你好，
我想直接使用mmwave studio实现adv chirp配置，但是配置不成功。具体问题如下：
首先，我直接运行官方demo“Cascade_Configuration_MIMO.lua”，能够得到普通的线性调频信号，然后，我想在此基础上给每一个chirp加一个初始频率增量，达到步进频率的效果。
因此，我是在官方demo“Cascade_Configuration_MIMO.lua”基础上再添加了几行调用“AdvChirpConfig”函数的代码（该代码也是直接从官方demo“Advanced_Chirp_Example.lua”中复制过来的），如下所示。
--=====================================================================
function AdvChirpConfig()
local apiReturn
local test_result = 0
-- Enable Advance Chirp
apiReturn = ar1.SetMiscConfig(1, 1, 0, 0)
if (0 ~= apiReturn) then
WriteToLog("FAIL : Radar Misc cfg Failed\n", "red")
test_result = 1
end
apiReturn = ar1.ClearAdvChirpLUTConfig()
if (0 ~= apiReturn) then
WriteToLog("FAIL : ClearAdvChirpLUTConfig cfg Failed\n","red")
test_result = 1
end
apiReturn = ar1.SetProfileAdvChirpConfigLUT(0, 4, 0, 0, 0, 0)
if (0 ~= apiReturn) then
WriteToLog("FAIL : Adv Chirp Profile LUT cfg Failed\n","red")
test_result = 1
end
apiReturn = ar1.SetStartFreqAdvChirpConfigLUT(16, 4, 0, 0, 0, 0.01, 0.02, 0.03)
if (0 ~= apiReturn) then
WriteToLog("FAIL : Adv Chirp Start Freq LUT cfg Failed\n","red")
test_result = 1
end
apiReturn = ar1.SetTxEnAdvChirpConfigLUT(32, 4, 3, 7, 3, 7)
if (0 ~= apiReturn) then
WriteToLog("FAIL : Adv Chirp TX LUT cfg Failed\n","red")
test_result = 1
end
apiReturn = ar1.SetTx0PhShiftAdvChirpConfigLUT(48, 4, 5.625, 11.25, 16.875, 22.5)
if (0 ~= apiReturn) then
WriteToLog("FAIL : ADV Chirp Tx0 PhShifter LUT cfg Failed\n","red")
test_result = 1
end
apiReturn = ar1.AdvChirpLUTConfig(0, 64)
if (0 ~= apiReturn) then
WriteToLog("FAIL : Adv Chirp LUT transfer Failed\n","red")
test_result = 1
end
local paramIndex
-- Profile
paramIndex = 0
apiReturn = ar1.AdvChirpConfig(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0)
if (apiReturn ~= 0) then
local reportString = string.format("FAIL : Advanced Chirp Config %d Failed with %d\n",paramIndex, apiReturn)
WriteToLog(reportString,"red")
test_result = 1
end
-- Start Frequency
paramIndex = 1
apiReturn = ar1.AdvChirpConfig(1, 0, 8, 1, 18641, 18641, 18641, 18641, 0, 0,0, 1, 0, 0, 0, 0, 0)
if (apiReturn ~= 0) then
local reportString = string.format("FAIL : Advanced Chirp Config %d Failed with %d\n",paramIndex, apiReturn)
WriteToLog(reportString,"red")
test_result = 1
end
-- Slope
paramIndex = 2
apiReturn = ar1.AdvChirpConfig(2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0)
if (apiReturn ~= 0) then
local reportString = string.format("FAIL : Advanced Chirp Config %d Failed with %d\n",paramIndex, apiReturn)
WriteToLog(reportString,"red")
test_result = 1
end
-- Idle Time
paramIndex = 3
apiReturn = ar1.AdvChirpConfig(3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0)
if (apiReturn ~= 0) then
local reportString = string.format("FAIL : Advanced Chirp Config %d Failed with %d\n",paramIndex, apiReturn)
WriteToLog(reportString,"red")
test_result = 1
end
-- ADC Start
paramIndex = 4
apiReturn = ar1.AdvChirpConfig(4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,0, 0, 0, 0, 0)
if (apiReturn ~= 0) then
local reportString = string.format("FAIL : Advanced Chirp Config %d Failed with %d\n",paramIndex, apiReturn)
WriteToLog(reportString,"red")
test_result = 1
end
-- TX Enable
paramIndex = 5
apiReturn = ar1.AdvChirpConfig(5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0)
if (apiReturn ~= 0) then
local reportString = string.format("FAIL : Advanced Chirp Config %d Failed with %d\n",paramIndex, apiReturn)
WriteToLog(reportString,"red")
test_result = 1
end
-- BPM
paramIndex = 6
apiReturn = ar1.AdvChirpConfig(6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,0, 0, 0, 0, 0)
if (apiReturn ~= 0) then
local reportString = string.format("FAIL : Advanced Chirp Config %d Failed with %d\n",paramIndex, apiReturn)
WriteToLog(reportString,"red")
test_result = 1
end
-- Phase Shifter 1
paramIndex = 7
apiReturn = ar1.AdvChirpConfig(7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,0, 0, 0, 0, 0)
if (apiReturn ~= 0) then
local reportString = string.format("FAIL : Advanced Chirp Config %d Failed with %d\n",paramIndex, apiReturn)
WriteToLog(reportString,"red")
test_result = 1
end
-- Phase Shifter 2
paramIndex = 8
apiReturn = ar1.AdvChirpConfig(8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,0, 0, 0, 0, 0)
if (apiReturn ~= 0) then
local reportString = string.format("FAIL : Advanced Chirp Config %d Failed with %d\n",paramIndex, apiReturn)
WriteToLog(reportString,"red")
test_result = 1
end
-- Phase Shifter 3
paramIndex = 9
apiReturn = ar1.AdvChirpConfig(9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0)
if (apiReturn ~= 0) then
local reportString = string.format("FAIL : Advanced Chirp Config %d Failed with %d\n",paramIndex, apiReturn)
WriteToLog(reportString,"red")
test_result = 1
end
return test_result
end
-- Advanced Chirp Config
for i=1,table.getn(RadarDevice) do
if (0 ~= AdvChirpConfig(i)) then
WriteToLog("FAIL : Adv Chirp cfg Failed\n","red")
test_result = 1
end
end
这段代码是添加在官方demo“Cascade_Configuration_MIMO.lua”的末尾，即12个tx依次以“ar1.ChirpConfig_mult”函数配置完chirp后，再使用“ar1.AdvChirpConfig”函数依次对4个device进行adv chirp配置。运行脚本的过程中无任何报错。
接下来，我在采集到的数据文件包里面查看了“test.mmwave.json”，里面有显示我对adv chirp配置的参数，如下图所示。
因此我理解的是，该函数是成功调用了的。但是当我使用mmwave studio查看chirp config picture时却发现，时频图反映出来的依旧是初始频率恒定的线性调频信号，这表明我的adv chirp配置并未成功。如下图所示。
我想问：
1. 是否是因为“ar1.ChirpConfig_mult”函数配置完12个tx的chirp后，再使用“ar1.AdvChirpConfig”进行adv chirp配置不再生效？如果是这样，我是否应该在代码里用“ar1.AdvChirpConfig”替换“ar1.ChirpConfig_mult”函数，相当于只使用“ar1.AdvChirpConfig”对12个tx以此进行配置，而不再使用“ar1.ChirpConfig_mult”？还是应该用其他流程实现adv chirp配置？
因为“Advanced_Chirp_Example.lua”这个demo似乎不能直接用于级联雷达（这里我理解的对吗？），所以我才想在“Cascade_Configuration_MIMO.lua”的基础上进行修改。
2. 我在gui里面发现chirp配置这里也有start freq var的配置选项，如下图所示。
但是不是只代表我在对每个tx进行chirp配置的时候，每个tx都可以有一个频率增量，但是该增量不会随着chirp个数的增加而增加（有点像adv chirp里面LUT的效果？），而是固定的，即对于该tx发射的chirp，start freq都是在profile的基础上再加这个var？这样似乎就并不能实现步进频率的效果，我依旧只能考虑使用adv chirp相关配置达到我的目的？
