_REG + EN_AA, 0x00); // disable Auto.Ack:Pipe0

SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x01); // Enable Pipe0

SPI_RW_Reg(WRITE_REG + RF_CH, 92); // Select RF channel 40

SPI_RW_Reg(WRITE_REG + RX_PW_P0, TX_PLOAD_WIDTH); // Select same RX payload width as TX Payload width

SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x0f);

SPI_RW_Reg(WRITE_REG + CONFIG, 0x0f);

DelayMs(5);

NRF24L01_SPI_P1OUT |= NRF24L01_SPI_CE;

DelayMs(20);

}

void TX_Mode(void)

{

NRF24L01_SPI_P1OUT &= ~NRF24L01_SPI_CE; //Idle ,No data transmit

SPI_RW_Reg(WRITE_REG + SETUP_AW,0x02);

SPI_Write_Buf(WRITE_REG + TX_ADDR, TX_ADDRESS, TX_ADR_LENGTH); // Writes TX_Address to nRF24L01

SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, TX_ADR_LENGTH); // RX_Addr0 same as TX_Adr for Auto.Ack

SPI_Write_Buf(WR_TX_PLOAD, TX_PAYLOAD, TX_PLOAD_WIDTH); // Writes data to TX payload

SPI_RW_Reg(WRITE_REG + EN_AA, 0x00); // Enable Auto.Ack:Pipe0

SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x01); // Enable Pipe0

SPI_RW_Reg(WRITE_REG + SETUP_RETR, 0x00); // 500μs + 86μs, 10 retrans

SPI_RW_Reg(WRITE_REG + RF_CH, 92); // Select RF channel 40

SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x0f); // TX_PWR:0dBm, Datarate:2Mbps, LNA:HCURR

SPI_RW_Reg(WRITE_REG + CONFIG, 0x0e); // Set PWR_UP bit, enable CRC(2 bytes) & Prim:TX. MAX_RT & TX_DS enabled

DelayMs(2);

NRF24L01_SPI_P1OUT |= NRF24L01_SPI_CE;

DelayUs(30);

NRF24L01_SPI_P1OUT &= ~NRF24L01_SPI_CE;

}

hookups1534

viewtopic.php?t=6946&highlight=nrf24l01

just like this! :shock:

2

From a first view, I see that in RX you are disabling automatic ACK, and in TX you are enabling it. Enabling autoACK enables Enhanced Shockburst mode, which generates a different packet format, so you won’t receive anything. You should have the same configuration for this register both at TX and RX.

3

lucicop:
From a first view, I see that in RX you are disabling automatic ACK, and in TX you are enabling it. Enabling autoACK enables Enhanced Shockburst mode, which generates a different packet format, so you won’t receive anything. You should have the same configuration for this register both at TX and RX.

sorry,wrong remark!it should be “disable auto ack”

4

Oh!I forget "SPI_RW_Reg(WRITE_REG + SETUP_AW,0x02); " on PRX

Now it works well!