作者：Chris Meng

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毫米波用戶需要通過測試連續(xù)波來確認TI毫米波芯片發(fā)射射頻信號的頻率的準確性。用戶對聯(lián)參考設計板上進行發(fā)射天線的連續(xù)波測試有不同的測試要求。下面介紹三種不同測試場景的測試流程。

測試條件：

1. 硬件平臺: MMWCAS-RF-EVM (revE)/MMWCAS-DSP-EVM
2. PC軟件: mmwave studio 3.00.00.14
3. AWR2243 ES1.1的固件補丁: mmwave_dfp_02_02_03_01
4. 頻譜分析儀

測試場景一

1. 測試要求：對級聯(lián)板上每個AWR2243所有3根發(fā)射天線同時發(fā)射連續(xù)波的測試。

2. 測試流程：

• 先在mmwave studio里運行下面的腳本進行所有4片AWR2243的參數(shù)配置。\mmwave_studio_03_00_00_14\mmWaveStudio\Scripts\Cascade\Cascade_Configuration_ContStream.lua （測試腳本已經(jīng)包含在mmwave studio里）
• 然后運行下面的腳本。這個腳本會先使能芯片Slave 3的連續(xù)波發(fā)射，然后使能Slave2， Slave1，Master芯片。接著停止所有芯片的信號發(fā)射。最后保存相關ADC數(shù)據(jù)到SSD硬盤上，傳送給PC。\mmwave_studio_03_00_00_14\mmWaveStudio\Scripts\Cascade\Cascade_Capture_ContStream.lua（測試腳本已經(jīng)包含在mmwave studio里）
• 通過頻譜儀抓取和觀測芯片的發(fā)射信號。

測試場景二

1. 測試要求：對級聯(lián)板的AWR2243 主芯片（master）的單發(fā)射天線進行連續(xù)波的測試。

2. 測試流程：

以主芯片的TX0天線為例 (RadarDevice1)

a. 配置主芯片。

在mmwave studio里運行下面的腳本：

Cascade_Configuration_ContStream_master_example.lua （具體內(nèi)容見附錄）

運行腳本后的mmwave studio界面信息如下：

b. 發(fā)射連續(xù)波。

運行下面的腳本：\mmwave_studio_03_00_00_14\mmWaveStudio\Scripts\Cascade\Cascade_Capture_ContStream.lua（測試腳本已經(jīng)包含在mmwave studio里）

c. 通過頻譜儀抓取和觀測芯片的發(fā)射信號。

測試場景三

1. 測試要求：對級聯(lián)板的AWR2243 從芯片（slave）的單發(fā)射天線進行連續(xù)波的測試。

2. 測試流程：

以slave2芯片的TX1天線為例 (RadarDevice3)

a. 配置從芯片。

在mmwave studio里運行下面的腳本：Cascade_Configuration_ContStream_slave_example.lua（具體內(nèi)容見附錄）

運行腳本后的mmwave studio界面信息如下：

b. 發(fā)射連續(xù)波。

運行下面的腳本：\mmwave_studio_03_00_00_14\mmWaveStudio\Scripts\Cascade\Cascade_Capture_ContStream.lua（測試腳本已經(jīng)包含在mmwave studio里）

c. 通過頻譜儀抓取和觀測芯片的發(fā)射信號。

注意事項：

如果改變了AWR2243的ChanNAdcConfig_mult 參數(shù)（相對于上一次配置），用戶必須對板子進行斷電，再上電的操作。

常見問題：

1. 問題：如何使能、不使能主芯片或者是從芯片里的不同發(fā)射天線TX？

答案:：用戶需要修改配置參數(shù)的LUA腳本里ar1.ChanNAdcConfig_mult 函數(shù)的Tx0En/Tx1En/Tx2En 參數(shù)。關于這個函數(shù)的更多信息見下。對于Tx0En/Tx1En/Tx2En， 1表示使能，0表示不使能。

Int32 ar1.ChanNAdcConfig_mult(UInt16 RadarDeviceId, UInt16 Tx0En, UInt16 Tx1En, UInt16 Tx2En, UInt16 Rx0En, UInt16 Rx1En, UInt16 Rx2En, UInt32 Rx3En, Int32 BitsVal, UInt32 FmtVal, UInt32 IQSwap, UInt16 CasCadeMode) -? Static device config API which defines configure both the Transmiter and Reciever channels of Radar device and also ADC data format output

_I_ UInt16???? RadarDeviceId????? - Radar Device Id

_I_ UInt16???? Tx0En???? - Tx0 channel

_I_ UInt16???? Tx1En???? - Tx1 channel

_I_ UInt16???? Tx2En???? - Tx2 channel

_I_ UInt16???? Rx0En???? - Rx0 channel

_I_ UInt16???? Rx1En???? - Rx1 channnel

_I_ UInt16???? Rx2En???? - Rx2 channel

_I_ UInt32???? Rx3En???? - Rx3 channel[b15:0] + (CascadePinOutCfg[b31:16] b16:ClkOutMasterDis, b17:SynOutMasterDis, b18:ClkOutSlaveEna, b19:SynOutSlaveEna, b20:IntLOMasterEna, b21:OSCClkOutMasterDis, b22:INTFRCMasterEna)

_I_ Int32??????? BitsVal??? - Number of ADC bits

_I_ UInt32???? FmtVal??? - ADC output format[b15:0] + FullScaleReductionFactor[b31:16]

_I_ UInt32???? IQSwap?? - ADC Mode

_I_ UInt16???? CasCadeMode????? - CascadeMode(Single Chip: 0x0000, MultiChip Master:0x0001, MultiChip Slave:0x0002)

2. 問題：如何使能或者關閉級聯(lián)板上不同的從芯片？

答案：用戶需要修改配置參數(shù)的LUA里RadarDevice的設置。RadarDevice里dev1是主芯片，dev2、dev3、dev4是從芯片。

例如： RadarDevice??????? =??? {1, 0, 1, 0}?????? -- {dev1, dev2, dev3, dev4}, 1: Enable, 0: Disable

3. 問題：如何改變連續(xù)波的頻率？

答案：用戶需要修改配置參數(shù)的LUA里ar1.ContStrConfig_mult函數(shù)的startFreqConst參數(shù)值。

Int32 ar1.ContStrConfig_mult(UInt16 RadarDeviceId, Double startFreqConst, UInt16 digOutSampleRate, Char rxGain, Char hpfCornerFreq1, Char hpfCornerFreq2, UInt32 tx0OutPowerBackoffCode, UInt32 tx1OutPowerBackoffCode, UInt32 tx2OutPowerBackoffCode, UInt16 tx0PhaseShifter, UInt16 tx1PhaseShifter, UInt32 tx2PhaseShifter) - Continuous Streming Configuration API defines Configuration of the data path to transfer the captured ADC samples continuously without missing any sample to external Device(host)

_I_ UInt16???? RadarDeviceId????? - Radar Device Id

_I_ Double??? startFreqConst????? - Start Frequency for each profile of chirp in GHz

_I_ UInt16???? digOutSampleRate?????????????? - ADC sampling rate for each profile in ksps

_I_ Char???????? rxGain??? - Rx gain for each profile in dB

_I_ Char???????? hpfCornerFreq1?? - HPF1 corner frequency for each profile in KHz

_I_ Char???????? hpfCornerFreq2?? - HPF2 corner frequency for each profile in KHz

_I_ UInt32???? tx0OutPowerBackoffCode - How much the trasmit power should be reduced from Max in Tx0 Channel

_I_ UInt32???? tx1OutPowerBackoffCode - How much the trasmit power should be reduced from Max in Tx1 Channel

_I_ UInt32???? tx2OutPowerBackoffCode - How much the trasmit power should be reduced from Max in Tx2 Channel

_I_ UInt16???? tx0PhaseShifter??? - The additional phase shift to be introduced on Tx0 Channel

_I_ UInt16???? tx1PhaseShifter??? - The additional phase shift to be introduced on Tx1 Channel

_I_ UInt32???? tx2PhaseShifter??? - The additional phase shift to be introduced on Tx2 Channel(b0:15) + ForceSelect(b16) + VCOSelecct(b17))

附錄：

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1.	Cascade_Configuration_ContStream_master_example.lua
----------------------------------------User Constants--------------------------------------------
       
dev_list           =    {1, 2, 4, 8}       -- Device map
RadarDevice        =    {1, 0, 0, 0}       -- {dev1, dev2, dev3, dev4}, 1: Enable, 0: Disable
cascade_mode_list  =    {0, 2, 2, 2}       -- 0: Single chip, 1: Master, 2: Slave //Chris: need to set in code directly

-- F/W Download Path

-- Uncomment the next line if you wish to pop-up a dialog box to select the firmware image file
-- Otherwise, hardcode the path to the firmware metaimage below
-- By default, the firmware filename is: xwr22xx_metaImage.bin

-- metaImagePath   =   RSTD.BrowseForFile(RSTD.GetSettingsPath(), "bin", "Browse to .bin file")
-- For 2243 ES1.1 devices
metaImagePath            =   "C:\\ti\\mmwave_dfp_02_02_03_01\\firmware\\xwr22xx_metaImage.bin"
-- For 2243 ES1.0 devices
-- metaImagePath            =   "C:\\ti\\mmwave_dfp_02_02_00_02\\firmware\\xwr22xx_metaImage.bin"

-- IP Address for the TDA2 Host Board
-- Change this accordingly for your setup

TDA_IPAddress           =   "192.168.33.180"

-- Device map of all the devices to be enabled by TDA
-- 1 - master ; 2- slave1 ; 4 - slave2 ; 8 - slave3

deviceMapOverall  =   RadarDevice[1] + (RadarDevice[2]*2) + (RadarDevice[3]*4) + (RadarDevice[4]*8)
deviceMapSlaves   =   (RadarDevice[2]*2) + (RadarDevice[3]*4) + (RadarDevice[4]*8)          
 
------------------------------ API Configuration ------------------------------------------------
    
-- 1. Connection to TDA. 2. Selecting Cascade/Single Chip.  3. Selecting 2-chip/4-chip

WriteToLog("Setting up Studio for Cascade started..\n", "blue")

if(0 == ar1.ConnectTDA(TDA_IPAddress, 5001, deviceMapOverall)) then
    WriteToLog("ConnectTDA Successful\n", "green")
else
    WriteToLog("ConnectTDA Failed\n", "red")
    return -1
end

if(0 == ar1.selectCascadeMode(1)) then
    WriteToLog("selectCascadeMode Successful\n", "green")
else
    WriteToLog("selectCascadeMode Failed\n", "red")
    return -1
end

WriteToLog("Setting up Studio for Cascade ended..\n", "blue")
         
--Master Initialization

-- SOP Mode Configuration
if (0 == ar1.SOPControl_mult(1, 4)) then
    WriteToLog("Master : SOP Reset Successful\n", "green")
else
    WriteToLog("Master : SOP Reset Failed\n", "red")
    return -1
end

-- SPI Connect
if (0 == ar1.PowerOn_mult(1, 0, 1000, 0, 0)) then
    WriteToLog("Master : SPI Connection Successful\n", "green")
else
    WriteToLog("Master : SPI Connection Failed\n", "red")
    return -1
end

-- Firmware Download. (SOP 4 - MetaImage)
if (0 == ar1.DownloadBssFwOvSPI_mult(1, metaImagePath)) then
    WriteToLog("Master : FW Download Successful\n", "green")
else
    WriteToLog("Master : FW Download Failed\n", "red")
    return -1
end

-- RF Power Up
if (0 == ar1.RfEnable_mult(1)) then
    WriteToLog("Master : RF Power Up Successful\n", "green")
else
    WriteToLog("Master : RF Power Up Failed\n", "red")
    return -1
end            
         
-- Channel & ADC Configuration
if (0 == ar1.ChanNAdcConfig_mult(1,1,0,0,1,1,1,1,2,1,0,0)) then
    WriteToLog("Master : Channel & ADC Configuration Successful\n", "green")
else
    WriteToLog("Master : Channel & ADC Configuration Failed\n", "red")
    return -2
end
    
            
-- All devices together        
          
-- Including this depends on the type of board being used.
-- LDO configuration
if (0 == ar1.RfLdoBypassConfig_mult(deviceMapOverall, 3)) then
    WriteToLog("LDO Bypass Successful\n", "green")
else
    WriteToLog("LDO Bypass failed\n", "red")
    return -2
end

-- Low Power Mode Configuration
if (0 == ar1.LPModConfig_mult(deviceMapOverall,0, 0)) then
    WriteToLog("Low Power Mode Configuration Successful\n", "green")
else
    WriteToLog("Low Power Mode Configuration failed\n", "red")
    return -2
end

-- Miscellaneous Control Configuration
if (0 == ar1.SetMiscConfig_mult(deviceMapOverall, 1, 0, 0, 0)) then
    WriteToLog("Misc Control Configuration Successful\n", "green")
else
    WriteToLog("Misc Control Configuration failed\n", "red")
    return -2
end

-- Edit this API to enable/disable the boot time calibration. Enabled by default.
-- RF Init Calibration Configuration
if (0 == ar1.RfInitCalibConfig_mult(deviceMapOverall, 1, 1, 1, 1, 1, 1, 1, 65537)) then
    WriteToLog("RF Init Calibration Successful\n", "green")
else
    WriteToLog("RF Init Calibration failed\n", "red")
    return -2
end
         
-- RF Init
if (0 == ar1.RfInit_mult(deviceMapOverall)) then
    WriteToLog("RF Init Successful\n", "green")
else
    WriteToLog("RF Init failed\n", "red")
    return -2
end

---------------------------Data Configuration----------------------------------
        
-- Data path Configuration
if (0 == ar1.DataPathConfig_mult(deviceMapOverall, 0, 1, 0)) then
    WriteToLog("Data Path Configuration Successful\n", "green")
else
    WriteToLog("Data Path Configuration failed\n", "red")
    return -3
end

-- Clock Configuration
if (0 == ar1.LvdsClkConfig_mult(deviceMapOverall, 1, 1)) then
    WriteToLog("Clock Configuration Successful\n", "green")
else
    WriteToLog("Clock Configuration failed\n", "red")
    return -3
end

-- CSI2 Configuration
if (0 == ar1.CSI2LaneConfig_mult(deviceMapOverall, 1, 0, 2, 0, 4, 0, 5, 0, 3, 0, 0)) then
    WriteToLog("CSI2 Configuration Successful\n", "green")
else
    WriteToLog("CSI2 Configuration failed\n", "red")
    return -3
end

2.	Cascade_Configuration_ContStream_slave_example.lua
----------------------------------------User Constants--------------------------------------------
       
dev_list           =    {1, 2, 4, 8}       -- Device map
RadarDevice        =    {1, 0, 1, 0}       -- {dev1, dev2, dev3, dev4}, 1: Enable, 0: Disable
cascade_mode_list  =    {1, 2, 2, 2}       -- 0: Single chip, 1: Master, 2: Slave

-- F/W Download Path

-- Uncomment the next line if you wish to pop-up a dialog box to select the firmware image file
-- Otherwise, hardcode the path to the firmware metaimage below
-- By default, the firmware filename is: xwr22xx_metaImage.bin

-- metaImagePath   =   RSTD.BrowseForFile(RSTD.GetSettingsPath(), "bin", "Browse to .bin file")
-- For 2243 ES1.1 devices
metaImagePath            =   "C:\\ti\\mmwave_dfp_02_02_03_01\\firmware\\xwr22xx_metaImage.bin"
-- For 2243 ES1.0 devices
-- metaImagePath            =   "C:\\ti\\mmwave_dfp_02_02_00_02\\firmware\\xwr22xx_metaImage.bin"

-- IP Address for the TDA2 Host Board
-- Change this accordingly for your setup

TDA_IPAddress           =   "192.168.33.180"

-- Device map of all the devices to be enabled by TDA
-- 1 - master ; 2- slave1 ; 4 - slave2 ; 8 - slave3

deviceMapOverall  =   RadarDevice[1] + (RadarDevice[2]*2) + (RadarDevice[3]*4) + (RadarDevice[4]*8)
deviceMapSlaves   =   (RadarDevice[2]*2) + (RadarDevice[3]*4) + (RadarDevice[4]*8)          
 
------------------------------ API Configuration ------------------------------------------------
    
-- 1. Connection to TDA. 2. Selecting Cascade/Single Chip.  3. Selecting 2-chip/4-chip

WriteToLog("Setting up Studio for Cascade started..\n", "blue")

if(0 == ar1.ConnectTDA(TDA_IPAddress, 5001, deviceMapOverall)) then
    WriteToLog("ConnectTDA Successful\n", "green")
else
    WriteToLog("ConnectTDA Failed\n", "red")
    return -1
end

if(0 == ar1.selectCascadeMode(1)) then
    WriteToLog("selectCascadeMode Successful\n", "green")
else
    WriteToLog("selectCascadeMode Failed\n", "red")
    return -1
end

WriteToLog("Setting up Studio for Cascade ended..\n", "blue")
         
--Master Initialization

-- SOP Mode Configuration
if (0 == ar1.SOPControl_mult(1, 4)) then
    WriteToLog("Master : SOP Reset Successful\n", "green")
else
    WriteToLog("Master : SOP Reset Failed\n", "red")
    return -1
end

-- SPI Connect
if (0 == ar1.PowerOn_mult(1, 0, 1000, 0, 0)) then
    WriteToLog("Master : SPI Connection Successful\n", "green")
else
    WriteToLog("Master : SPI Connection Failed\n", "red")
    return -1
end

-- Firmware Download. (SOP 4 - MetaImage)
if (0 == ar1.DownloadBssFwOvSPI_mult(1, metaImagePath)) then
    WriteToLog("Master : FW Download Successful\n", "green")
else
    WriteToLog("Master : FW Download Failed\n", "red")
    return -1
end

-- RF Power Up
if (0 == ar1.RfEnable_mult(1)) then
    WriteToLog("Master : RF Power Up Successful\n", "green")
else
    WriteToLog("Master : RF Power Up Failed\n", "red")
    return -1
end            
         
-- Channel & ADC Configuration
if (0 == ar1.ChanNAdcConfig_mult(1,0,0,0,1,1,1,1,2,1,0,1)) then
    WriteToLog("Master : Channel & ADC Configuration Successful\n", "green")
else
    WriteToLog("Master : Channel & ADC Configuration Failed\n", "red")
    return -2
end
    
-- Slaves Initialization
   
for i=2,table.getn(RadarDevice) do 
    local status    =    0                
    if ((RadarDevice[1]==1) and (RadarDevice[i]==1)) then
      
        -- SOP Mode Configuration
        if (0 == ar1.SOPControl_mult(dev_list[i], 4)) then
            WriteToLog("Device "..i.." : SOP Reset Successful\n", "green")
        else
            WriteToLog("Device "..i.." : SOP Reset Failed\n", "red")
            return -1
        end
                
        -- SPI Connect    
        if (0 == ar1.AddDevice(dev_list[i])) then
            WriteToLog("Device "..i.." : SPI Connection Successful\n", "green")
        else
            WriteToLog("Device "..i.." : SPI Connection Failed\n", "red")
            return -1
        end
           
    end
end  
    
-- Firmware Download. (SOP 4 - MetaImage)
if (0 == ar1.DownloadBssFwOvSPI_mult(deviceMapSlaves, metaImagePath)) then
    WriteToLog("Slaves : FW Download Successful\n", "green")
else
    WriteToLog("Slaves : FW Download Failed\n", "red")
    return -1
end
         
-- RF Power Up
if (0 == ar1.RfEnable_mult(deviceMapSlaves)) then
    WriteToLog("Slaves : RF Power Up Successful\n", "green")
else
    WriteToLog("Slaves : RF Power Up Failed\n", "red")
    return -1
end    

-- Channel & ADC Configuration
if (0 == ar1.ChanNAdcConfig_mult(deviceMapSlaves,0,1,0,1,1,1,1,2,1,0,2)) then
    WriteToLog("Slaves : Channel & ADC Configuration Successful\n", "green")
else
    WriteToLog("Slaves : Channel & ADC Configuration Failed\n", "red")
    return -2
end
            
-- All devices together        
          
-- Including this depends on the type of board being used.
-- LDO configuration
if (0 == ar1.RfLdoBypassConfig_mult(deviceMapOverall, 3)) then
    WriteToLog("LDO Bypass Successful\n", "green")
else
    WriteToLog("LDO Bypass failed\n", "red")
    return -2
end

-- Low Power Mode Configuration
if (0 == ar1.LPModConfig_mult(deviceMapOverall,0, 0)) then
    WriteToLog("Low Power Mode Configuration Successful\n", "green")
else
    WriteToLog("Low Power Mode Configuration failed\n", "red")
    return -2
end

-- Miscellaneous Control Configuration
if (0 == ar1.SetMiscConfig_mult(deviceMapOverall, 1, 0, 0, 0)) then
    WriteToLog("Misc Control Configuration Successful\n", "green")
else
    WriteToLog("Misc Control Configuration failed\n", "red")
    return -2
end

-- Edit this API to enable/disable the boot time calibration. Enabled by default.
-- RF Init Calibration Configuration
if (0 == ar1.RfInitCalibConfig_mult(deviceMapOverall, 1, 1, 1, 1, 1, 1, 1, 65537)) then
    WriteToLog("RF Init Calibration Successful\n", "green")
else
    WriteToLog("RF Init Calibration failed\n", "red")
    return -2
end
         
-- RF Init
if (0 == ar1.RfInit_mult(deviceMapOverall)) then
    WriteToLog("RF Init Successful\n", "green")
else
    WriteToLog("RF Init failed\n", "red")
    return -2
end

---------------------------Data Configuration----------------------------------
        
-- Data path Configuration
if (0 == ar1.DataPathConfig_mult(deviceMapOverall, 0, 1, 0)) then
    WriteToLog("Data Path Configuration Successful\n", "green")
else
    WriteToLog("Data Path Configuration failed\n", "red")
    return -3
end

-- Clock Configuration
if (0 == ar1.LvdsClkConfig_mult(deviceMapOverall, 1, 1)) then
    WriteToLog("Clock Configuration Successful\n", "green")
else
    WriteToLog("Clock Configuration failed\n", "red")
    return -3
end

-- CSI2 Configuration
if (0 == ar1.CSI2LaneConfig_mult(deviceMapOverall, 1, 0, 2, 0, 4, 0, 5, 0, 3, 0, 0)) then
    WriteToLog("CSI2 Configuration Successful\n", "green")
else
    WriteToLog("CSI2 Configuration failed\n", "red")
    return -3
end

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