TI中文支持网在用CC1101做通信测试，主机每10秒钟发送一次数据，从机接收数据后解码点灯。
问题如下：
1、从机在接收数据不出错的时候，接收正常，接收信号灯和解码后的数据正确的LED也能正确点亮，但是若其中一次接收信号解码错误后，后面一直就是解码错误但是数据是有接收的。
2、出错的时间不定，快的10来分钟就出现，慢的能跑2天多
求解为什么出错一次，后面的接收一直都出错？
主控室MSP430G2332
代码如下：
主程序
while(1){mydelay_rf(11);if(rxflag==1){WDTCTL = WDTPW + WDTHOLD;P2OUT |=BIT2;//有信号进来点亮LED1rxflag = 0;TI_CC_GDO0_PxIE &= ~TI_CC_GDO0_PIN;gpovertime = 1500;clearrxbuf();//清接收数组缓存while(gpovertime--){if(RFReceivePacket(rxBuffer,&len)){recode = fun_compare_v20();if(recode ==0x00){P1OUT |=BIT1;//接收信号正确点亮LED2break;}}mydelay(20);}TI_CC_GDO0_PxIE &= ~TI_CC_GDO0_PIN;P1OUT &=~BIT1;P2OUT &=~BIT2;rxflag = 0;}P1OUT |=BIT3;P1OUT |=BIT2;P2OUT &=~(BIT1+BIT0);//--GDO GD2输出为0fun_powerdowncc1101(); //--启动CC1100睡眠YKdelay = 3;fun_watchdogdelay(YKdelay);//--3s唤醒BCSCTL2 |=DIVS_2;fun_cc11xx_TXtoRX();//--启动接收程序}
CC1101配置
TI_CC_SPIWriteReg(TI_CCxxx0_IOCFG0,0x06); // GDO0 output pin config.TI_CC_SPIWriteReg(TI_CCxxx0_PKTLEN,0x3D); // Packet length.TI_CC_SPIWriteReg(TI_CCxxx0_PKTCTRL1, 0x04); // Packet automation control.TI_CC_SPIWriteReg(TI_CCxxx0_PKTCTRL0, 0x05); // Packet automation control.TI_CC_SPIWriteReg(TI_CCxxx0_ADDR,0x00); // Device address.TI_CC_SPIWriteReg(TI_CCxxx0_CHANNR,0x00); // Channel number.TI_CC_SPIWriteReg(TI_CCxxx0_FSCTRL1, 0x0B); // Freq synthesizer control.TI_CC_SPIWriteReg(TI_CCxxx0_FSCTRL0, 0x00); // Freq synthesizer control.TI_CC_SPIWriteReg(TI_CCxxx0_FREQ2,0x5D); // Freq control word, high byteTI_CC_SPIWriteReg(TI_CCxxx0_FREQ1,0x93); // Freq control word, mid byte.TI_CC_SPIWriteReg(TI_CCxxx0_FREQ0,0xB1); // Freq control word, low byte.TI_CC_SPIWriteReg(TI_CCxxx0_MDMCFG4, 0x78); // Modem configuration.TI_CC_SPIWriteReg(TI_CCxxx0_MDMCFG3, 0x93); // Modem configuration.TI_CC_SPIWriteReg(TI_CCxxx0_MDMCFG2, 0x83); // Modem configuration.TI_CC_SPIWriteReg(TI_CCxxx0_MDMCFG1, 0x22); // Modem configuration.TI_CC_SPIWriteReg(TI_CCxxx0_MDMCFG0, 0xF8); // Modem configuration.TI_CC_SPIWriteReg(TI_CCxxx0_DEVIATN, 0x44); // Modem dev (when FSK mod en)TI_CC_SPIWriteReg(TI_CCxxx0_MCSM1 ,0x30); //MainRadio Cntrl State MachineTI_CC_SPIWriteReg(TI_CCxxx0_MCSM0 ,0x18); //MainRadio Cntrl State MachineTI_CC_SPIWriteReg(TI_CCxxx0_FOCCFG,0x16); // Freq Offset Compens. ConfigTI_CC_SPIWriteReg(TI_CCxxx0_BSCFG,0x6C); // Bit synchronization config.TI_CC_SPIWriteReg(TI_CCxxx0_AGCCTRL2, 0x43); // AGC control.TI_CC_SPIWriteReg(TI_CCxxx0_AGCCTRL1, 0x40); // AGC control.TI_CC_SPIWriteReg(TI_CCxxx0_AGCCTRL0, 0x91); // AGC control.TI_CC_SPIWriteReg(TI_CCxxx0_FREND1,0x56); // Front end RX configuration.TI_CC_SPIWriteReg(TI_CCxxx0_FREND0,0x10); // Front end RX configuration.TI_CC_SPIWriteReg(TI_CCxxx0_FSCAL3,0xA9); // Frequency synthesizer cal.TI_CC_SPIWriteReg(TI_CCxxx0_FSCAL2,0x0A); // Frequency synthesizer cal.TI_CC_SPIWriteReg(TI_CCxxx0_FSCAL1,0x00); // Frequency synthesizer cal.TI_CC_SPIWriteReg(TI_CCxxx0_FSCAL0,0x11); // Frequency synthesizer cal.TI_CC_SPIWriteReg(TI_CCxxx0_FSTEST,0x59); // Frequency synthesizer cal.TI_CC_SPIWriteReg(TI_CCxxx0_TEST2,0x88); // Various test settings.TI_CC_SPIWriteReg(TI_CCxxx0_TEST1,0x31); // Various test settings.TI_CC_SPIWriteReg(TI_CCxxx0_TEST0,0x0B); // Various test settings.
数据发送程序
void RFSendPacket(unsigned char *txBuffer,unsigned char size)
{
TI_CC_SPIStrobe(TI_CCxxx0_SFTX); // Change state to TX, initiating
TI_CC_SPIWriteBurstReg(TI_CCxxx0_TXFIFO, txBuffer, size); // Write TX data
TI_CC_SPIStrobe(TI_CCxxx0_STX); // Change state to TX, initiating
// data transfer
while (!(TI_CC_GDO0_PxIN&TI_CC_GDO0_PIN));
// Wait GDO0 to go hi -> sync TX'ed//
while (TI_CC_GDO0_PxIN&TI_CC_GDO0_PIN);
// Wait GDO0 to clear -> end of pkt//
}
数据接收程序
unsigned char RFReceivePacket(unsigned char *rxBuffer, unsigned char *length)
{
unsigned char status[2];
unsigned char pktLen;
TI_CC_SPIStrobe(TI_CCxxx0_SRX);
if ((TI_CC_SPIReadStatus(TI_CCxxx0_RXBYTES) & TI_CCxxx0_NUM_RXBYTES))
{
pktLen = TI_CC_SPIReadReg(TI_CCxxx0_RXFIFO); // Read length byte
if (pktLen <= *length) // If pktLen size <= rxBuffer
{
TI_CC_SPIReadBurstReg(TI_CCxxx0_RXFIFO, rxBuffer, pktLen); // Pull data
*length = pktLen; // Return the actual size
TI_CC_SPIReadBurstReg(TI_CCxxx0_RXFIFO, status, 2);
return (unsigned char)(status[TI_CCxxx0_LQI_RX]&TI_CCxxx0_CRC_OK);
} // Return CRC_OK bit
else
{
*length = pktLen; // Return the large size
TI_CC_SPIStrobe(TI_CCxxx0_SFRX); // Flush RXFIFO
return 0; // Error
}
}
else
return 0; // Error
}
sir Yang1：
接收解码错误后，不能再解码成功，但重新上电后又可以
hellolittle：
回复 sir Yang1:
您好，我最近也遇到了类似的问题，请问您的问题解决了吗？
Barbara Wu：
回复 hellolittle:
清空一下RX FIFO然后再放入接收状态
