首页 > 无线通信 > 技术讨论 > 新手请问 cc1100 发送正常但接收大于12个字节就接收不到是什么原因（我是用stm32写的程序）跪求大神！

新手请问 cc1100 发送正常但接收大于12个字节就接收不到是什么原因（我是用stm32写的程序）跪求大神！

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#define CCxxx0_IOCFG2    0x00       // GDO2 output pin configuration
#define CCxxx0_IOCFG1    0x01       // GDO1 output pin configuration
#define CCxxx0_IOCFG0    0x02       // GDO0 output pin configuration
#define CCxxx0_FIFOTHR    0x03       // RX FIFO and TX FIFO thresholds
#define CCxxx0_SYNC1       0x04       // Sync word, high INT8U
#define CCxxx0_SYNC0       0x05       // Sync word, low INT8U
#define CCxxx0_PKTLEN    0x06       // Packet length
#define CCxxx0_PKTCTRL1    0x07       // Packet automation control
#define CCxxx0_PKTCTRL0    0x08       // Packet automation control
#define CCxxx0_ADDR       0x09       // Device address
#define CCxxx0_CHANNR    0x0A       // Channel number
#define CCxxx0_FSCTRL1    0x0B       // Frequency synthesizer control
#define CCxxx0_FSCTRL0    0x0C       // Frequency synthesizer control
#define CCxxx0_FREQ2       0x0D       // Frequency control word, high INT8U
#define CCxxx0_FREQ1       0x0E       // Frequency control word, middle INT8U
#define CCxxx0_FREQ0       0x0F       // Frequency control word, low INT8U
#define CCxxx0_MDMCFG4    0x10       // Modem configuration
#define CCxxx0_MDMCFG3    0x11       // Modem configuration
#define CCxxx0_MDMCFG2    0x12       // Modem configuration
#define CCxxx0_MDMCFG1    0x13       // Modem configuration
#define CCxxx0_MDMCFG0    0x14       // Modem configuration
#define CCxxx0_DEVIATN    0x15       // Modem deviation setting
#define CCxxx0_MCSM2       0x16       // Main Radio Control State Machine configuration
#define CCxxx0_MCSM1       0x17       // Main Radio Control State Machine configuration
#define CCxxx0_MCSM0       0x18       // Main Radio Control State Machine configuration
#define CCxxx0_FOCCFG    0x19       // Frequency Offset Compensation configuration
#define CCxxx0_BSCFG       0x1A       // Bit Synchronization configuration
#define CCxxx0_AGCCTRL2    0x1B       // AGC control
#define CCxxx0_AGCCTRL1    0x1C       // AGC control
#define CCxxx0_AGCCTRL0    0x1D       // AGC control
#define CCxxx0_WOREVT1    0x1E       // High INT8U Event 0 timeout
#define CCxxx0_WOREVT0    0x1F       // Low INT8U Event 0 timeout
#define CCxxx0_WORCTRL    0x20       // Wake On Radio control
#define CCxxx0_FREND1    0x21       // Front end RX configuration
#define CCxxx0_FREND0    0x22       // Front end TX configuration
#define CCxxx0_FSCAL3    0x23       // Frequency synthesizer calibration
#define CCxxx0_FSCAL2    0x24       // Frequency synthesizer calibration
#define CCxxx0_FSCAL1    0x25       // Frequency synthesizer calibration
#define CCxxx0_FSCAL0    0x26       // Frequency synthesizer calibration
#define CCxxx0_RCCTRL1    0x27       // RC oscillator configuration
#define CCxxx0_RCCTRL0    0x28       // RC oscillator configuration
#define CCxxx0_FSTEST    0x29       // Frequency synthesizer calibration control
#define CCxxx0_PTEST       0x2A       // Production test
#define CCxxx0_AGCTEST    0x2B       // AGC test
#define CCxxx0_TEST2       0x2C       // Various test settings
#define CCxxx0_TEST1       0x2D       // Various test settings
#define CCxxx0_TEST0       0x2E       // Various test settings
// Strobe commands
#define CCxxx0_SRES       0x30       // Reset chip.
#define CCxxx0_SFSTXON    0x31       // Enable and calibrate frequency synthesizer (if MCSM0.FS_AUTOCAL=1).
                                    // If in RX/TX: Go to a wait state where only the synthesizer is
                                    // running (for quick RX / TX turnaround).
#define CCxxx0_SXOFF       0x32       // Turn off crystal oscillator.
#define CCxxx0_SCAL       0x33       // Calibrate frequency synthesizer and turn it off
                                    // (enables quick start).
#define CCxxx0_SRX       0x34       // Enable RX. Perform calibration first if coming from IDLE and
                                    // MCSM0.FS_AUTOCAL=1.
#define CCxxx0_STX       0x35       // In IDLE state: Enable TX. Perform calibration first if
                                    // MCSM0.FS_AUTOCAL=1. If in RX state and CCA is enabled:
                                    // Only go to TX if channel is clear.
#define CCxxx0_SIDLE       0x36       // Exit RX / TX, turn off frequency synthesizer and exit
                                    // Wake-On-Radio mode if applicable.
#define CCxxx0_SAFC       0x37       // Perform AFC adjustment of the frequency synthesizer
#define CCxxx0_SWOR       0x38       // Start automatic RX polling sequence (Wake-on-Radio)
#define CCxxx0_SPWD       0x39       // Enter power down mode when CSn goes high.
#define CCxxx0_SFRX       0x3A       // Flush the RX FIFO buffer.
#define CCxxx0_SFTX       0x3B       // Flush the TX FIFO buffer.
#define CCxxx0_SWORRST    0x3C       // Reset real time clock.
#define CCxxx0_SNOP       0x3D       // No operation. May be used to pad strobe commands to two
                                    // INT8Us for simpler software.
#define CCxxx0_PARTNUM    0x30
#define CCxxx0_VERSION    0x31
#define CCxxx0_FREQEST    0x32
#define CCxxx0_LQI       0x33
#define CCxxx0_RSSI       0x34
#define CCxxx0_MARCSTATE 0x35
#define CCxxx0_WORTIME1    0x36
#define CCxxx0_WORTIME0    0x37
#define CCxxx0_PKTSTATUS 0x38
#define CCxxx0_VCO_VC_DAC 0x39
#define CCxxx0_TXBYTES    0x3A
#define CCxxx0_RXBYTES    0x3B
#define CCxxx0_PATABLE    0x3E
#define CCxxx0_TXFIFO    0x3F
#define CCxxx0_RXFIFO    0x3F

上面是寄存器配置

接收程序的代码进中断
u8 halRfReceivePacket(void)
{
u8 status[2]={0};
u8 packetLength=0;
if ((halSpiReadStatus(CCxxx0_RXBYTES) & BYTES_IN_RXFIFO)) //如果接的字节数不为0
{
      packetLength = halSpiReadReg(CCxxx0_RXFIFO);//读出第一个字节，此字节为该帧数据长度
      if (packetLength <= length) //如果所要的有效数据长度小于等于接收到的数据包的长度
{
         halSpiReadBurstReg(CCxxx0_RXFIFO, RxBuf, packetLength); //读出所有接收到的数据
         length = packetLength; //把接收数据长度的修改为当前数据的长度

         // Read the 2 appended status bytes (status[0] = RSSI, status[1] = LQI)
         halSpiReadBurstReg(CCxxx0_RXFIFO, status, 2); //读出CRC校验位
halSpiStrobe(CCxxx0_SFRX); //清洗接收缓冲区
Rx_flag =TRUE;
return ((status[1] & CRC_OK)); //如果校验成功返回接收成功
      }
   else
   {
         length = packetLength;
         halSpiStrobe(CCxxx0_SFRX); //清洗接收缓冲区
         return 0;
      }
}
else
return 0;
}