STM32 MCUs Wireless

Hi, I trying to use an STM21L073 Nucleo-64 with my custom board LoRa (SX1261). I use your code I CUBE LRWAN version 1.2.1. At this time I can see JOIN procedure start. The node send a request JOIN to our GW and GW send a Accept JOIN. But in Tera Term Terminal each time node send a JOIN request, I have this message "PHY txTimeOut". The node never send a message to accept JOIN from GW. (GW work with a different node). Do you have some advice ? Edouard

I am using LORAWAN and after I joined as OTA, how to join as ABP using the generated season keys which generated after joined OTA?I read before thatits better first to join as OTA then join as ABP using the generated keys.Also, how to change the TX data rate after joined the network?

I am using LORAWAN and after I joined as OTA, how to join as ABP using the generated season keys which generated after joined OTA? I read before thatits better first to join as OTA then join as ABP using the generated keys. Also, how to change the TX data rate after joined the network?

Posted on January 09, 2018 at 11:19Hi everyone, I'm currently working with my team on a GSM/LoRa gateway with the B-L072Z-LRWAN1 board and we are facing some trouble on the LoRa part. Indeed we figured out that we needed to import the LoRa library from STM32CubeExpansion in our project but when we do, there are a lot of errors appearing due to unresolved includes (for example 'hw_conf.h' or 'debug.h') and we did not manage to find those files or to fix these issues, is there someone facing the same issue or with a solution? It would be much appreciated#stm32cubeexpansion #include-error #b-l072z-lrwan1

Hi!I have used the B-L072Z-LRWAN1 with the module CMWX1ZZABZ-091. I used the software from I-CUBE-LRWAN and it worked correctly. But now I am trying to test the module CMWX1ZZABZ-078 with the same software (the example of AT_slave). The communication via UART works fine but the RF seems to not work. Looking at the power consumption, it doesn't transmit or receive anything because the power consumption doesn't change. I thought it could be a drivers problem because -091 uses STM32L072 while -078 uses STM32L082, but I can't find the correct code for the -078. Could you please tell me how to program correctly the -078? Is there any software already for this module?Thank in advance!Marta

Quick Response is Appreciated

Hi,I'm flashing the CMWX1ZZABZ LoRa module (STM32L082) for the first time. I have JLink ARM Lite debugger. I connected to SWDIO, SWCLK, nRST and GND pins to the JLink debugger. But when I try to flash/erase the memory, it a message saying "***JLink Error: STM32: Connecting to CPU via connect under reset failed.". I pulled down the BOOT0 pin.Regards,Nishanth S

Hi STM,I am relatively new to the embedded (I have decent C++ background). So my question revolves around start exploring STM. My idea is to start with Nucleo board and some Wi-Fi expansion board. Can you, please advice what would proper combination of those two?Regards,Aleksandar

HAL_UART_Receive(&huart2, (uint8_t*)msgToTransmit, MESSAGE_SIZE, HAL_MAX_DELAY);   int index = 0; for (index = 0; index < MESSAGE_SIZE; index++) { PRINTF("\n\rmsg to transmit is hex: %x", msgToTransmit[index]); PRINTF("\n\rmsg to transmit is char: %c", msgToTransmit[index]);   }I am developing an application to send data using LoRa. I use an STM32 L073RZ (with LoRa shield) connected to a Raspberry Pi via USB. Everything works fine: there is a Python script that every 10 minutes sends data to the STM32 board, and then the board sends the LoRa message. I would like now to "analyze" the message before sending. I tried to print on terminal the message that I send and:if I send: abcdefghthe result of PRINTF() with hex is: index = 0 --> 64636261index = 1 --> 68676665the result of PRINTF() with char is:index = 0 --> aindex = 1 --> eAny suggestion/idea?

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Hi,I have STM32L4A6VGTx with SPWF04SA wifi module on it. I want to send sensor data to Amazon IoT. I can see AT+S.TLSCERT commands for the wifi module. I have created a thing on Amazon IoT core and I have downloaded certificiates (myrootCA1.pem, mycertificate.pem.crt, myprivate.pem.key.I am not sure which AT commands should I use to connect with Amazon IoT?Do I need to copy all certificates in my code?After Amazon IoT connection, I want to send data using MQTT AT commands ...Thanks,Mehul #amazon #SPWF04SA #iot #mqtt

Hello, when will the STM32WB55CB and the STM32WB nucleoboards be released? Is there any approximate timeline?

Hello ,I use this demo board B-L072Z-LRWAN1 with the soft End Node I-CUBE-LRWAN 1.2.0But I do not understand why I cant send the messagei disable all senser and i try to send with " LORA_send( &AppData, LORAWAN_DEFAULT_CONFIRM_MSG_STATE); "in static void Send( void )Thank you. 

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I've trying to establish a bi direction communication b/w my end-node STM32L073RZ and SX1276 and TTN. I have successfully transmitted sensor data from my end node but have no luck in receiving from TTN. I have tried changing Rx window delay, window time and many other thing but every time i get RxTimeOut.

Hello all,My problem is almost same as https://community.st.com/s/question/0D50X00009fEWGjSAO/send-a-simple-message-like-hello-with-lorawan-cube-to-ttnBut in my case i carefully converted the code of STM32L476 to STM32L432KC with made-up necessary changes.I'm running my application in ABP mode with Device Address, Application Session key and Network Session key getting from my server.Now it continuously prints the log as in attached snap.Is anyone have idea about this problem or somewhere I made mistake to configure device parameters or something else.Little help will be appreciated.Thanks is advance!Correct me if somewhere I'm wrong in this.

Please recommend microcontroller with reference of below inputs

Only activation messages are showing in ttn application but in gateway we are able to see join,up-link messages.this happens only when i use OTAA.In ABP it works fine.I am using Lora Stack provided by STMicroelectronics.Gateway=Laird SentriusEnd Device = B-L072Z-LRWAN1

This part is not available in any retail market (like Digikey, Mouser,....) How should we get the samples? We are planning to use in our NPI, kindly help.

​Through the BLE, does the STM32WB to harvest it's own energy? or how to integrate an energy harvester base on the RF communication for this component?

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Posted on October 11, 2017 at 11:08Hi everybody,I am working with the evaluation board B-L072Z-LRWAN1 with I-CUBE-LRWAN embedded software. I am trying to customize the received frame from the LoRaWAN network. I am working in France 868 MHz with the Objenious (Boygues Telecom) network with SPOT backend.I flashed my Murata module with the AT_Slave project and I am trying to display the received message with the AT commands: AT+RECV=? ou AT+RECVB=?But always I have a display of 0: OK. I debugged the code and I noticed that the receiving port is always set on 0. And the buffer of the downlink frame is always set on zeros.I followed the Application Notes in this link http://www.st.com/content/ccc/resource/technical/document/application_note/group0/db/8c/4f/5a/95/9e/40/69/DM00346311/files/DM00346311.pdf/jcr:content/translations/en.DM00346311.pdf  which shows examples of AT commands. You find in the pages 18 and 19 the definition of the AT+RECV and AT+RECVB commands and the ex

I am using STM32F429I interface ESP8266 through AT Command, I wanna send data to website by "POST" and "GET" method. I receive send ok response but database no change and i don't receive any data back . Anyone help me please

I am using B-L072CZ and able to to send the packets when power is giving through the USB but i want it to work with the battery connection.I tried with the battery but its not working , after connected to battery the LEDs are glowing but data isnt transferring.Please help me through this.Thanks and regards,Umesh

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