ladecadence/pyrf95

HopeRF RF95 (and similar LoRa modules) python library using spidev

pyrf95's Issues

Device not detectd

Hi David ,
Maybe you can help me and address me to a solution.
I just got two Dragino Bee board : http://wiki.dragino.com/index.php?title=Lora_BEE
and I'm trying to use them with two RaspberriPI Zero. Connection is standard : SpDev0.0 interrupt GPIO25. When I try to use your library the device is not detected :

pi@swpi ~/pyRF95 $ sudo python
Python 2.7.3 (default, Jun 22 2016, 03:14:32)
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import rf95
>>> lora = rf95.RF95(0, 25)
>>> print lora.init()
False

So I installed RadioHead library (from https://github.com/hallard/RadioHead) to test also with the original library :

pi@swpi ~/RadioHead/examples/raspi/spi_scan $ sudo ./spi_scan
Checking register(0x42) with CS=GPIO06 => Nothing!
Checking register(0x10) with CS=GPIO06 => Nothing!
Checking register(0x42) with CS=GPIO07 => Nothing!
Checking register(0x10) with CS=GPIO07 => Nothing!
Checking register(0x42) with CS=GPIO08 => SX1276 RF95/96 (V=0x12)
Checking register(0x10) with CS=GPIO08 => Nothing!
Checking register(0x42) with CS=GPIO26 => Nothing!
Checking register(0x10) with CS=GPIO26 => Nothing!

so the SX1276 looks to be correctly detected on CS0 and TX RX works fine.

Any idea where the problem could be ?
Thanks
Tony

SPI port 1

Hi and thanks for your work.

I think I will use your library in my Meteo Station project but I need to use SPI port 1 there so I did this modification :

master...ToninoTarsi:master

If you think is useful I can ask for a merge.

Question :

Could MAX_MESSAGE_LEN be increased or it is something related with LoRA ?

Thanks

Error in Example Code (?)

Thank you for the wonderful library.

For some reason when I run the example code ensuring the library is in the
same directory I get the following error

Traceback (most recent call last):
File "./rf95_testing.py", line 17, in
lora.set_modem_config(Bw31_25Cr48Sf512)
NameError: name 'Bw31_25Cr48Sf512' is not defined

SPI speed

@ladecadence
Hello,
First of all thank you for this nice library. If tested and after a small modification, everything works smoothly.
In order to make your code running on my raspberry pi zero, I had to adjust the maximal SPI frequency. In your library it is done only once in the init() method. As it turns out, the spi.spi.max_speed_hz value is reset to its default (125MHz in my case) after spi.close() was called. I added the line
self.spi.max_speed_hz = 488000
after the line
self.spi.open(0, self.cs)
in every spi related method, i.e. spi_write(), spi_read(), spi_write_data() and spi_read_data().

Maybe you can add this changes to your next commit.
Best,
Fabian

BTW, I'm using a RFM95 module