ADC采样点数与原始数据不匹配

你好，我在使用capture_demo获得原始的ADC数据后，共128个chirp，每个chirp采样256点，使用complex_2x采样，借助你们提供的Matlab解析代码绘制了原始的ADC数据图（前128*256=32768点）,第一幅图为局部放大。但我发现原始的ADC数据图中的周期与我设置的采样点数不一致，如图所示。我设置的一个chirp的采样点数为２５６，但图中的周期为１０２４，能不能请TI的工程师解答一下，谢谢！

Wesley He：

你好，
有没有将4个RX通道数据分离开？
谢谢

user1642.：

回复 Wesley He:

你好。我是将mss.c文件中第412行的ptrOpenCfg->chCfg.rxChannelEn 值改为了15U，原来是2U。我的理解是15U=1111b表示使能4根接收天线，2U=0010b,只使能了接收天线3，我的理解对吗？
1642采用非交叉的方式储存数据，即前128*256=32768点表示天线1的数据，还需要怎样分离通道数据呢？
谢谢！

user1642.：

回复 Wesley He:

你好，还想问一下。在配置capture demo的发射信号后，总是出现以下的错误信息，是怎么回事？
[Cortex_R4_0] Debug: Launched the Demo Initialization Task
Debug: mmWave Control Sync was successful
Debug: Test Framework Initialized
[C674X_0] Debug: Launched the Demo Initialization Task
Debug: Test Framework Initialized
[Cortex_R4_0] Debug: Framework Sync was successful
[C674X_0] Debug: Framework Sync was successful
[Cortex_R4_0] Debug: mmWave has been opened
Debug: Profile has been loaded successfully
Debug: Profile has been opened successfully
Error: Unable to configure the mmWave module [Error: -203685690 mmWave: -3108 SubSys: 49]
[C674X_0] Debug: Profile has been opened successfully
[Cortex_R4_0] xdc.runtime.Main: "D:/1-software/TI/MMWAVE-SDK/mmwave_sdk_02_01_00_04/packages/ti/drivers/test/mem_capture/xwr16xx/mss.c", line 1012: assertion failure
xdc.runtime.Error.raise: terminating execution

user5872702：

回复 user1642.:

请问这个问题你解决了吗？

user1642.：

回复 user5872702:

哪一个问题

user5872702：

回复 user1642.:

你好，还想问一下。在配置capture demo的发射信号后，总是出现以下的错误信息，是怎么回事？
[Cortex_R4_0] Debug: Launched the Demo Initialization Task
Debug: mmWave Control Sync was successful
Debug: Test Framework Initialized
[C674X_0] Debug: Launched the Demo Initialization Task
Debug: Test Framework Initialized
[Cortex_R4_0] Debug: Framework Sync was successful
[C674X_0] Debug: Framework Sync was successful
[Cortex_R4_0] Debug: mmWave has been opened
Debug: Profile has been loaded successfully
Debug: Profile has been opened successfully
Error: Unable to configure the mmWave module [Error: -203685690 mmWave: -3108 SubSys: 49]
[C674X_0] Debug: Profile has been opened successfully
[Cortex_R4_0] xdc.runtime.Main: "D:/1-software/TI/MMWAVE-SDK/mmwave_sdk_02_01_00_04/packages/ti/drivers/test/mem_capture/xwr16xx/mss.c", line 1012: assertion failure
xdc.runtime.Error.raise: terminating execution

这个问题

user1642.：

回复 user5872702:

看一下设置的frame占空比是不是满足小于50%的要求。