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我用的是LPC2103，把程序下载到两块ARM7板子中，在IAR中调试时，当执行到 if(nRF24L01_RxPacket(RxBuf)) 语句时，就直接跳出循环了。我想实现的功能是：任何一方，按下按键1/2，自身LED1/2亮，对方LED1/2也亮。两块板子下的是同一个程序。
恳请高手指教，不甚感激。
程序如下：
#include "config.h"
#define TX_ADR_WIDTH 5 // 5 bytes TX address width
#define RX_ADR_WIDTH 5 // 5 bytes RX address width
#define TX_PLOAD_WIDTH 32 // 32 bytes TX payload
#define RX_PLOAD_WIDTH 32 // 32 bytes TX payload
uint8 TX_ADDRESS[TX_ADR_WIDTH] = {0x34,0x43,0x10,0x10,0x01}; // Define a static TX address (即目标地址)
uint8 RX_ADDRESS[RX_ADR_WIDTH] = {0x34,0x43,0x10,0x10,0x02}; // Define a static RX address (即本地地址)
uint8 TxBuf[32]=
{
0x01,0x02,0x03,0x4,0x05,0x06,0x07,0x08,
0x09,0x10,0x11,0x12,0x13,0x14,0x15,0x16,
0x17,0x18,0x19,0x20,0x21,0x22,0x23,0x24,
0x25,0x26,0x27,0x28,0x29,0x30,0x31,0x32,
};
uint8 count,tf;
void delay(uint32 x)
{
uint32 i;
for(i=0;i<x;i++);
for(i=0;i<x;i++);
}
#define CE 1<<2
#define CSN 1<<3
#define SCK 1<<4
#define MOSI 1<<6
#define MISO 1<<5
#define IRQ 1<<7
/**************************************************/
#define LED1 1<<17
#define LED2 1<<18
#define KEY1 1<<15
#define KEY2 1<<16
/**************************************************/
uint8 sta;
#define RX_DR ((sta & 0x40) >> 6)
#define TX_DS ((sta & 0x20) >> 5)
#define MAX_RT ((sta & 0x10) >> 4)
/**************************************************/
//***************************************************************************//
// SPI(nRF24L01) commands
#define READ_REG 0x00 // Define read command to register
#define WRITE_REG 0x20 // Define write command to register
#define RD_RX_PLOAD 0x61 // Define RX payload register address
#define WR_TX_PLOAD 0xA0 // Define TX payload register address
#define FLUSH_TX 0xE1 // Define flush TX register command
#define FLUSH_RX 0xE2 // Define flush RX register command
#define REUSE_TX_PL 0xE3 // Define reuse TX payload register command
#define NOP 0xFF // Define No Operation, might be used to read status register
// SPI(nRF24L01) registers(addresses)
#define CONFIG 0x00 // 'Config' register address
#define EN_AA 0x01 // 'Enable Auto Acknowledgment' register address
#define EN_RXADDR 0x02 // 'Enabled RX addresses' register address
#define SETUP_AW 0x03 // 'Setup address width' register address
#define SETUP_RETR 0x04 // 'Setup Auto. Retrans' register address
#define RF_CH 0x05 // 'RF channel' register address
#define RF_SETUP 0x06 // 'RF setup' register address
#define STATUS 0x07 // 'Status' register address
#define OBSERVE_TX 0x08 // 'Observe TX' register address
#define CD 0x09 // 'Carrier Detect' register address
#define RX_ADDR_P0 0x0A // 'RX address pipe0' register address
#define RX_ADDR_P1 0x0B // 'RX address pipe1' register address
#define RX_ADDR_P2 0x0C // 'RX address pipe2' register address
#define RX_ADDR_P3 0x0D // 'RX address pipe3' register address
#define RX_ADDR_P4 0x0E // 'RX address pipe4' register address
#define RX_ADDR_P5 0x0F // 'RX address pipe5' register address
#define TX_ADDR 0x10 // 'TX address' register address
#define RX_PW_P0 0x11 // 'RX payload width, pipe0' register address
#define RX_PW_P1 0x12 // 'RX payload width, pipe1' register address
#define RX_PW_P2 0x13 // 'RX payload width, pipe2' register address
#define RX_PW_P3 0x14 // 'RX payload width, pipe3' register address
#define RX_PW_P4 0x15 // 'RX payload width, pipe4' register address
#define RX_PW_P5 0x16 // 'RX payload width, pipe5' register address
#define FIFO_STATUS 0x17 // 'FIFO Status Register' register address
//****************************************************************************//
uint8 SPI_RW(uint8 data)
{
char i,temp=0;
for(i=0;i<8;i++) // output 8-bit
{
if(data & 0x80)
{
IOSET = MOSI ; // output 'uchar', MSB to MOSI
}
else
{
IOCLR = MOSI;
}
data = (data << 1); // shift next bit into MSB..
temp<<=1;
IOSET = SCK ; // Set SCK high..
if(IOPIN&MISO)
temp++; // capture current MISO bit
IOCLR = SCK; // ..then set SCK low again
}
return(temp); // return read uchar
}
/**************************************************/
/**************************************************/
uint8 SPI_RW_Reg(uint8 reg, uint8 value)
{
uint8 status;
IOCLR = CSN; // CSN low, init SPI transaction
status = SPI_RW(reg); // select register
SPI_RW(value); // ..and write value to it.
IOSET = CSN; // CSN high again
return(status); // return nRF24L01 status byte
}
/**************************************************/
/**************************************************/
uint8 SPI_Read(uint8 reg)
{
uint8 reg_val;
IOCLR = CSN; // CSN low, initialize SPI communication...
SPI_RW(reg); // Select register to read from..
reg_val = SPI_RW(0); // ..then read registervalue
IOSET = CSN; // CSN high, terminate SPI communication
return(reg_val); // return register value
}
/**************************************************/
/**************************************************/
uint8 SPI_Read_Buf(uint8 reg, uint8 *pBuf, uint8 bytes)
{
uint8 status,byte_ctr;
IOCLR = CSN; // Set CSN low, init SPI tranaction
status = SPI_RW(reg); // Select register to write to and read status byte
for(byte_ctr=0;byte_ctr<bytes;byte_ctr++)
pBuf[byte_ctr] = SPI_RW(0); // Perform SPI_RW to read byte from nRF24L01
IOSET = CSN; // Set CSN high again
return(status); // return nRF24L01 status byte
}
/**************************************************/
/**************************************************/
uint8 SPI_Write_Buf(uint8 reg, uint8 *pBuf, uint8 bytes)
{
uint8 status,byte_ctr;
IOCLR = CSN; // Set CSN low, init SPI tranaction
status = SPI_RW(reg); // Select register to write to and read status byte
for(byte_ctr=0; byte_ctr<bytes; byte_ctr++) // then write all byte in buffer(*pBuf)
SPI_RW(*pBuf++);
IOSET = CSN; // Set CSN high again
return(status); // return nRF24L01 status byte
}
/**************************************************/
/***************************************************/
void SetRX_Mode(void)
{
IOCLR = CE;
SPI_RW_Reg(WRITE_REG + CONFIG, 0x0f); // IRQ收发完成中断响应，16位CRC ，主接收
IOSET = CE;
delay(1000);//注意不能太小
}
/***************************************************/
/************************************************/
uint8 nRF24L01_RxPacket(uint8 * rx_buf)
{
uint8 revale=0;
sta=SPI_Read(STATUS); // 读取状态寄存其来判断数据接收状况
if(sta&0x40) // 判断是否接收到数据
{
IOCLR = CE; //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,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;
}
/*************************************************/
/**************************************************/
void nRF24L01_TxPacket(uint8 * tx_buf)
{
IOCLR = CE; //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
IOSET = CE; //置高CE，激发数据发送
delay(600);
}
/**************************************************/
/***************************************************************/
void init_NRF24L01(void)
{
IOCLR = CE; // chip enable
IOSET = CSN; // Spi disable
IOCLR = SCK; // 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, 0x0f); // IRQ收发完成中断响应，16位CRC ，主接收}
delay(6000);
}
/*******************************************************************/
void main(void)
{
uint8 RxBuf[32];
PINSEL0=0x00000000;
PINSEL1=0x00000000;
IODIR=0x000600DC;
IOSET=LED1|LED2;
init_NRF24L01() ;
while(1)
{
if((IOPIN & 0x00008000) == 0)
{
while(!(IOPIN & 0x00008000));
TxBuf[0]=0x29;
tf=1;
IOCLR=LED1;
}
//------------------------------------------------------------------------------
if((IOPIN & 0x00010000) == 0)
{
while(!(IOPIN & 0x00010000));
TxBuf[0]=0x30;
tf=1;
IOCLR=LED2;
}
//------------------------------------------------------------------------------
if(tf)
{
nRF24L01_TxPacket(TxBuf); // Transmit Tx buffer data
delay(1000);
SPI_RW_Reg(WRITE_REG+STATUS,0XFF);
TxBuf[0]=0;
tf=0;
}
//------------------------------------------------
SetRX_Mode();
if(nRF24L01_RxPacket(RxBuf)) //判断是否收到数据
{
if(RxBuf[0]==0x29)
{
tf=1;
IOCLR=LED1;
}
if(RxBuf[0]==0x30)
{
tf=2;
IOCLR=LED2;
}
}
tf=0;
RxBuf[0]=0;
}
} |
阿莫论坛20周年了！感谢大家的支持与爱护！！
曾经有一段真挚的爱情摆在我的面前，我没有珍惜，现在想起来，还好我没有珍惜……
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发表于 2010-4-22 09:08:06
楼主