Connect Three Lepton on Raspberry Pi 3

[MicheleMussi]

Good morning,
I would like use three lepton to the raspberry, with your library.
Is this possible?

Running this example

import numpy as np
import cv2
from pylepton import Lepton

with Lepton("/dev/spidev1.0") as l:
a,_ = l.capture(None,True,True,True)
cv2.normalize(a, a, 0, 65535, cv2.NORM_MINMAX) # extend contrast
np.right_shift(a, 8, a) # fit data into 8 bits
cv2.imwrite("python3.jpg", np.uint8(a)) # write it!

it works with
with Lepton("/dev/spidev0.0") as l:
with Lepton("/dev/spidev0.1") as l:

after running the program on one port it does not work on the next one until the raspberry is restarted

not work with
with Lepton("/dev/spidev1.0") as l:
The error is:

From the following error
Traceback (most recent call last):
File "3Capture.py", line 7, in
with Lepton ("/ dev / spidev1.0") as l:
File "/usr/local/lib/python2.7/dist-packages/pylepton/Lepton.py", line 85, in enter
ioctl (self .__ handle, SPI_IOC_WR_MODE, struct.pack ("= B", Lepton.MODE))
IOError: [Errno 22] Invalid argument

but the ports exist

pi @ raspberrypi: ~ / Bm / ConveyorApp / Sender $ ls / dev / spidev *
/dev/spidev0.0 /dev/spidev0.1 /dev/spidev1.0 /dev/spidev1.1 /dev/spidev1.2

Thanks for your help

[dylandxt]

I ran into the same issue. In Lepton.py it is trying to set the SPI mode to 3. I believe it is not supported by SPI1 on RPi. https://forums.raspberrypi.com//viewtopic.php?t=149981