Send LoRa packet with AT command - b-l072z-lrwan1
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‎2017-06-12 06:37 AM
Hello,
I am trying to use LoRa connectivity with the brand new b-l072z-lrwan1 discovery board. The End Node project works perfectly but I have an issue with the AT Slave project. When I try to send LoRa packet to my Multitech gateway, this one never receive the packet and I cannot use AT command with the disco board anymore. I can only do a hardware reset of the board.
As you can see on my screenshot, the Join process has been done correctly. After the AT+SEND command I never receive a status like OK or AT ERROR.
Are you able to help me ?
Thank you !
Aaron
#b-l072z-lrwan1 #at_slave #lora- Labels:
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LoRa
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‎2017-08-14 03:03 PM
I am having this same issue. It appears to be related to the tiny_sscanf, but I can't seem to figure out why?
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‎2017-08-14 04:54 PM
Try rebuilding the firmware using the v1.1.1 release of the LRWAN software
http://www.st.com/en/embedded-software/i-cube-lrwan.html
Up vote any posts that you find helpful, it shows what's working..
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‎2017-08-15 03:12 AM
I have exactly the same problem in the AT_Slave software that I built.
I was using LRWAN software v1.1.1. I only added the 'REGION_US915' compiler switch without modifying anything of the code.
If I use the binary provided in this thread:
https://community.st.com/community/stm32-community/blog/2017/04/05/lora-discovery-kit
(
LoraDisco_ATSlave_US915.hex),
I can send data without this stopping issue.
Any way to solve it?
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‎2017-08-15 09:02 AM
Here is a quick build of AT_Slave V1.1.1 US915
________________ Attachments : LoraDisco_ATSlave_US915_V111.hex.zip : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006HySN&d=%2Fa%2F0X0000000b8n%2F88fmzhPFPd725.0hxoa27SXLpVu4ox7Wlsn2VuExdjU&asPdf=falseUp vote any posts that you find helpful, it shows what's working..
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‎2017-08-15 07:33 PM
Like others have posted we need customization, we also use US_915_HYBRID and require channel masks (hence our custom build).
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‎2017-08-15 09:21 PM
Thanks Clive One. Your build works for me. I can send the data and receive response.
But I also need to figure out our cause as we need to customize the firmware and build ourselves.
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‎2017-08-16 06:23 PM
Let's wind that back a bit, if you can't build the stock version into a functional firmware then you need to look at the tools you're using, because unless these work any customization is likely to similarly fail.
Up vote any posts that you find helpful, it shows what's working..
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‎2017-08-16 06:25 PM
If the stock build doesn't work you should perhaps focus on that first.
Up vote any posts that you find helpful, it shows what's working..
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‎2017-08-16 06:35 PM
I used the provided project and the recommended eclipse based tools. It builds just fine. Just send doesn't work. It hangs in tiny_sscanf. I worked around it and doing my own build with my own tool chain that is now working fine.