Replies: 5 comments 24 replies
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That doesn't sound right, why in the examples folder? You can take a look at the CI, which installs the library on a Raspberry Pi runner and then performs some tests on it, for example here: https://github.com/jgromes/RadioLib/actions/runs/10334213403/job/28607425921 And of course there's the wiki ;) https://github.com/jgromes/RadioLib/wiki/Porting-to-non-Arduino-Platforms |
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thank you for the patience, i'm not very familiar with the C++ development. I need to integrate the SX1262 Raspberry HAT from Waveshare to make a Raspberry work as LoRaWAN node. The Waveshare do not provide any support, keep pointing me to the Wiki, where only LoRa protocol is provided. So the only siutable library i found in the net is yours. |
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Just to let you know what i've tried to change the pin mapping in the code following the pinout indicated on Waveshare website |
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Why do you expect a .o output? If you install the library as statically linked, it will be
Exactly as the CMakeLists file specifies.
No, the program runs now, so the library is installed correctly and the exectuable is correctly compiled and linked.
First, you have to specify the BUSY pin as well, it will not work without it. Next, you are mixing together pin numbers of the SX126x package and the Raspberry Pi GPIO numbers, which the program expects. I happen to be using the same HAT, so I know for a fact that the correct pin assigment is Look - you seem to missing a lot of basics in terms of writing, building and running C/C++ programs on Linux. You need to read up on libraries, the build process, configuration (via CMake for example) etc. before you jump into the more advanced stuff. This library can do a lot of the heavy lifting for you, you don't have to write the SX1262 and LoRaWAN driver from scratch. But the application that you want and its functionality will not write itself (nor will strangers on the Internet do it, for that matter). ;) |
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Thanks a lot, i will try to get better knowledge on C/C++ programming meanwhile and try the changes you suggested. i didn't apply any changes on PiHal.h, if this is what you mean with something wrong with my HAL. |
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For the sake of completeness as I've seen this misconception only a few times before, here's a longer explanation. The pins on the actual physical chip, the SX1262, are connected to pins on the RPi header which are the ones you need to use - there is no method or concept for a pin on the Pi to know which pin on a chip on a HAT it is connected to. So it would be worth you looking at the schematic so you can see where these pin numbers come from as getting the pins right is something we all struggle with all the time when using a board for the first dozen or so times, all of us! On the schematic you will see that the SX1262 NSS (negative slxxx select) on it's pin 19 has a label on it of CS (chip select) which links it to the header layout (top right) where CS is attached to the physical pin 40. This pin 40 is connected to the main Pi MCU which is from Broadcom, aka BCM, so the code that runs on the Pi needs to reference the pin number for the Pi's MCU which is 21. There are two additional things to know.
Foot notes:
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I see that you have found your way over from the TTN forum. I'd be happy to pickup from there except we still don't know why you want to use a Pi 4/5 and for TTN use there is some hesitation amongst the community with Pi based devices as they can quickly become non-compliant due to timing issues as outlined. Also, that screen shot is a nightmare to read & can't be copied & pasted so please please post as text. It was also not made clear over on TTN which board you are using, so it would be useful to answer that as well please. |
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Given your self-professed lack of C knowledge, there are Python implementations around you could look at - from people on TTN who host them on GitHub. |
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i don't mind at all to use the python code, but i didn't find anything useful for the HW combination i have (i would appreciate if you point me to some resources for python code for this boards combination). i use the raspberry pi to collect some data out from the sensors and do some calculation and was looking to be able to send the data from time to time from Raspberry Pi directly to LoRaWAN network. I bought the Raspberry Pi SX1262 LoRaWAN HAT from Waveshare as it was written to be LoRaWAN complaint. From the TTN forum discussions i found this library as an only valid choice to implement what i want so far. |
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have u ever try it on RPi4B+? |
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ok, thanks for the clarification. Yes, it was just a prototype for the proof of concept and it fails. I'm not stick with the RPi5 or 4, i was just hoping to use then since there performance were greater, I was trying RPi Pico with the Waveshare LoRaWAN HAT and have no problem on developing on it but hey have limited amount of pins to connect sensors., could't imaging all this difficulties changing a board. |
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Looking unlikely. To spin back round to the very start, again, what is it that the Pi does that can't be done on another MCU? Otherwise we are well in to flogging a dead horse territory - if it has to be a Pi and with the options available to you in terms of resources & knowledge, just go RAK! If it's going to be produced in volume, then commission someone to sort it out. |
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Good morning everyone, I would like to give some updates on what has been done: |
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Tx completion is signaled via the IRQ pin. If the signal doesn't arrive within 500% of the expected time-on-air of the packet, RadioLib will return the error you have reported. So two things can be going wrong:
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RPi4B+ and 2W both have the -> Initializing ... failed, code -707 Anyone able to use this HAT successfully? Did try SX1262 radio = new Module(hal,21, 16, 18, 20); mi@localhost:/RadioLib-master/examples/NonArduino/Raspberry $ sudo bash build.sh mi@localhost:/RadioLib-master/examples/NonArduino/Raspberry $ cat /sys/kernel/debug/gpio gpiochip1: GPIOs 570-577, parent: platform/soc:firmware:gpio, raspberrypi-exp-gpio, can sleep: Here is the code: This example shows how to use RadioLib without Arduino. Can be used as a starting point to port RadioLib to any platform! For full API reference, see the GitHub Pages // include the library // include the hardware abstraction layer // create a new instance of the HAL class // now we can create the radio module // the entry point for the program // loop forever } return(0); |
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Fixed by src/modules/SX126x/SX1262.h tcxoVoltage = 0 int16_t begin(float freq = 868.0, float bw = 125.0, uint8_t sf = 9, uint8_t cr = 7, uint8_t syncWord = RADIOLIB_SX126X_SYNC_WORD_PRIVATE, int8_t power = 10, uint16_t preambleLength Length = 8, float tcxoVoltage = 0, bool useRegulatorLDO = false);//tcxoVoltage = 1.6 |
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@philhuen ... or you could read the documentation for error -707 which says: /*!
\brief SX126x failed to execute SPI command.
Often this means that the module is trying to use TCXO while
XTAL is connected (or vice versa). Make sure your crystal setup
(e.g. TCXO reference voltage) matches your hardware by setting
"tcxoVoltage" to 0 when using XTAL module, or to appropriate value
when using TCXO module.
*/
#define RADIOLIB_ERR_SPI_CMD_FAILED (-707)We even have a troublehooting guide entry for this, which shows two different way to select the correct oscillator, none of which requires editing the library source code: https://github.com/jgromes/RadioLib/wiki/Troubleshooting-Guide#sx126xsx128x-incorrect-oscillator |
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i was trying to understand how i can implement the NonArduino code on my Raspberry Pi device. I cloned the repo on RPi and executed $ cmake ..
$ sudo make install in the example folder without any errors. But when i try to execute gcc -o RaspberryPi main.cpp it start to give me a lot of errors for the header files. i copied all the folders from include RadioLib file into the NonArduino folder, but now i'm getting an errors with the "undefined references SX1262, PhysicalLayer etc"
could you please help me!
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