用89C51驅(qū)動nRf905收發(fā)C源代碼
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#include
#define uchar unsigned char
#define uint unsigned int
#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
/*******************************************************************************************/
typedef struct RFConfig
{
uchar n;
uchar buf[10];
}RFConfig;
code RFConfig RxTxConf =
{
10,
0x01, 0x0c, 0x44, 0x20, 0x20, 0xcc, 0xcc, 0xcc,0xcc, 0x58
};
// The content of this struct is nRF905s initializedata.
// CH_NO=1;433MHZ;Normal Opration,No Retrans;RX,TX Address is 4 Bytes
// RX TX Payload Width is 32 Bytes;Disable Extern Clock;Fosc=16MHZ
// 8 Bits CRC And enable
/*******************************************************************************************/
uchar data TxBuf[32];
uchar data RxBuf[32];
/*******************************************************************************************/
uchar bdataDATA_BUF;
sbit flag =DATA_BUF^7;
sbitflag1 =DATA_BUF^0;
/*******************************************************************************************/
sbit TX_EN =P2^6;
sbit TRX_CE =P2^5;
sbit PWR_UP =P2^4;
sbit MISO =P2^3;
sbit MOSI =P2^2;
sbit SCK =P2^1;
sbit CSN =P2^0;
sbit AM =P3^2;
sbit DR =P3^3;
sbit CD =P3^5;
/*******************************************************************************************/
void InitIO(void); // Initialize IO port
void Inituart(void); // initialize 232 uart
void Config905(void); // Config nRF905 module
void SetTxMode(void); // Set nRF905 in Tx mode
void SetRxMode(void); // Set nRF905 in Rx mode
void TxPacket(void); // Send data by nRF905
void RxPacket(void); // Recive data by nRF905
void SpiWrite(uchar); // Write data to nRF905
uchar SpiRead(void); // Readdatato nRF905
void Delay(uchar n); // Delay 100us
void Scankey(void); // Scan key
void TxData (uchar x); // Send key_value to CRT display
/*******************************************************************************************/
//function main();
/*******************************************************************************************/
void main(void)
{
InitIO(); // Initialize IO port
Inituart(); // initialize 232 uart
Config905(); // Config nRF905 module
SetTxMode(); // Set Tx Mode
TxPacket(); // Transmit Tx bufferdata
Delay(500); // delay for ledlight
P0=0xff; // led close
SetRxMode(); // Set nRF905 in Rx mode
while(1) // circulation
{
Scankey(); // Scan key
if (DR) // If recive data ready...
RxPacket(); // ... recivedata
}
}
/*******************************************************************************************/
//function InitIO();
/*******************************************************************************************/
void InitIO(void)
{
P0=0x0f; // ledlight
CSN=1; // Spi disable
SCK=0; // Spi clocklineinit high
DR=1; // Init DR for input
AM=1; // Init AM for input
PWR_UP=1; // nRF905 power on
TRX_CE=0; // Set nRF905 in standby mode
TX_EN=0; // set radio in Rx mode
}
/*******************************************************************************************/
//function Inituart();
/*******************************************************************************************/
void Inituart(void)
{
TMOD = 0x20; //timer1 working mode 1
TL1 = 0xfd; //f7=9600 for 16mhz Fosc,and ...
TH1 = 0xfd; //...fd=19200 for 11.0592mhz Fosc
SCON = 0xd8; //uart mode 3,ren==1
PCON = 0x80; //smod=0
TR1 = 1; //start timer1
}
/*******************************************************************************************/
//function Config905();
/*******************************************************************************************/
void Config905(void)
{
uchar i;
CSN=0; // Spi enable for write a spi command
SpiWrite(WC); // Write config command
for (i=0;i
SpiWrite(RxTxConf.buf[i]);
}
CSN=1; // Disable Spi
}
/*******************************************************************************************/
//function Delay100us();Delay 100us
/*******************************************************************************************/
void Delay(uchar n)
{
uint i;
while(n--)
for(i=0;i<80;i++);
}
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