[参考译文] CC1101：接收数据有时良好、有时糟糕

https://e2e.ti.com/support/wireless-connectivity/sub-1-ghz-group/sub-1-ghz/f/sub-1-ghz-forum/1059110/cc1101-receive-data-sometimes-good-sometimes-bad

如何发生以下情况以及如何提高数据发送和接收的成功率 ？

1. 
2. 

3. #ifdef DATARATE_250kbps
   static const uint8_t CC1101InitData[ INIT_NUM ][ 2 ]=
   {
   //0x29：CHP_RDYn 0x2E:3-高阻 0x0F:CRC_OK
   { CC1101_IOCFG2, 0x0F}, // IOCFG2 GDO2 Default is CHP_RDYn.0x29
   { CC1101_IOCFG1, 0x2E }, // IOCFG1 GDO1 Default is 3-state
   { CC1101_IOCFG0, 0x06 }, // IOCFG0 GDO0 output pin configuration.0x06
   { CC1101_FIFOTHR, 0x0E }, // FIFOTHR RXFIFO and TXFIFO thresholds.
   { CC1101_SYNC1, 0XD3 },
   { CC1101_SYNC0, 0X91 },
   { CC1101_PKTLEN, 0xFF }, // PKTLEN Packet length.
   { CC1101_PKTCTRL1, 0x04 }, // PKTCTRL1数据包自动控制.状态字节开启/地址检查
   { CC1101_PKTCTRL0, 0x45 }, // PKTCTRL0数据包自动控制. CRC开启/可变长度
   //ADDR
   //CHANNR
   { CC1101_FSCTRL1, 0x0C }, // FSCTRL1 频率合成器控制 sensitivity:0x0c current consumption:0x12
   { CC1101_FSCTRL0, 0x00 }, // FSCTRL0 频率合成器控制
   { CC1101_FREQ2, 0x10 }, // FREQ2 Frequency control word, high byte
   { CC1101_FREQ1, 0x44 }, // FREQ1 Frequency control word, middle byte.
   { CC1101_FREQ0, 0xEC }, // FREQ0 Frequency control word, low byte.
   
   { CC1101_MDMCFG4, 0x2D }, // MDMCFG4 Modem configuration.
   { CC1101_MDMCFG3, 0x3B }, // MDMCFG3 Modem 速率
   { CC1101_MDMCFG2, 0x13 }, // MDMCFG2 Modem DC 阻断滤波器. sensitivity:0x13 current consumption:0x93
   { CC1101_MDMCFG1, 0x22 }, // MDMCFG1 Modem 调制格式/MC/ 4bytes前导
   { CC1101_MDMCFG0, 0xF8 }, // MDMCFG0 Modem 信道频率间隔
   
   { CC1101_DEVIATN, 0x62 }, // DEVIATN Modem deviation setting (when FSK modulation is enabled).
   //MCSM2 0X07
   //MCSM1 0X30
   { CC1101_MCSM0, 0x18 }, // MCSM0 Main Radio Control State Machine configuration.
   { CC1101_FOCCFG, 0x1D }, // FOCCFG 频率偏移补偿配置
   { CC1101_BSCFG, 0x1C }, // BSCFG 位同步配置
   { CC1101_AGCCTRL2, 0xC7 }, // AGCCTRL2 AGC control.
   { CC1101_AGCCTRL1, 0x00 }, // AGCCTRL1 AGC control.
   { CC1101_AGCCTRL0, 0xB0 }, // AGCCTRL0 AGC control.
   //WOREVT1 0X87
   //WOREVT0 0X6B
   //WORCTRL 0XFB
   { CC1101_FREND1, 0xB6 }, // FREND1 Front end RX configuration.
   { CC1101_FREND0, 0x10 }, // FREND0 Front end TX configuration.
   { CC1101_FSCAL3, 0xEA }, // FSCAL3 Frequency synthesizer calibration.
   { CC1101_FSCAL2, 0x2A }, // FSCAL2 Frequency synthesizer calibration.
   { CC1101_FSCAL1, 0x00 }, // FSCAL1 Frequency synthesizer calibration.
   { CC1101_FSCAL0, 0x1F }, // FSCAL0 Frequency synthesizer calibration.
   //RCCCTRL1 0X41
   //RCCCTRL0 0X00
   //FSTEST 0X59
   //PTEST 0X7F
   //AGCTEST 0X3F
   { CC1101_TEST2, 0x88 },
   { CC1101_TEST1, 0x31 },
   { CC1101_TEST0, 0x0B }, // TEST0 // TEST0 Various test settings.//TEST0 0X0B
   };
   #endi

4. void CC1101_RX_MODE(uint8_t type)
   {
     RESET_GDO0;
     RESET_GDO2;
     reset_rxData();
     reset_txData();
   
     CC1101_Write_Cmd(CC1101_SIDLE );
   
     //delay_ms(1);
     CC1101_Write_Cmd( CC1101_SFRX );
     CC1101_Write_Cmd( CC1101_SFTX );
   	CC1101_Write_Reg(CC1101_PKTLEN,0xff);//
     CC1101_Write_Reg(CC1101_IOCFG2,0x07);  //CRC_OK
     CC1101_Write_Reg(CC1101_PKTCTRL0,0x45);//可变长度
     //ADR_CHK:Address check, no broadcast
     CC1101_Write_Reg(CC1101_PKTCTRL1,0x0D);
       
   	CC1101_Write_Reg(CC1101_MCSM0,0x18);// When going from IDLE to RX or TX (or FSTXON)
     CC1101_Write_Reg(CC1101_IOCFG0,0x06); //收到同步字置位,数据包末尾\地址校验失败\RXFIFO溢出时取消置位
     //WOR， RX_TIME是百分比，退出WOR，RX_TIME就必须一直持续到packet结束
     CC1101_Write_Reg(CC1101_MCSM2,0x07);//RX_TIME:Until end of packet
   }
   
   
   

5. void CC1101_WOR_Init( void )
   {
     //CC1101_Write_Cmd(CC1101_SIDLE );
     //提前配置I/O,输出状态不正常
     //与 RX FIFO 相关：达到或超出 RX FIFO 阈值填充 RX FIFO 时置位，或到达数据包结尾时置位
     
     //CC1101_Write_Reg(CC1101_WOREVT1,0x87);//Event0高8位  1000ms
     //CC1101_Write_Reg(CC1101_WOREVT0,0x6A);//Event0低8位
     
     CC1101_Write_Reg(CC1101_MCSM0,0x38);// 每第四次当从 RX 或 TX 返回空闲时自动进行校准
     CC1101_Write_Reg(CC1101_MCSM2,0x10);//RX_RSSI=1(便于快速休眠)  1000ms*0.391%
     
     uint16_t sl_p;
     if(WOR_short){
       sl_p =50;
     }else {
       sl_p =1000;
     }
     sl_p = (uint16_t)(sl_p*(34.666));//26000/750
     CC1101_Write_Reg(CC1101_WOREVT1,sl_p>>8);//Event0高8位  1000ms
     CC1101_Write_Reg(CC1101_WOREVT0,sl_p);//Event0低8位
     
     //WORCTRL.EVENT1  t1=EVENT1*750/26M 16 (0.444 – 0.462 ms)
     //CC1101_Write_Reg(CC1101_WORCTRL,0x48);// 事件 1 工作暂停前事件 0 后  WOR_RES==0 1LSB周期 (27μs – 31μs)
     CC1101_Write_Reg(CC1101_WORCTRL,0x08);// 事件 1 工作暂停前事件 0 后  WOR_RES==0 1LSB周期 (27μs – 31μs)
     //Event0 计算公式：34666约为1s  t0=WOREVT*(2^(5*WOR_RES))*750/26M  8.8uA平均功耗
     delay_us(3000);
     //CC1101_Write_Reg(CC1101_WORCTRL,0x30);
     uint8_t calib1 = CC1101_Read_Status(RCCTRL1_STATUS);
     uint8_t calib0 = CC1101_Read_Status(RCCTRL0_STATUS);
     CC1101_Write_Reg(CC1101_RCCTRL1, calib1);
     CC1101_Write_Reg(CC1101_RCCTRL0, calib0);
     
     CC1101_Write_Reg(CC1101_IOCFG0,0x25);  //0x25  WOR ENVT1
     //CC1101_Write_Cmd(CC1101_SIDLE );
     CC1101_Write_Cmd(CC1101_SWORRST );    //Resets the real time clock
     CC1101_Write_Cmd(CC1101_SWOR);         // Starts Wake-on-Radi
     //CC1101_Write_Cmd(CC1101_SPWD);
   }

6. MCU：STM32L496  SPI：4MHz TSP：1us  
7.  例如：#define CC1101_SET_CSn_LOW CC_CS_0；DELAY_us (2)；
   #define CC1101_SET_CSn_HIGH DELAY_us (2)；CC_CS_1；