Dependency and pip version problem

[rainerfritz]

Hi!

I try to get the library running on an RPi 3b+ with the 64bit OS headless. The board I am using is the waveshare board with SX1262 via SPI and GPS via serial.

When I compare the version if install directly LoRa RF via pip3 install LoRaRF, the base.py file seems not uptodate as it misses the classes LoraSPI and LoraGpio. So i am going with the version here from github, manual install in an venv.

I do the following:
-create virtual env for python
python -m venv lora

--activate if not already
source lora/bin/activate

--get the LoRa Repo from git - pip is not actual

cd lora
git clone https://github.com/chandrawi/LoRaRF-Python.git

--install dependencies

pip3 install wheel
pip3 install spidev
pip3 install gpiod

--install LoRaRF

cd LoRaRF-Python
python3 setup.py bdist_wheel
pip3 install dist/LoRaRF-1.4.0-py3-none-any.whl

--try to call the receiver example:
python3 examples/SX126x/receiver.py

Gives the Error:

Begin LoRa radio
Traceback (most recent call last):
  File "/home/rainer/lora/LoRaRF-Python/examples/SX126x/receiver.py", line 15, in <module>
    if not LoRa.begin() :
           ^^^^^^^^^^^^
  File "/home/rainer/lora/lib/python3.11/site-packages/LoRaRF/SX126x.py", line 293, in begin
    self.reset()
  File "/home/rainer/lora/lib/python3.11/site-packages/LoRaRF/SX126x.py", line 310, in reset
    self._reset.output(LoRaGpio.LOW)
  File "/home/rainer/lora/lib/python3.11/site-packages/LoRaRF/base.py", line 36, in output
    chip = gpiod.Chip(self.chip)
           ^^^^^^^^^^^^^^^^^^^^^
  File "/home/rainer/lora/lib/python3.11/site-packages/gpiod/chip.py", line 58, in __init__
    self._chip = _ext.Chip(path)

             ^^^^^^^^^^^^^^^

FileNotFoundError: [Errno 2] No such file or directory

Can it be, that the actual gpiod version 2.1.3 does not work with the code currently?

I changed then in the chip.py the line self._chip = _ext.Chip(path) to self._chip = _ext.Chip("/dev/gpiochip0") which seems to work, but then the chip object complains:

Begin LoRa radio
Traceback (most recent call last):
  File "/home/rainer/lora/LoRaRF-Python/examples/SX126x/receiver.py", line 15, in <module>
    if not LoRa.begin() :
           ^^^^^^^^^^^^
  File "/home/rainer/lora/lib/python3.11/site-packages/LoRaRF/SX126x.py", line 293, in begin
    self.reset()
  File "/home/rainer/lora/lib/python3.11/site-packages/LoRaRF/SX126x.py", line 310, in reset
    self._reset.output(LoRaGpio.LOW)
  File "/home/rainer/lora/lib/python3.11/site-packages/LoRaRF/base.py", line 38, in output
    line = chip.get_line(self.offset)
           ^^^^^^^^^^^^^
AttributeError: 'Chip' object has no attribute 'get_line'. Did you mean: 'get_info'?

Any help to get it running would be awesome.
THX, Rainer

[JulianGa05]

Hello Rainer,

I am currently facing the same issue. Have you managed to fix it yet?

Best regards
Julian

Edit: I fixed it with the solution described in issue#19

[rainerfritz]

I try to get the waveshare lora hat running with SX1262 and gps. Took me a little bit to find the right documentation. They provide a LoRaRF version, which works out of the box. I had no time so far to have a look where they modified it. If you want to have a look in the meanwhile here is the link. Scroll down to the bottom of the page: waveshare lorarf library

[JulianGa05]

Wow, how could I have not found that earlier? Thank you for that! I was always just relayed to a different product page that had only useless demo code. To be honest though, I am still not able to make it work. I've tried to use the transmitter.py example and at first I got an error with the call to SX126x() and after I fixed that I got an error during the LoRa.begin(). Have you encountered similar issues? Am So., 14. Jan. 2024 um 16:38 Uhr schrieb Rainer Fritz < ***@***.***>:

…

I try to get the waveshare lora hat running with SX1262 and gps. Took me a little bit to find the right documentation. They provide a LoRaRF version, which works out of the box. I had no time so far to have a look where they modified it. If you want to have a look in the meanwhile here is the link. Scroll down to the bottom of the page: waveshare lorarf library <https://www.waveshare.com/wiki/SX1262_XXXM_LoRaWAN/GNSS_HAT> — Reply to this email directly, view it on GitHub <#20 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BDYPCLTIJJGSOZPJIAX7HGLYOP3XHAVCNFSM6AAAAABAOW2IBWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTQOJQHE4DKNZTGQ> . You are receiving this because you commented.Message ID: ***@***.***>

[rainerfritz]

Before you test it with that library, make sure you uninstall from your primary python environment the lorarf package.
Thats how I did it:

• generate a virtual python environment
• activate it and cd into it
• copy the whole library into the venv directory
• pip install ./sx126x_lorawan_hat_code/python/lora
  But it worked also without installing it on my side

[JulianGa05]

That was it, I still had the old installation, thank you so much!! Now it works! Am Di., 16. Jan. 2024 um 15:19 Uhr schrieb Rainer Fritz < ***@***.***>:

…

Before you test it with that library, make sure you uninstall from your primary python environment the lorarf package. Thats how I did it: - generate a virtual python environment - activate it and cd into it - copy the whole library into the venv directory - pip install ./sx126x_lorawan_hat_code/python/lora But it worked also without installing it on my side — Reply to this email directly, view it on GitHub <#20 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BDYPCLXYW3IOSC6DAFFIOWTYO2EA3AVCNFSM6AAAAABAOW2IBWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTQOJTHA2DAMBSGM> . You are receiving this because you commented.Message ID: ***@***.***>

[longtomin]

Hello,

I got the same module for my Model: Raspberry Pi 4 Model B Rev 1.1.
When I try it, with a venv, I can not install the lib from the zip file of waveshare, e.g. python3 setup.py install in the directory sx126x_lorawan_hat_code/python/lora gives me error like this:
Processing spidev-3.6.tar.gz Writing /tmp/easy_install-tksjunjd/spidev-3.6/setup.cfg Running spidev-3.6/setup.py -q bdist_egg --dist-dir /tmp/easy_install-tksjunjd/spidev-3.6/egg-dist-tmp-ticyfavm /home/thomas/lora/lib/python3.11/site-packages/setuptools/dist.py:775: UserWarning: Usage of dash-separated 'description-file' will not be supported in future versions. Please use the underscore name 'description_file' instead warnings.warn( /home/thomas/lora/lib/python3.11/site-packages/setuptools/command/install.py:34: SetuptoolsDeprecationWarning: setup.py install is deprecated. Use build and pip and other standards-based tools. warnings.warn( Traceback (most recent call last): File "/home/thomas/lora/lib/python3.11/site-packages/setuptools/sandbox.py", line 156, in save_modules yield saved File "/home/thomas/lora/lib/python3.11/site-packages/setuptools/sandbox.py", line 198, in setup_context yield

If I put a sudo in front of the python3, I get these error message:
sudo python3 setup.py install Traceback (most recent call last): File "/home/thomas/lora/sx126x_lorawan_hat_code/python/lora/setup.py", line 1, in <module> import setuptools ModuleNotFoundError: No module named 'setuptools'

The Lib from the ZIP File runs without installing it, but the target is to have a long running (multiple months/years) solution. If I run it the python process, it sometimes stopping without any failure. The data send over LoRa is no longer processed. Making the python script as a serivce was also not successful because of the lacking of the installation, which is preventing the python script to start.

At the end I cloned this git repository and set the pins to the numbers named in the example scripts of the ZIP file.
It will start, but I get strange error messages like Index out of range by returning the buf[0] in SX126x.py line 777 of the read function if single : return buf[0] using the modified (Pins) receiver_continous.py script.

I'm confused, thanks for you help.

[JulianGa05]

Hello longtomin,

I'm by far no expert, I am just a masters student that tried to make a project but my honest opinion is that this piece of hardware (the Raspberry Pi LoRa Hat by waveshare) is some of the biggest garbage I've ever encountered. Nothing works and the documentation is old and shitty. I have now switched to the Pi Pico version and used micropython and everything works perfectly with a suitable library. I have nothing against waveshare, I even use their RP2040 pico board with USB-C, but the LoRa Hat for the Pi 3/Pi4 is a disgrace.
Good luck!

[longtomin]

Hello,

I tried the EByte Module for the RPi4 which has an AirRate and no spreading factor or Bandwidth.
So this was useless. Then I found this hat which is using this library.
What I want to build is a XXL weather station for several places (garden, garage, living room, bath room, .....)
So I got several Heltec Wireless Stick Lite Modules with LoRa on board, this works quit well even with batteries and a monitoring of the battery voltage via LoRa.
What is a mess is, I can not get the RPi4 in a stable mode which can do long running tasks.
I setup the RPi Image without a desptop (not needed).
I tried the installation via pip3 (message: use external vEnv)
Made a vEnv and tried the pip3 install (message: #include python.h missing)
clone the git from here and make a install with changed pins (Message: Tuple out of range)

Is there a step by step installation guide from a brand new installed RPi Image, e.g.

1. Activate SPI over raspi-config (sudo raspi-config) Interface options - SPI - Activate
2. Update the RPi Image sudo apt-get update; sudo apt-get upgrade -y; sudo apt-get dist-upgrade -y; sudo apt-get autoclean -y; sudo apt-get autoremove -y
3. Install Package xyz (needed for build or install)
4. Make a new vEnv where the Python stuff is going to...... or remove/rename the /usr/lib/python3.11/EXTERNALLY-MANAGED file to be able to install directly.
5. Run the example scripts to test with the pin setup, e.g. ......

Thanks & regards

[JulianGa05]

Ah yes, I was talking about my experiences with the hat with the Ebyte module. Sorry, I should have made this clearer. I have no experiences with this hat but I wish you the best of luck in finding a solution!

[longtomin]

If you make a diff on the SX126x.py from the ZIP file and from the repository here, there is not much difference, but never then less it's not working

[rainerfritz]

Are you sure you have this zip downloaded?
Sample Code

I did not install it with the setup.py, I copied the library in the into the venv and installed it then with pip with the install command:
pip install ./sx126x_lorawan_hat_code/python/lora

[longtomin]

Yes, I downloaded the ZIP (sha256sum is 8273f7605d73a7353311282faa69d2334b54af3736d09144bef06a6801aeee14) on both machines, my Ubuntu Laptop and my RPi4.
It is running even without installing it, just unzip and put the Python script into the example/SX126x folder.
So it is running and receives data. The tricky point is now to process the data and do it 24/7. In my case saving the data into a local influxdb to be able to show them and make some calculations. But here it stops. Sometimes the python process crashes sometimes it stops writing data into the DB.
If I setup a local service (https://medium.com/codex/setup-a-python-script-as-a-service-through-systemctl-systemd-f0cc55a42267) it will not start because the influxdb client is missing and I had no chance to bring both (inluxdb-client and LoRaRF) together. Not with a vEnv nor with the renaming of the /usr/lib/python3.11/EXTERNALLY-MANAGED file.
I did also a vEnd and made the pip3 install LoRaRF, but in the base.py the LoRaSPI and LoRaGPIO is missing even in the version 1.4.0.

If you make a diff on the SX126x.py from the ZIP file and from the repository here, there is not much difference, but never then less it's not working.

[longtomin]

Hello,

I found a solution for my Hat with the RadioLib compiled by cmake on the Raspberry with C and the functions of the Lib which are also used on the Arduino.
See: https://github.com/jgromes/RadioLib/tree/master/examples/NonArduino/Raspberry
And for the HAT I used these parameters:
// create a new instance of the HAL class
PiHal* hal = new PiHal(1);
// now we can create the radio module
SX1262 radio = new Module(hal, 21, 16, 18, 20);

[rainerfritz]

Hi longtomin!

Saw this possibility also and tried it out myself but I can't get the lora chip initialised, getting error code -707. I am using SPI channel 0 for my waveshare board which is this one here:

WaveShare Lora Hat

My workflow was to compile radiolib and lgpio and linked in the Cmakeslists.txt to the header files. Did the following:

wget http://abyz.me.uk/lg/lg.zip
unzip lg.zip
cd lg
make
sudo make install

gets installed in: /usr/local/include

Building Radiolib

$ mkdir build/
$ cd build
$ cmake ..
$ sudo make install

gets installed in: /usr/local/include/RadioLib

cd RadioLib-master/examples/NonArduino/Raspberry

Edit CMakeLists.txt

nano CMakeLists.txt

comment out the add_subdirectory line because all header files are compiled as shared library

add:

#link to shared library build before

include_directories("/usr/local/include")
include_directories("/usr/local/include/RadioLib")

How did you get it working?

BR
Rainer

[longtomin]

Hello,

I just installed the 2024-07-04-raspios-bookworm-arm64.img on a SD-Card or USB Stick and assigned a static IP with the eth0 file in /etc/network/interfaces.d direcotry.
Afterwards I made a sudo raspi-config and I activated the SPI with 3 - Interface Options -> 4 SPI (Enable).
The I update the Image with: sudo apt-get update; sudo apt-get upgrade -y; sudo apt-get dist-upgrade -y; sudo apt-get autoclean -y; sudo apt-get autoremove -y
Afterwards I just installed git with sudo apt-get install git
Then I clone the Repositoy with git clone https://github.com/jgromes/RadioLib.git
In the examples/NonArduino/Raspberry I just changed the line 34 of the main.cpp to my parameters, in my case: SX1262 radio = new Module(hal, 21, 16, 18, 20);

And I had to change the radio.begin like this:```

#define FREQUENCY 868.0
#define BANDWIDTH 125.0
#define SPREADING_FACTOR 7
#define TRANSMIT_POWER 0
#define CODING_RATE 5

int state = radio.begin(FREQUENCY, BANDWIDTH, SPREADING_FACTOR, CODING_RATE, 0x12, 10, 8, 0.0, false);

Important is the 0.0 in the radio.begin.

[rainerfritz]

Awesome! Thanks, the 0.0 and false at the end did the trick to not use TCXO and LDO.