No Devices Found - Numato-GPIO (Python on Mac)

[sblynch]

Board: Numato USB GPIO 64 OS: MacOS 12.5

When I try to use this code in Python:

my_device_id = 0 gpio.discover() device = gpio.devices[my_device_id]

I get this exception:

device = gpio.devices[my_device_id] KeyError: 0

I've run python3 -m numato_gpio from terminal, and this is what it says:

Discovered devices: (None)

Even though the device is showing up as /dev/tty.usbmodem144101 when I run ls /dev/usb

Can you offer guidance on how I can get this USB GPIO 64 to connect in Python on MacOS? Thanks!

[paulvivier]

I'm right there with you @sblynch and am trying to solve the same/similar only I have a GPIO 16 device. I'm assuming it's not working as part of the "known issues" in the README: " Only /dev/ACMx devices are scanned which were mapped on the author's Linux "

Based on that, though, I have a more specific question: Are there specific areas of the code that the @clssn would recommend that we look at refactoring so they would also work for devices like /dev/tty.usbmodem144101 ? My Python knowledge is entry 200 level, but I'd be open to trying.

BTW, here's my output from running % python -m numato_gpio (I manually set DEFAULT_DEVICES = ["/dev/tty.usbmodem14301"] )

device_file in dev_files: /dev/tty.usbmodem14301
Devices = {}
self._write
self._drain_ser_buffer() = None
Poll thread start: = True
start hasattr
writing id get
Response from device:
id get
00000005
>
eol = 

self.eol = 

start hasattr
writing id get
Response from device:
id get
00000005
>
eol = 

self.eol = 

self._detect_eol() = None
self._MASK_ALL_PORTS = 65535
self._HEX_DIGITS = 4
self._callback = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
self._edge = [None, None, None, None, None, None, None, None, None, None, None, None, None, None, None, None]
Discovered devices : (None)

[clssn]

Hi @sblynch and @paulvivier , sorry for not being very responsive/helpful recently. Unfortunately I have zero experience with MacOS. In theory the only OS dependent thing should be the device specifier to initialize the serial connection. I am developing solely in Linux so far and thus I'm only discovering from devices according to Linux conventions (/dev/ttyACM0 etc.). As @paulvivier seems to already have tried, I'd suggest to adapt the DEFAULT_DEVICES array, or just manually instantiate your NumatoUsbGpio object when you're using the Python API. Maybe just re-try with the current 0.12.0 which allows for non-integer responses to ver queries, or wait for the soon-ready 0.13.0 which drops all end-of-line characters while reading from the device. This makes all weird, but existing combinations of end-of-line sequences from the different device variants acceptable.