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请问我用mmwave_mcuplus_sdk_04_04_01_02的双芯片级联采数工程(mmwave_mcuplus_sdk_04_04_01_02\mmwave_mcuplus_sdk_04_04_01_02\ti\utils\test\cascade\am273x);
工程默认的采数模式应该是DDMA吧,现在我想把工程修改为TDM模式采数;
在代码里把配置改为
profileCfg 0 77 7 7 20.83 0 0 11 256 20000 0 0 42
chirpCfg 0 0 0 0 0 0 0 1
chirpCfg 1 1 0 0 0 0 0 4
chirpCfg 2 2 0 0 0 0 0 2
frameCfg 0 2 16 400 256 100 1 0;
但采出来的数据大小与我们预想的差了一倍;
预想数据大小为采样点数(256)*点数大小(4)*发射天线*接收天线(48,考虑MIIO,级联变为6发8收)*chirp数(16)*采样帧数(400 );
实际采数大小=预想数据大小/2;
猜测是不是级联采数所修改的TDM模式,是两芯片单独工作,没有MIMO成48个虚拟通道,而是2*TX*RX=24个通道
请参考C:\ti\mmwave_mcuplus_sdk_04_04_00_01\mmwave_mcuplus_sdk_04_04_00_01\ti\demo\awr294x\mmw里面有TDM模式的设置。
请看下面e2e工程师的回复。
Can you let me know how you are providing Tx select for different channels of the each of the AWR2243? From what I can see, it looks like there are only 3 Tx here from 1 device.