Fails to read from multiple cameras

[sourishg]

Hi, I'm running this repo on an Xavier AGX module. It works fine when I read only from the master camera (device-id=0). However, my use case requires me to get the data from multiple LI-IMX264-MIPI-M12 cameras (which are hardware synced). This is the code I'm trying to run:

print('Create cam0')
cam0 = ArgusCamera(
    device_id=0,
    stream_resolution=(2448, 2058),
    video_converter_resolution=(2448, 2058), 
    frame_duration_range=(int(1e9//24), int(1e9//24))
)
print('Create cam2')
cam2 = ArgusCamera(
    device_id=2,
    stream_resolution=(2448, 2058),
    video_converter_resolution=(2448, 2058), 
    frame_duration_range=(int(1e9//24), int(1e9//24))
)
while (True):
    t1 = time.time()
    im0 = cam0.read()
    im2 = cam2.read()
    t2 = time.time()

It results in the following output/error:

Create cam0
Opening in BLOCKING MODE
OFParserListModules: module list: /proc/device-tree/tegra-camera-platform/modules/module0
OFParserListModules: module list: /proc/device-tree/tegra-camera-platform/modules/module1
OFParserListModules: module list: /proc/device-tree/tegra-camera-platform/modules/module2
OFParserListModules: module list: /proc/device-tree/tegra-camera-platform/modules/module3
OFParserListModules: module list: /proc/device-tree/tegra-camera-platform/modules/module4
OFParserListModules: module list: /proc/device-tree/tegra-camera-platform/modules/module5
NvPclHwGetModuleList: WARNING: Could not map module to ISP config string
NvPclHwGetModuleList: No module data found
NvPclHwGetModuleList: WARNING: Could not map module to ISP config string
NvPclHwGetModuleList: No module data found
NvPclHwGetModuleList: WARNING: Could not map module to ISP config string
NvPclHwGetModuleList: No module data found
NvPclHwGetModuleList: WARNING: Could not map module to ISP config string
NvPclHwGetModuleList: No module data found
NvPclHwGetModuleList: WARNING: Could not map module to ISP config string
NvPclHwGetModuleList: No module data found
NvPclHwGetModuleList: WARNING: Could not map module to ISP config string
NvPclHwGetModuleList: No module data found
OFParserGetVirtualDevice: NVIDIA Camera virtual enumerator not found in proc device-tree
---- imager: Found override file [/var/nvidia/nvcam/settings/camera_overrides.isp]. ----
CAM: serial no file already exists, skips storing againLSC: LSC surface is not based on full res!
---- imager: Found override file [/var/nvidia/nvcam/settings/camera_overrides.isp]. ----
CAM: serial no file already exists, skips storing againLSC: LSC surface is not based on full res!
---- imager: Found override file [/var/nvidia/nvcam/settings/camera_overrides.isp]. ----
CAM: serial no file already exists, skips storing againLSC: LSC surface is not based on full res!
---- imager: Found override file [/var/nvidia/nvcam/settings/camera_overrides.isp]. ----
CAM: serial no file already exists, skips storing againLSC: LSC surface is not based on full res!
---- imager: Found override file [/var/nvidia/nvcam/settings/camera_overrides.isp]. ----
CAM: serial no file already exists, skips storing againLSC: LSC surface is not based on full res!
---- imager: Found override file [/var/nvidia/nvcam/settings/camera_overrides.isp]. ----
CAM: serial no file already exists, skips storing againLSC: LSC surface is not based on full res!
CAM: serial no file already exists, skips storing againLSC: LSC surface is not based on full res!
NvIspAfConfigParamsSanityCheck: Error: positionWorkingHigh is not larger than positionWorkingLow positionWorkingHigh = 0, positionWorkingLow = 0

NvIspAfConfigParamsSanityCheck: Error: positionWorkingHigh is not larger than positionWorkingLow positionWorkingHigh = 0, positionWorkingLow = 0

NvIspAfConfigParamsSanityCheck: Error: positionWorkingHigh is not larger than positionWorkingLow positionWorkingHigh = 0, positionWorkingLow = 0

libv4l2_nvvidconv (0):(802) (INFO) : Allocating (1) OUTPUT PLANE BUFFERS Layout=0
libv4l2_nvvidconv (0):(818) (INFO) : Allocating (1) CAPTURE PLANE BUFFERS Layout=0
Create cam2
(NvCamV4l2) Error IoctlFailed:  (in /dvs/git/dirty/git-master_linux/camera/utils/nvcamv4l2/v4l2_device.cpp, function setControlValMultiple(), line 792)
(NvOdmDevice) Error IoctlFailed:  (propagating from dvs/git/dirty/git-master_linux/camera-partner/imager/src/devices/V4L2SensorViCsi.cpp, function setDeviceControls(), line 1901)
updateOutputSettings: Set Control failed. Use cached values
(NvCamV4l2) Error IoctlFailed:  (in /dvs/git/dirty/git-master_linux/camera/utils/nvcamv4l2/v4l2_device.cpp, function setControlValMultiple(), line 792)
(NvOdmDevice) Error IoctlFailed:  (propagating from dvs/git/dirty/git-master_linux/camera-partner/imager/src/devices/V4L2SensorViCsi.cpp, function setDeviceControls(), line 1901)
updateOutputSettings: Set Control failed. Use cached values
Opening in BLOCKING MODE
(Argus) Error InvalidState: CaptureProvider destroyed (in src/api/CameraProviderImpl.cpp, function createCaptureSession(), line 213)
(Argus) Error InvalidState: Object was already destroyed (in src/common/ObjectImpl.cpp, function destroyClientReference(), line 47)
PowerServiceCore:handleRequests: timePassed = 621
Traceback (most recent call last):
  File "x6c.py", line 246, in <module>
    run(args.experiment)
  File "x6c.py", line 145, in run
    im2 = cam2.read()
  File "/home/mhi/.local/lib/python3.6/site-packages/argus_camera-0.0-py3.6-linux-aarch64.egg/argus_camera/argus_camera.py", line 29, in read
    self.camera.read(image.ctypes.data)
AttributeError: 'NoneType' object has no attribute 'read'
(Argus) Objects still active during exit: [CameraProvider (0x3740c400): refs: 1, cref: 0]
(NvCameraUtils) Error InvalidState: Mutex not initialized (/dvs/git/dirty/git-master_linux/camera/core_scf/src/services/buffermanager/BufferManager.cpp:179) (in Mutex.cpp, function lock(), line 79)
(NvCameraUtils) Error InvalidState: Mutex not initialized (/dvs/git/dirty/git-master_linux/camera/core_scf/src/services/buffermanager/BufferManager.cpp:158) (in Mutex.cpp, function lock(), line 79)
SCF: Error BadParameter: invalid RequirementsId (in src/services/buffermanager/BufferManager.cpp, function idToPool(), line 168)
(NvCameraUtils) Error InvalidState: Mutex has not been initialized (in Mutex.cpp, function unlock(), line 88)
SCF: Error BadParameter:  (propagating from src/services/buffermanager/BufferManager.cpp, function acquire(), line 180)
(NvCameraUtils) Error InvalidState: Mutex has not been initialized (in Mutex.cpp, function unlock(), line 88)
SCF: Error BadParameter:  (propagating from src/components/stages/TempBufferAcquireStage.cpp, function doExecute(), line 61)
SCF: Error BadParameter: Sending critical error event (in src/api/Session.cpp, function sendErrorEvent(), line 992)
SCF: Error InvalidState: Instance Mutex failed to initialize in c'tor (in src/services/buffermanager/BufferManager.cpp, function getInstance(), line 72)
SCF: Error InvalidState:  (propagating from src/services/buffermanager/BufferManager.cpp, function getInstance(), line 100)
SCF: Error InvalidState:  (propagating from src/components/CaptureContainerImpl.cpp, function returnBuffer(), line 399)
SCF: Error InvalidState:  (propagating from src/components/CaptureContainerImpl.cpp, function returnAllBuffers(), line 530)
SCF: Error InvalidState: Instance Mutex failed to initialize in c'tor (in src/services/buffermanager/BufferManager.cpp, function getInstance(), line 72)
SCF: Error InvalidState:  (propagating from src/services/buffermanager/BufferManager.cpp, function getInstance(), line 100)
SCF: Error InvalidState:  (propagating from src/components/CaptureContainerImpl.cpp, function returnBuffer(), line 399)
SCF: Error InvalidState:  (propagating from src/components/CaptureContainerImpl.cpp, function returnAllBuffers(), line 530)

Can anyone tell me what I'm doing wrong? It seems read works fine for cam0 but for cam2 it throws an error.
Thanks a lot.