Nrf24L01无线收发子程序(2)

for(byte_ctr=0; byte_ctr<bytes; byte_ctr++) // then write all byte in buffer(*pBuf)

SPI_RW(*pBuf++);

CSN = 1; // Set CSN high again

return(status); // return nRF24L01 status byte

本程序 整理于 无线收发模块 包括api.h和89lv51.c 已通过开发板调试

}

/**************************************************/

/**************************************************

Function: RX_Mode();

Description:

This function initializes one nRF24L01 device to

RX Mode, set RX address, writes RX payload width,

select RF channel, datarate & LNA HCURR.

After init, CE is toggled high, which means that

this device is now ready to receive a datapacket.

/**************************************************/

void RX_Mode(void)

{

CE=0;

SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, TX_ADR_WIDTH); // Use the same address on the RX device as the TX device

SPI_RW_Reg(WRITE_REG + EN_AA, 0x01); // Enable Auto.Ack:Pipe0

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

SPI_RW_Reg(WRITE_REG + RF_CH, 40); // 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, 0x07); // TX_PWR:0dBm, Datarate:2Mbps, LNA:HCURR

SPI_RW_Reg(WRITE_REG + CONFIG, 0x0f); // Set PWR_UP bit, enable CRC(2 bytes) & Prim:RX. RX_DR enabled..

CE = 1; // Set CE pin high to enable RX device

// This device is now ready to receive one packet of 16 bytes payload from a TX device sending to address

// '3443101001', with auto acknowledgment, retransmit count of 10, RF channel 40 and datarate = 2Mbps.

}

/**************************************************/

/**************************************************

Function: TX_Mode();

Description:

This function initializes one nRF24L01 device to

TX mode, set TX address, set RX address for auto.ack,

fill TX payload, select RF channel, datarate & TX pwr.

PWR_UP is set, CRC(2 bytes) is enabled, & PRIM:TX.

ToDo: One high pulse(>10us) on CE will now send this

packet and expext an acknowledgment from the RX device.

/**************************************************/

void TX_Mode(void)

{

本程序 整理于 无线收发模块 包括api.h和89lv51.c 已通过开发板调试

CE=0;

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

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

SPI_Write_Buf(WR_TX_PLOAD, tx_buf, TX_PLOAD_WIDTH); // Writes data to TX payload SPI_RW_Reg(WRITE_REG + EN_AA, 0x01); // Enable Auto.Ack:Pipe0

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

SPI_RW_Reg(WRITE_REG + SETUP_RETR, 0x1a); // 500us + 86us, 10 retrans...

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

SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x07); // 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..

CE=1;

}