stm32-NRF24L01通信

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//////////////////////////////////////////引脚分布，IRQ PA2CE PA4CS PA3SPI1  (记住是SPI1的接口)SCK  PA5MISO PA6MOSI PA7////////////////////////////////////////接好引脚，初始化好就可以使用了。记住，里面的文件配置都不用改，改引脚是ok 的http://download.csdn.net/download/hes_c/10140988

这是RX初始化

NRF24L01_Init();while(NRF24L01_Check()){led_on();printf("NRF NO\r\n");delay_ms(100);}printf("NRF OK\r\n");NRF24L01_RX_Mode();

这是TX初始化

NRF24L01_Init();while(NRF24L01_Check()){led_on();printf("NRF NO\r\n");delay_ms(100);}printf("NRF OK\r\n");NRF24L01_TX_Mode();

因为NRF通信会比较容易掉包

所有下面写了一个通信校验和加密（就不给全部代码了）

这是发送，添加校验和加密

//发送信息int send_mes(u32 ID,u32 t_TX_voltage,u32 t_TX_electricity,u32 t_RX_voltage,u32 t_RX_electricity){int n=0;u32 temp=0;temp=t_TX_voltage+t_TX_electricity+t_RX_voltage+t_RX_electricity+BCD+ID;//IDbuf_mes[n++]=(ID>>24)&0x000000ff;buf_mes[n++]=(ID>>16)&0x000000ff;buf_mes[n++]=(ID>>8)&0x000000ff;buf_mes[n++]=(ID>>0)&0x000000ff;//TX电压buf_mes[n++]=(t_TX_voltage>>24)&0x000000ff;buf_mes[n++]=(t_TX_voltage>>16)&0x000000ff;buf_mes[n++]=(t_TX_voltage>>8)&0x000000ff;buf_mes[n++]=(t_TX_voltage>>0)&0x000000ff;//TX电流buf_mes[n++]=(t_TX_electricity>>24)&0x000000ff;buf_mes[n++]=(t_TX_electricity>>16)&0x000000ff;buf_mes[n++]=(t_TX_electricity>>8)&0x000000ff;buf_mes[n++]=(t_TX_electricity>>0)&0x000000ff;//RX电压buf_mes[n++]=(t_RX_voltage>>24)&0x000000ff;buf_mes[n++]=(t_RX_voltage>>16)&0x000000ff;buf_mes[n++]=(t_RX_voltage>>8)&0x000000ff;buf_mes[n++]=(t_RX_voltage>>0)&0x000000ff;//RX电流buf_mes[n++]=(t_RX_electricity>>24)&0x000000ff;buf_mes[n++]=(t_RX_electricity>>16)&0x000000ff;buf_mes[n++]=(t_RX_electricity>>8)&0x000000ff;buf_mes[n++]=(t_RX_electricity>>0)&0x000000ff;//校验码buf_mes[n++]=(temp>>24)&0x000000ff;buf_mes[n++]=(temp>>16)&0x000000ff;buf_mes[n++]=(temp>>8)&0x000000ff;buf_mes[n++]=(temp>>0)&0x000000ff;buf_mes[32]='\0';if(NRF24L01_TxPacket(buf_mes)==TX_OK){return 1;//printf("NRF24L01 Send Success\r\n");}else{return 0;//printf("NRF24L01 Send Fail\r\n");}}

下面是接收解密和校验

//接收信息int recv_mes(){u32 temp=0,temp1=1;u32 n=0;if(NRF24L01_RxPacket(R_buf_mes)==0)//一旦接收到信息,{//数据合成RX_ID=R_buf_mes[n++]<<24|R_buf_mes[n++]<<16|R_buf_mes[n++]<<8|R_buf_mes[n++];r_TX_voltage=R_buf_mes[n++]<<24|R_buf_mes[n++]<<16|R_buf_mes[n++]<<8|R_buf_mes[n++];r_TX_electricity=R_buf_mes[n++]<<24|R_buf_mes[n++]<<16|R_buf_mes[n++]<<8|R_buf_mes[n++];r_RX_voltage=R_buf_mes[n++]<<24|R_buf_mes[n++]<<16|R_buf_mes[n++]<<8|R_buf_mes[n++];r_RX_electricity=R_buf_mes[n++]<<24|R_buf_mes[n++]<<16|R_buf_mes[n++]<<8|R_buf_mes[n++];temp=R_buf_mes[n++]<<24|R_buf_mes[n++]<<16|R_buf_mes[n++]<<8|R_buf_mes[n++];data_flag=1;}temp1=r_TX_voltage+r_TX_electricity+r_RX_voltage+r_RX_electricity+BCD+RX_ID;if(temp==temp1)//验证成功return 1;return 0;}

关于变量就不上了，其中接收缓存和发送缓存是R_buf_mes[33], buf_mes[33]

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