class nRFObj{
public:
nRFObj(void);//nRFObj的构造函数
void Init(void);//初始化
void ReceiveCallback(void);//接收无线回调函数
void SendCallback(void);//发送无线回调函数
private:
void SpiInit(void);//SPI接口初始化
void nRFInit(void);//RF模块初始化
unsigned char SpiReadWrite(unsigned char);//SPI一体化读写程序
unsigned char ReadStatus(void);//读RF模块状态
void SetConfig(unsigned long);//配置nRF905
void SetReceiveMode(void);//设置接收模式
void SetSendMode(void);//设置发送模式
void SendStart(void);//开始发送
public:
unsigned char ReceiveBuffer[32];//RF接收缓冲区
unsigned char SendBuffer[32];//RF发送缓冲区
unsigned char ReceiveCount;//RF接收缓冲区接收个数
unsigned char SendCount;//RF发送缓冲区发送个数
};
nRFObj::nRFObj(void)
{
Init ();
}
void nRFObj::Init(void)
{
SpiInit ();
nRFInit ();
}
void nRFObj::nRFInit(void)
{
PORTC |= (0 << TX_EN)//设置接收方式
|(0 << TRX_CE)//设置nRF905为待机方式
|(1 << PWR)//nRF905上电
|(0 << UPLCK);
PORTD |= (0 << CD)
|(0 << DR)
|(0 << AM);
DDRC |= (1 << TX_EN)
|(1 << TRX_CE)
|(1 << PWR)
|(0 << UPLCK);
EICRA = (0 << ISC11)
|(1 << ISC10)
|(0 << ISC01)
|(1 << ISC00);
EIMSK = (1 << INT1)
| (1 << INT0);
SetConfig(0);
SetReceiveMode();//设置接收模式
for (int i = 0; i < 32; i ++)
{
SendBuffer = 0;
ReceiveBuffer = 0;
}
}
void nRFObj::SpiInit(void)
{
/* 设置MOSI 和SCK 及SS 为输出，其他为输入 */
PORTB |= (1 << MOSI)
|(1 << MISO)
|(1 << SCK)
|(1 << SS);//关闭SPI
DDRB |= (1 << MOSI)
|(1 << MISO)
|(1 << SCK)
|(1 << SS);
/* 使能SPI 主机模式，设置时钟速率为fck/16 ,SPI方式0*/
SPCR = (1 << SPE)
|(1 << MSTR)
|(0 << CPOL)
|(0 << SPR0);
}
unsigned char nRFObj::SpiReadWrite(unsigned char cData)
{
/* 启动数据传输 */
SPDR = cData;
/* 等待传输结束 */
while(!(SPSR & (1 << SPIF)))
{
// __watchdog_reset ();
}
return SPDR;
}
unsigned char nRFObj::ReadStatus(void)
{
unsigned char val;
PORTB &= ~(1 << SS);//打开SPI
val = SpiReadWrite(RC);//读状态
PORTB |= (1 << SS);//关闭SPI
return val;//返回nRF905状态字
}
void nRFObj::SetSendMode(void)//设置发送模式
{
__nop();///
__nop();///
__nop();///
PORTC |= (1 << TX_EN);
__nop();
__nop();
__nop();
__nop();
__nop();
__nop();
__nop();
__nop();
__nop();
__nop();
__nop();
__nop();
__nop();
__nop();
__nop();
__nop();
__nop();
__nop();
__nop();
__nop();
PORTC &= ~(1 << TRX_CE);//设置nRF905为待机方式
__delay_cycles(1000);
}
void nRFObj::SetReceiveMode(void)//设置接收模式
{
__nop();
__nop();
__nop();
PORTC &= ~(1 << TX_EN);
__nop();
PORTC |= (1 << TRX_CE);//设置nRF905为工作方式
__nop();
__nop();
__nop();
}
void nRFObj::SendStart(void)
{
__nop();
__nop();
__nop();
/// _delay_loop_(1);
PORTC |= (1 << TRX_CE);//设置nRF905为工作方式
/// _delay_loop_(10);
__nop();
__nop();
__nop();
/*
__nop();
__nop();
__nop();
__nop();
__nop();
__nop();
__nop();
*/
PORTC &= ~(1 << TRX_CE);//设置nRF905为待机方式
/// _delay_loop_(1);
__nop();
__nop();
__nop();
}
void nRFObj::SetConfig(unsigned long nRFAddr)//配置nRF905
{
PORTC &= ~(1 << TRX_CE);//设置nRF905为待机方式
__nop();
PORTB &= ~(1 << SS);//打开SPI
SpiReadWrite(WC); // Write config command
SpiReadWrite(CH_NO_BYTE); //中心频率低8位
SpiReadWrite(PA_PWR_10dBm | HFREQ_PLL_433MHz); //发射+10dBm,发射频率433MHz,中心频率第9位=0
SpiReadWrite(TX_AFW_4BYTE | RX_AFW_4BYTE); //接收地址宽度4字节,发送地址宽度4字节
SpiReadWrite(RX_PW_32BYTE); //接收数据宽度32字节
SpiReadWrite(TX_PW_32BYTE); //发送数据宽度32字节
SpiReadWrite((nRFAddr >> 24)); //接收有效地址第1字节
SpiReadWrite((nRFAddr >> 16) & 0xff); //接收有效地址第2字节
SpiReadWrite((nRFAddr >> 8) & 0xff); //接收有效地址第3字节
SpiReadWrite(nRFAddr & 0xff); //接收有效地址第4字节
SpiReadWrite(CRC16_EN | XOF_16MHz); //CRC16模式使能,晶体振荡器频率16MHz
PORTB |= (1 << SS);//关闭SPI
if (PORTC & (1 << TX_EN))//再回到原来的无线收发模式
{
PORTC &= ~(1 << TRX_CE);//设置nRF905为待机方式
}
else
{
PORTC |= (1 << TRX_CE);//设置nRF905为工作方式
}
}
void nRFObj::ReceiveCallback(void)//无线接收模块
{
SetReceiveMode();//设置接收模式
if ((PIND & (1 << CD))//接收到CD信号
&& ((PIND & ((1 << AM) | (1 << DR))) == 0))//此时不应该有AM和DR信号
{
PORTC &= ~(1 << TRX_CE);//设置nRF905为待机方式
__nop();
PORTB &= ~(1 << SS);//打开SPI
SpiReadWrite(RRP);
for (int i = 0; i < 32; i ++)
{
ReceiveBuffer = SpiReadWrite(0xff);
}
PORTB |= (1 << SS);//关闭SPI
ReceiveCount = 32;//接收到32个字节的数据
PORTC |= (1 << TRX_CE);//设置nRF905为工作方式
// if ((ReceiveBuffer[30] == 0x55) && (ReceiveBuffer[31] == 0xaa))
// if (ReceiveBuffer[31] == 0xaa)
// {
PORTB |= (1 << BUZZER);
PORTB |= (1 << LED);
// }
}
}
void nRFObj::SendCallback(void)//无线发送模块
{
if ((PIND & ((1 << CD) | (1 <<AM) | (1 << DR))) == 0)//周边无射频信号
{
SetSendMode();//设置发送模式
PORTB |= (1 << LED);
__nop();
__nop();
__nop();
PORTB &= ~(1 << SS);//打开SPI
SpiReadWrite(WTA);//写发送地址
for (int i = 0; i < 4; i ++)
{
SpiReadWrite(SendBuffer);
}
PORTB |= (1 << SS);//关闭SPI
__nop();
__nop();
__nop();
PORTB &= ~(1 << SS);//打开SPI
SendBuffer[30] = 0x55;
SendBuffer[31] = 0xaa;
SpiReadWrite(WTP);// Write payload command
for (int i = 0; i < 32; i ++)
{
SpiReadWrite(SendBuffer);
}
PORTB |= (1 << SS);//关闭SPI
SendCount = 32;//接收到32个字节的数据
SendStart();//开始发送
SetReceiveMode();//设置接收模式
PORTB &= ~(1 << LED);
}
}
//以下是nRF905.h
#define RX_ADDRESS 0x00000000 //接收有效地址(本方)
#define TX_ADDRESS 0x12345678 //发送有效地址(对方)
#define CH_NO_FREQ_422_4MHz 0x000 //工作频率422.4MHz(433MHz频段最低频率)
#define CH_NO_FREQ_422_5MHz 0x001 //工作频率422.5MHz
#define CH_NO_FREQ_425_0MHz 0x01a //工作频率425.0MHz
#define CH_NO_FREQ_427_5MHz 0x033 //工作频率427.5MHz
#define CH_NO_FREQ_430_0MHz 0x04c //工作频率430.0MHz
#define CH_NO_FREQ_433_0MHz 0x06a //工作频率433.0MHz(433MHz频段基准频率)
#define CH_NO_FREQ_433_1MHz 0x06b //工作频率433.1MHz
#define CH_NO_FREQ_433_2MHz 0x06c //工作频率433.2MHz
#define CH_NO_FREQ_434_7MHz 0x07b //工作频率434.7MHz
#define CH_NO_FREQ_473_5MHz 0x1ff //工作频率473.5MHz(433MHz频段最高频率)
#define CH_NO_FREQ_844_8MHz 0x000 //工作频率844.8MHz(868MHz频段最低频率)
#define CH_NO_FREQ_862_0MHz 0x056 //工作频率862.0MHz
#define CH_NO_FREQ_868_0MHz 0x074 //工作频率868.0MHz(868MHz频段基准频率)
#define CH_NO_FREQ_868_2MHz 0x075 //工作频率868.2MHz
#define CH_NO_FREQ_868_4MHz 0x076 //工作频率868.4MHz
#define CH_NO_FREQ_869_8MHz 0x07d //工作频率869.8MHz
#define CH_NO_FREQ_895_8MHz 0x0ff //工作频率895.8MHz
#define CH_NO_FREQ_896_0MHz 0x100 //工作频率896.0MHz
#define CH_NO_FREQ_900_0MHz 0x114 //工作频率900.0MHz
#define CH_NO_FREQ_902_2MHz 0x11f //工作频率902.2MHz
#define CH_NO_FREQ_902_4MHz 0x120 //工作频率902.4MHz
#define CH_NO_FREQ_915_0MHz 0x15f //工作频率915.0MHz(915MHz频段基准频率)
#define CH_NO_FREQ_927_8MHz 0x19f //工作频率927.8MHz
#define CH_NO_FREQ_947_0MHz 0x1ff //工作频率947.0MHz(915MHz频段最高频率)
#define CH_NO_FREQ CH_NO_FREQ_430_0MHz //工作频率433.0MHz
//#define CH_NO_FREQ CH_NO_FREQ_844_8MHz //工作频率433.0MHz
#define CH_NO_BYTE CH_NO_FREQ & 0xff //工作频率低8位 Byte0 01101100
#define AUTO_RETRAN 0x20 //重发数据包 Byte1.5 0
#define RX_RED_PWR 0x10 //接收低功耗模式 Byte1.4 0
#define PA_PWR__10dBm 0x00 //输出功率-10dBm Byte1.3~2 00
#define PA_PWR_2dBm 0x04 //输出功率+2dBm Byte1.3~2
#define PA_PWR_6dBm 0x08 //输出功率+6dBm Byte1.3~2
#define PA_PWR_10dBm 0x0c //输出功率+10dBm Byte1.3~2
#define HFREQ_PLL_433MHz 0x00 //工作在433MHz频段 Byte1.1 0
#define HFREQ_PLL_868MHz 0x02 //工作在868MHz频段 Byte1.1
#define HFREQ_PLL_915MHz 0x02 //工作在915MHz频段 Byte1.1
#define CH_NO_BIT8 CH_NO_FREQ >> 8 //工作频率第9位 Byte1.0 0
#define TX_AFW_1BYTE 1 * 16 //发送地址宽度1字节 Byte2.7~4
#define TX_AFW_2BYTE 2 * 16 //发送地址宽度2字节 Byte2.7~4
#define TX_AFW_3BYTE 3 * 16 //发送地址宽度3字节 Byte2.7~4
#define TX_AFW_4BYTE 4 * 16 //发送地址宽度4字节 Byte2.7~4 100
#define RX_AFW_1BYTE 1 //接收地址宽度1字节 Byte2.3~0
#define RX_AFW_2BYTE 2 //接收地址宽度2字节 Byte2.3~0
#define RX_AFW_3BYTE 3 //接收地址宽度3字节 Byte2.3~0
#define RX_AFW_4BYTE 4 //接收地址宽度4字节 Byte2.3~0 100
#define RX_PW_1BYTE 1 //接收数据宽度1字节 Byte3.5~0
#define RX_PW_32BYTE 32 //接收数据宽度32字节 Byte3.5~0 00100000
#define TX_PW_1BYTE 1 //发送数据宽度1字节 Byte4.5~0
#define TX_PW_32BYTE 32 //发送数据宽度32字节 Byte4.5~0 00100000
#define RX_ADDRESS_0 RX_ADDRESS >> 24 //接收有效地址第1字节 Byte5 11100111
#define RX_ADDRESS_1 (RX_ADDRESS >> 16) & 0xff //接收有效地址第2字节 Byte6 11100111
#define RX_ADDRESS_2 (RX_ADDRESS >> 8) & 0xff //接收有效地址第3字节 Byte7 11100111
#define RX_ADDRESS_3 RX_ADDRESS & 0xff //接收有效地址第4字节 Byte8 11100111
#define CRC_MODE_16BIT 0x80 //CRC16模式 Byte9.7 1
#define CRC_MODE_8BIT 0x00 //CRC8模式 Byte9.7
#define CRC_EN 0x40 //CRC使能 Byte9.6 1
#define CRC16_EN 0xc0 //CRC16模式使能 Byte9.7~6 11
#define CRC8_EN 0x40 //CRC8模式使能 Byte9.7~6
#define XOF_20MHz 0x20 //晶体振荡器频率20MHz Byte9.5~3
#define XOF_16MHz 0x18 //晶体振荡器频率16MHz Byte9.5~3 100
#define XOF_12MHz 0x10 //晶体振荡器频率12MHz Byte9.5~3
#define XOF_8MHz 0x08 //晶体振荡器频率8MHz Byte9.5~3
#define XOF_4MHz 0x00 //晶体振荡器频率4MHz Byte9.5~3
#define UP_CLK_EN 0x40 //输出时钟使能 Byte9.2 1
#define UP_CLK_FREQ_500kHz 0x03 //输出时钟频率500kHz Byte9.1~0 11
#define UP_CLK_FREQ_1MHz 0x02 //输出时钟频率1MHz Byte9.1~0
#define UP_CLK_FREQ_2MHz 0x01 //输出时钟频率2MHz Byte9.1~0
#define UP_CLK_FREQ_4MHz 0x00 //输出时钟频率4MHz Byte9.1~0
#define UP_CLK_EN_500kHz 0x43 //输出时钟频率500kHz Byte9.2~0 111
#define UP_CLK_EN_1MHz 0x42 //输出时钟频率1MHz Byte9.2~0
#define UP_CLK_EN_2MHz 0x41 //输出时钟频率2MHz Byte9.2~0
#define UP_CLK_EN_4MHz 0x40 //输出时钟频率4MHz Byte9.2~0
#define TX_ADDRESS_0 TX_ADDRESS >> 24 //发送有效地址第1字节
#define TX_ADDRESS_1 (TX_ADDRESS >> 16) & 0xff //发送有效地址第2字节
#define TX_ADDRESS_2 (TX_ADDRESS >> 8) & 0xff //发送有效地址第3字节
#define TX_ADDRESS_3 TX_ADDRESS & 0xff //发送有效地址第4字节
/*-----------------------------------------------
nrf905命令控制字
------------------------------------------------*/
#define WC 0x00 // Write configuration register command
#define RC 0x10 // Read configuration register command
#define WTP 0x20 // Write TX Payload command
#define RTP 0x21 // Read TX Payload command
#define WTA 0x22 // Write TX Address command
#define RTA 0x23 // Read TX Address command
#define RRP 0x24 // Read RX Payload command
//PORTB
#define BUZZER 0
#define LED 1
#define SS 2
#define MOSI 3
#define MISO 4
#define SCK 5
//PORTC
#define TX_EN 0
#define TRX_CE 1
#define PWR 2
#define UPLCK 3
//PORTD
#define CD 2
#define DR 3
#define AM 4
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