void SetRX_Mode(void)
{
CE=0;
SPI_RW_Reg(WRITE_REG+STATUS,0xff);
SPI_RW_Reg(FLUSH_RX, 0x00);
SPI_RW_Reg(WRITE_REG + CONFIG2, 0x7f); // IRQ收发完成中断响应，16位CRC ，主接收
CE = 1;
inerDelay_us(2600);
}
void nRF24L01_TxPacket(unsigned char * tx_buf)
{
CE=0; //StandBy I模式
SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, TX_ADR_WIDTH); // 装载接收端地址
SPI_Write_Buf(WR_TX_PLOAD, tx_buf, TX_PLOAD_WIDTH); // 装载数据
SPI_RW_Reg(WRITE_REG + CONFIG, 0x0e); // IRQ收发完成中断响应，16位CRC，主发送
CE=1; //置高CE，激发数据发送
inerDelay_us(10);
}
void nRF24L01_TxPacket(unsigned char * tx_buf)
{
SPI_RW_Reg(WRITE_REG+STATUS,0xff);
SPI_RW_Reg(0xE1,0xff);
CE=0;
SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, RX_ADDRESS, RX_ADR_WIDTH); // 写接收端地址
SPI_Write_Buf(WR_TX_PLOAD, tx_buf, TX_PLOAD_WIDTH);
CE=1;
inerDelay_us(200); //CE高电平大于10us才能进入发射模式
}
unsigned char nRF24L01_RxPacket(unsigned char* rx_buf)
{
unsigned char revale=0;
CE=0;
SPI_RW_Reg(WRITE_REG + CONFIG, 0x0f);
CE=1;
inerDelay_us(10);
inerDelay_us(10);
sta=SPI_Read(STATUS); // 读取状态寄存其来判断数据接收状况
// if(RX_DR) // 判断是否接收到数据
// {
CE=0; //SPI使能
SPI_Read_Buf(RD_RX_PLOAD,rx_buf,TX_PLOAD_WIDTH);// read receive payload from RX_FIFO buffer
revale =1; //读取数据完成标志
// }
SPI_RW_Reg(WRITE_REG+STATUS,0x07); //接收到数据后RX_DR,TX_DS,MAX_PT都置高为1，通过写1来清楚中断标志
return revale;
}
void nRF24L01_TxPacket(char * tx_buf)
{
RF24L01_CE_0 ; //StandBy
SPI_Write_Buf(0x2A, TX_ADDRESS, TX_ADR_WIDTH); // RX_Addr0 same as TX_Adr for Auto.Ack
SPI_Write_Buf(0x30, TX_ADDRESS, TX_ADR_WIDTH);
SPI_RW_Reg(0x20,0x0A);
SPI_Write_Buf(0xA0, tx_buf, 0x05); // Writes data to TX payload
RF24L01_CE_1; // finish
inerDelay_us(1000);
}
void nRF24L01_TxPacket(unsigned char * tx_buf)
{
CE=0; //StandBy I模式
SPI_RW_Reg(WRITE_REG + CONFIG, 0x0e);
sta=SPI_Read(STATUS); // 读取状态寄存其来判断数据接收状况
SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, TX_ADR_WIDTH); // 装载接收端地址
SPI_Write_Buf(WR_TX_PLOAD, tx_buf, TX_PLOAD_WIDTH); // 装载数据
CE=1; //置高CE，激发数据发送
inerDelay_us(10);
inerDelay_us(10);
SPI_RW_Reg(WRITE_REG + CONFIG, 0x0f); // IRQ收发完成中断响应，16位CRC，主发送
SPI_RW_Reg(WRITE_REG+STATUS,0x07);
/* if(TX_DS)
{
CE = 0; //SPI使能
SPI_RW_Reg(WRITE_REG+STATUS,0x07); //接收到数据后RX_DR,TX_DS,MAX_PT都置高为1，通过写1来清楚中断标志
R_S_Byte(0x73);
}
*/ CE=1; //置高CE，激发数据发送
inerDelay_us(10);
}
/*NRF24L01初始化
//***************************************************************************************/
void init_NRF24L01(void)
{
inerDelay_us(100);
CE=0; // chip enable
CSN=1; // Spi disable
SCK=0; // Spi clock line init high
SPI_Write_Buf(WRITE_REG + TX_ADDR, TX_ADDRESS, TX_ADR_WIDTH); // 寫本地地址
SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, RX_ADDRESS, RX_ADR_WIDTH); // 寫接收端地址
SPI_RW_Reg(WRITE_REG + EN_AA, 0x01); // 頻道0自動 ACK應答允許
SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x01); // 允許接收地址只有頻道0
SPI_RW_Reg(WRITE_REG + RF_CH, 0); // 設置工作頻率2.4GHZ，收發必需一致
SPI_RW_Reg(WRITE_REG + RX_PW_P0, RX_PLOAD_WIDTH); //設置接收數據長度，本次設置為20 bit
SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x07); //設置工作頻率1MHZ，發射功率為最大值0dB
}
/*NRF24L01初始化
//***************************************************************************************/
void init_NRF24L01(void)
{
inerDelay_us(100);
CE=0; // chip enable
CSN=1; // Spi disable
SCK=0; // Spi clock line init high
SPI_Write_Buf(WRITE_REG + TX_ADDR, TX_ADDRESS, TX_ADR_WIDTH); // 写本地地址
SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, RX_ADDRESS, RX_ADR_WIDTH); // 写接收端地址
SPI_RW_Reg(WRITE_REG + EN_AA, 0x01); // 频道0自动 ACK应答允许
SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x01); // 允许接收地址只有频道0，如果需要多频道可以参考Page21
SPI_RW_Reg(WRITE_REG + RF_CH, 0); // 设置信道工作为2.4GHZ，收发必须一致
SPI_RW_Reg(WRITE_REG + RX_PW_P0, RX_PLOAD_WIDTH); //设置接收数据长度，本次设置为20字节
SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x07); //设置发射速率为1MHZ，发射功率为最大值0dB
}
char SPI_RW(char data)
{
char i,temp=0;
for(i=0;i<8;i++) // output 8-bit
{
if((data & 0x80)==0x80)
{
RF24L01_MOSI_1; // output 'uchar', MSB to MOSI
}
else
{
RF24L01_MOSI_0;
}
//==============================================================================
data = (data << 1); // shift next bit into MSB..
temp<<=1;
inerDelay_us(2);
RF24L01_SCK_1; // Set SCK high..
if((P1IN&0x02))temp++; // capture current MISO bit
inerDelay_us(2);
RF24L01_SCK_0; // ..then set SCK low again
}
return(temp); // return read uchar
}
/*NRF24L01初始化
//***************************************************************************************/
void init_NRF24L01(void)
{
inerDelay_us(100);
CE=0; // chip enable
CSN=1; // Spi disable
SCK=0; // Spi clock line init high
// SPI_Write_Buf(WRITE_REG + TX_ADDR, TX_ADDRESS, TX_ADR_WIDTH); // 写本地地址
SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, RX_ADDRESS, RX_ADR_WIDTH); // 写接收端地址
SPI_RW_Reg(WRITE_REG + EN_AA, 0x01); // 频道0自动 ACK应答允许
SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x01); // 允许接收地址只有频道0，如果需要多频道可以参考Page21
SPI_RW_Reg(WRITE_REG + SETUP_AW, 0x03); //设置地址宽度
SPI_RW_Reg(WRITE_REG + SETUP_RETR, 0x00); //自动重发
SPI_RW_Reg(WRITE_REG + RF_CH, 0x00); //设置信道工作为2.4GHZ，收发必须一致
SPI_RW_Reg(WRITE_REG + RX_PW_P0, 0x3f); //设置接收数据长度，本次设置为32字节
SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x07); //设置发射速率为1MHZ，发射功率为最大值0dB
SPI_RW_Reg(WRITE_REG + CONFIG, 0x0e); // IRQ收发完成中断响应，16位CRC，主发送
}
uchar nRF24L01_RxPacket(uchar *rx_buf)
{
uchar revale=0;
SPI_Write_Buf(WRITE_REG + RX_ADDR_P0,RX0_ADDRESS, RX_ADR_WIDTH);
CE=0;
SPI_RW_Reg(WRITE_REG + CONFIG, 0x0f); // IRQ收发完成中断响应，16位CRC ，主接收
CE = 1;
inerDelay_us(130);
sta=SPI_Read(STATUS); // 读取状态寄存其来判断数据接收状况
if(RX_DR) // 判断是否接收到数据
{
CE = 0; //SPI使能
SPI_Read_Buf(RD_RX_PLOAD,rx_buf,RX_PLOAD_WIDTH);// read receive payload from RX_FIFO buffer
revale =1; //读取数据完成标志
switch(sta%16/2)
{
case 0: {
write_com(0x80+0x43);
write_data((rx_buf[1]*256+rx_buf[2])/100%10+48);
write_data(((rx_buf[1]*256+rx_buf[2])/10)%10+48);
write_data('.');
write_data((rx_buf[1]*256+rx_buf[2])%10+48);
write_data(0xdf);
write_data('c');
break;
}
case 1: {
write_com(0x80+0x03);
write_data(((rx_buf[1]*256+rx_buf[2])/100)%10+48);
write_data(((rx_buf[1]*256+rx_buf[2])/10)%10+48);
write_data('.');
write_data((rx_buf[1]*256+rx_buf[2])%10+48);
write_data(0xdf);
write_data('c');
break;
}
}
}
SPI_RW_Reg(WRITE_REG+STATUS,sta); //接收到数据后RX_DR,TX_DS,MAX_PT都置高为1，通过写1来清楚中断标志
return revale;
}
/**************************************************/
char SPI_Read(char reg)
{
char reg_val;
RF24L01_CSN_0; // CSN low, initialize SPI communication...
SPI_RW(reg); // Select register to read from..
reg_val = SPI_RW(0); // ..then read registervalue
RF24L01_CSN_1; // CSN high, terminate SPI communication
return(reg_val); // return register value
}
char SPI_RW_Reg(char reg, char value)
{
char status1;
RF24L01_CSN_0; // CSN low, init SPI transaction
status1 = SPI_RW(reg); // select register
SPI_RW(value); // ..and write value to it..
RF24L01_CSN_1; // CSN high again
return(status1); // return nRF24L01 status uchar
}
char SPI_W_Reg(char reg){
char status1;
RF24L01_CSN_0; // CSN low, init SPI transaction
status1 = SPI_RW(reg); // select register
RF24L01_CSN_1; // CSN high again
return(status1);
}
char SPI_Read_Buf(char reg, char *pBuf, char chars)
{
char status2,uchar_ctr;
RF24L01_CSN_0; // Set CSN low, init SPI tranaction
status2 = SPI_RW(reg); // Select register to write to and read status uchar
for(uchar_ctr=0;uchar_ctr<chars;uchar_ctr++)
{
pBuf[uchar_ctr] = SPI_RW(0); //
}
RF24L01_CSN_1; // Set CSN high
return(status2); // return nRF24L01 status uchar
}
char SPI_Write_Buf(char reg, char *pBuf, char chars)
{
char status1,uchar_ctr;
RF24L01_CSN_0; // Set CSN low, init SPI tranaction
status1 = SPI_RW(reg); // Select register to write to and read status byte
for(uchar_ctr=0; uchar_ctr<chars; uchar_ctr++) // then write all byte in buffer(*pBuf)
{
SPI_RW(*pBuf++);
}
RF24L01_CSN_1; // Set CSN high
return(status1); //
}
void SetRX_Mode(void)
{
RF24L01_CE_0 ;
SPI_RW_Reg(WRITE_REG + CONFIG, 0x3B); // Set PWR_UP bit, enable CRC(2 bytes) & Prim:RX. RX_DR enabled..
RF24L01_CE_1; // Set CE pin high to enable RX device
inerDelay_us(1000);//delay for about 1 second
}
char nRF24L01_RxPacket(char* rx_buf)
{
char revale=0;
sta=SPI_Read(STATUS); // read register STATUS's value
if(sta&0x40) // success!
{
RF24L01_CE_0 ; //SPI enable
SPI_Read_Buf(RD_RX_PLOAD,rx_buf,TX_PLOAD_WIDTH);// read receive payload from RX_FIFO buffer
revale =1; //set flag to 1
}
SPI_RW_Reg(WRITE_REG+STATUS,sta);
return revale;
}
void nRF24L01_TxPacket(char * tx_buf)
{
RF24L01_CE_0 ; //StandBy
SPI_Write_Buf(0x2A, TX_ADDRESS, TX_ADR_WIDTH); // RX_Addr0 same as TX_Adr for Auto.Ack
SPI_Write_Buf(0x30, TX_ADDRESS, TX_ADR_WIDTH);
SPI_RW_Reg(0x20,0x0A);
SPI_Write_Buf(0xA0, tx_buf, 0x05); // Writes data to TX payload
RF24L01_CE_1; // finish
inerDelay_us(1000);
}
//****************************************************************************************
//NRF24L01 init
//***************************************************************************************/
void init_NRF24L01(void)
{
inerDelay_us(1000);
RF24L01_CE_0 ; // chip enable
RF24L01_CSN_1; // Spi disable
RF24L01_SCK_0; // Spi clock line init high
inerDelay_us(15);
SPI_Write_Buf(0x2B, TX_ADDRESS, TX_ADR_WIDTH);
inerDelay_us(15);
SPI_RW_Reg(WRITE_REG + RF_CH, 0x00);
inerDelay_us(20);
//SPI_RW_Reg(WRITE_REG + SETUP_RETR, 0x00);
inerDelay_us(20);
SPI_RW_Reg(0x25,0x00);
SPI_RW_Reg(0x31, 0x05);
inerDelay_us(20);
SPI_RW_Reg(0x32, 0x05);
inerDelay_us(20);
SPI_RW_Reg(WRITE_REG + RF_SETUP, 0b00100110);
inerDelay_us(20);
SPI_RW_Reg(0x31, 0x05);
inerDelay_us(20);
SPI_RW_Reg(0x32, 0x05);
inerDelay_us(20);
SPI_RW_Reg(0x21, 0x00); //disable acks!!
inerDelay_us(20);
SPI_RW_Reg(0x20, 0x00);
inerDelay_us(20);
SPI_RW_Reg(0x27, 0x30);
inerDelay_us(20);
SPI_W_Reg(FLUSH_RX);
inerDelay_us(20);
}
