您好,
我的CC1200测试模式有问题。 当我为收发器配置连续传输未调制信号(与调制信号相同)时,我会得到这样的信号频谱。
其中,紫色频谱从CC1200有线连接到TI CC调试器,黄色频谱是 通过我们的MCU配置CC1200时的频谱。 在这两种情况下,我都使用相同的PCB,其中一次连接CC调试器,一次放置MCU。 我现在面临的主要问题是关于载波频率的凸起,我不知道它们为什么出现在这里。 如果有人有任何想法,请告诉我。
从RFStudio生成的配置在此处
static const registerSetting_t preferredSettings[]= { {CC1200_IOCFG2, 0x08}, {CC1200_SYNC3, 0x6F}, {CC1200_SYNC2, 0x4E}, {CC1200_SYNC1, 0x90}, {CC1200_SYNC0, 0x4E}, {CC1200_SYNC_CFG1, 0xE8}, {CC1200_SYNC_CFG0, 0x23}, {CC1200_DEVIATION_M, 0x47}, {CC1200_MODCFG_DEV_E, 0x0B}, {CC1200_DCFILT_CFG, 0x56}, {CC1200_PREAMBLE_CFG1, 0x00}, {CC1200_PREAMBLE_CFG0, 0xBA}, {CC1200_IQIC, 0xC8}, {CC1200_CHAN_BW, 0x84}, {CC1200_MDMCFG0, 0x05}, {CC1200_SYMBOL_RATE2, 0x94}, {CC1200_SYMBOL_RATE1, 0x7A}, {CC1200_SYMBOL_RATE0, 0xE1}, {CC1200_AGC_REF, 0x27}, {CC1200_AGC_CS_THR, 0xF1}, {CC1200_AGC_CFG1, 0x11}, {CC1200_AGC_CFG0, 0x90}, {CC1200_FIFO_CFG, 0x00}, {CC1200_FS_CFG, 0x12}, {CC1200_PKT_CFG2, 0x06}, {CC1200_PKT_CFG0, 0x40}, {CC1200_PA_CFG1, 0x36}, {CC1200_PKT_LEN, 0xFF}, {CC1200_IF_MIX_CFG, 0x18}, {CC1200_TOC_CFG, 0x03}, {CC1200_MDMCFG2, 0x03}, {CC1200_FREQ2, 0x56}, {CC1200_FREQ1, 0xCC}, {CC1200_FREQ0, 0xCC}, {CC1200_IF_ADC1, 0xEE}, {CC1200_IF_ADC0, 0x10}, {CC1200_FS_DIG1, 0x04}, {CC1200_FS_DIG0, 0x50}, {CC1200_FS_CAL1, 0x40}, {CC1200_FS_CAL0, 0x0E}, {CC1200_FS_DIVTWO, 0x03}, {CC1200_FS_DSM0, 0x33}, {CC1200_FS_DVC1, 0xF7}, {CC1200_FS_DVC0, 0x0F}, {CC1200_FS_PFD, 0x00}, {CC1200_FS_PRE, 0x6E}, {CC1200_FS_REG_DIV_CML, 0x1C}, {CC1200_FS_SPARE, 0xAC}, {CC1200_FS_VCO0, 0xB5}, {CC1200_IFAMP, 0x05}, {CC1200_XOSC5, 0x0E}, {CC1200_XOSC1, 0x03}, {CC1200_PARTNUMBER, 0x20}, {CC1200_PARTVERSION, 0x11}, {CC1200_MODEM_STATUS1, 0x10}, {CC1200_XOSC_TEST1, 0x00}, };
Lukas