Regarding MT9V034

[Moinelly]

Hey Lee, I have started to work on MT9V034 and so far it is going well in window's. I can control the camera in Trigger mode and auto-trigger mode,can change the exposure timing etc.. but the problem is everything is working good in windows but when i run the python script in Raspberry pi i can't see anything all i can

"device open success! transfer task create success! capture fail! device close success!"

but when i use AR0134 i am getting a display with 3 to 4 fps but i can't get anything in MT9V034

[ArduCAM]

Try to add this line to the example code: ArduCam_writeReg_8_8( useHandle, 0x46, 1, 0x05);

[Moinelly]

Thank you! It worked ArducamSDK.Py_ArduCam_writeReg_8_8( handle, 0x46, 1, 0x05);,I used this

[Moinelly]

I have used your MT9V034_demo.cpp code in raspberry_pi. It is compiling error free but when i run the Test file. i get error

./Test: error while loading shared libraries: libArduCamLib.so: cannot open shared object file: No such file or directory

I have tried - ldd Test,and in the response i got

libArduCamLib.so-not found

and i have tried to update the cache by "sudo ldconfig -v" nothing is solving problem,What could be the solution,can you help me in this how to locate/add shared library ASAP

[ArduCAM]

Please copy these .so files to your /lib and /usr/lib folder.

[Moinelly]

It worked ./Test is working but the error is,

*** Error in ./Test: double free or corruption (fasttop): 0x00410ae8 Aborted

what is this error,I have not made any changes in the code and i copied all the .so files in /lib and /usr/lib folder

[ArduCAM]

run the demo with command "sudo MALLOC_CHECK_=0 ./Test"

[Moinelly]

sudo MALLOC_CHECK_=0 ./Test worked perfectly,The problem now arises is after "ArduCam_open successful" nothing is displayed i.e the code is not going in while loop and stuck there. what is problem here?and can you please provide the solution. Thank you!

[Moinelly]

I'm stuck here!can you please provide the solution because the same thing is happening when i use demo python code for MT9v034, once in a blue moon it's displays the image after that it get stuck in the middle. Please provide the solution to this problem. ASAP Thank you very much

[ArduCAM]

Make sure if the hardware is well connected in Windows before moving to RPI. It seems that your camera is not well connected.

[Moinelly]

I have checked it in windows. It is working perfectly but when i shift it to RPI the problem is encountered. i didn't change the hardware or software. AR0134 is working in RPI but the problem is MT9V034. like i said once in a blue moon it works perfectly in RPI later when i test it. i encounter the same problem. What is the solution? Thank you!

[ArduCAM]

What is blue moon? It is 23:00 here, too late. I will check it tomorrow.

[Moinelly]

It just a phrase,what i was trying to say is the device works randomly,and when i check it again it stuck. we will solve it tomorrow. Thank you for the help!

[Moinelly]

Hey Lee, I have checked MT9V034 in Windows it is working perfectly but when i shift the hardware to Linux/RPI, I'm getting the same problem. The code is stuck and nothing is working.I have checked it in python code and cpp code same problem but i didn't get any problem when i tested AR0134. as far as my knowledge the code is going in While loop(python code) after that it get stuck and even i don't get any response from the thread. What could be the problem? Can you provide a solution ASAP. Thank you

[ArduCAM]

Please try the update example for MT9V034 www.arducam.com/downloads/app/ArduCAM_USB/RPI/MT9V034_RPI_SDK_Demo.tar.gz

[Moinelly]

Thank you! It's working now,can you tell me what was the problem occurred here?

[Moinelly]

i have made following changes in python code to make it work in trigger mode,the problem is the camera is going in trigger mode but not displaying anything. ` def video():

global flag,regArr,handle

data = {}

regNum = 0

res,handle = ArducamSDK.Py_ArduCam_autoopen(cfg)

ArducamSDK.Py_ArduCam_writeReg_8_8(handle, 0x46, 1, 0x05)

ArducamSDK.Py_ArduCam_writeSensorReg(handle, 0x03, 0x1E0)

ArducamSDK.Py_ArduCam_writeSensorReg(handle, 0x04, 0x2F0)

ArducamSDK.Py_ArduCam_writeSensorReg(handle, 0x07, 0x398)
if res == 0:

	openFlag = True

	print "device open success!"

	#while (regArr[regNum][0] != 0xFFFF):

		#ArducamSDK.Py_ArduCam_writeSensorReg(handle,regArr[regNum][0],regArr[regNum][1])

		#regNum = regNum + 1

	res = ArducamSDK.Py_ArduCam_beginCapture(handle)

	#print "Res value \n"

	#print  res

	#ArducamSDK.Py_ArduCam_writeSensorReg( handle, 0x46, 1)

	

	if res == 0:

		print "transfer task create success!"

		while flag :		

			#print "inside the while loop \n"

			res = ArducamSDK.Py_ArduCam_capture(handle)

			if len(data) >= Width * Height:

				if time1 - time0 >= 1:

					print "%s %d %s\n"%("fps:",count,"/s")

					count = 0

					time0 = time1

				show(data)

			

			if res != 0:

				print "capture fail!"

				break

			time.sleep(0.005)

			if flag == False:		

				break

	else:

		print "transfer task create fail!"

	res = ArducamSDK.Py_ArduCam_close(handle)

	if res == 0:

		openFlag = False

		print "device close success!"

	else:

		print "device close fail!"

else:

	print "device open fail!"

if name == "main":

video()

`

[Moinelly]

@ArduCAM Hey , Have you updated your so file.because when i run the code i am getting an import module error for ArducamSDK.Py_ArduCam_available(handle) > 0 I have referred to your library which you shared one month back,in it the spell for available was availiable. Regards, vallabh

[Razbotics]

can i trigger arducam with external pulse at 20hz rate? I need to sync the camera with imu