RuntimeError: Too many retries

[johncliffton]

Hi,

I am struggling getting this to run on an RPi Zero W / PiOS 10 x32, ending up with errors like:
RuntimeError: Too many retries

Thermal sensor is connected:

pi@raspberrypi:~ $ sudo i2cdetect -y 1
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- 33 -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --

Then follwing the guide:

pi@raspberrypi:~ $ python3
Python 3.7.3 (default, Jan 22 2021, 20:04:44)
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import pithermalcam as ptc
>>>
>>> ptc.test_camera()
Camera didn't seem to work properly. Returned the following error:
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/pi/.local/lib/python3.7/site-packages/pithermalcam/__init__.py", line 25, in test_camera
    raise(e)
  File "/home/pi/.local/lib/python3.7/site-packages/pithermalcam/__init__.py", line 11, in test_camera
    thermcam = pithermalcam()  # Instantiate class
  File "/home/pi/.local/lib/python3.7/site-packages/pithermalcam/pi_therm_cam.py", line 50, in __init__
    self.update_image_frame()
  File "/home/pi/.local/lib/python3.7/site-packages/pithermalcam/pi_therm_cam.py", line 227, in update_image_frame
    self._pull_raw_image()
  File "/home/pi/.local/lib/python3.7/site-packages/pithermalcam/pi_therm_cam.py", line 88, in _pull_raw_image
    self.mlx.getFrame(self._raw_image)  # read mlx90640
  File "/home/pi/.local/lib/python3.7/site-packages/adafruit_mlx90640.py", line 126, in getFrame
    status = self._GetFrameData(mlx90640Frame)
  File "/home/pi/.local/lib/python3.7/site-packages/adafruit_mlx90640.py", line 155, in _GetFrameData
    raise RuntimeError("Too many retries")
RuntimeError: Too many retries
>>>

Not sure if this is somhow me doing it wrong or an hardware issue.
I think I can rule out the last part, since I tried this on an RPi3 and even with a second thermal sensor and different wiring.

Would appreciate any suggestions

[tomshaffner]

That's generally the error you get if the baudrate hasn't been increased. Check the documentation about that for instructions. Am Sa., Juli 24, 2021 at 15:29 schrieb ***@***.***>: Hi, I am struggling getting this to run on an RPi Zero W / PiOS 10, ending up with errors like: RuntimeError: Too many retries Thermal sensor is connect: ***@***.***:~ $ sudo i2cdetect -y 1 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- 33 -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- -- Then follwing the guide: ***@***.***:~ $ python3 Python 3.7.3 (default, Jan 22 2021, 20:04:44) [GCC 8.3.0] on linux Type "help", "copyright", "credits" or "license" for more information.

>> import pithermalcam as ptc >> >> ptc.test_camera()

Camera didn't seem to work properly. Returned the following error: Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/home/pi/.local/lib/python3.7/site-packages/pithermalcam/__init__.py", line 25, in test_camera raise(e) File "/home/pi/.local/lib/python3.7/site-packages/pithermalcam/__init__.py", line 11, in test_camera thermcam = pithermalcam() # Instantiate class File "/home/pi/.local/lib/python3.7/site-packages/pithermalcam/pi_therm_cam.py", line 50, in __init__ self.update_image_frame() File "/home/pi/.local/lib/python3.7/site-packages/pithermalcam/pi_therm_cam.py", line 227, in update_image_frame self._pull_raw_image() File "/home/pi/.local/lib/python3.7/site-packages/pithermalcam/pi_therm_cam.py", line 88, in _pull_raw_image self.mlx.getFrame(self._raw_image) # read mlx90640 File "/home/pi/.local/lib/python3.7/site-packages/adafruit_mlx90640.py", line 126, in getFrame status = self._GetFrameData(mlx90640Frame) File "/home/pi/.local/lib/python3.7/site-packages/adafruit_mlx90640.py", line 155, in _GetFrameData raise RuntimeError("Too many retries") RuntimeError: Too many retries

>>

Not sure if this is somhow me doing it wrong or hardware issue. I think I can rule out the last part, since I tried this on an RPi3 and even with a second thermal sensor. Would appreciate any suggestions — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe.

[johncliffton]

That's generally the error you get if the baudrate hasn't been increased. Check the documentation about that for instructions.

Thank you for pointing me in the right direction.
I made an hilarious typo in /boot/config.txt
Problem resolved!