Internet of Things Stack Exchange
Internet of Things Stack Exchange

Questions tagged [stm32]

For questions regarding IoT devices that are built using STM32 32-bit ARM Cortex MCUs manufactured by STMicroelectronics.

12 questions
17
votes
2 answers

How can I implement MQTT on an STM32F030K6T6?

The controller in question is an STM32F030K6T6, which has an ARM® 32-bit Cortex® -M0 low power core, 32 kB Flash memory and 4 kB SRAM. It interfaces an SIM808 for Internet connectivity. The resources are quite limited regarding the memory. Is it…
Bence Kaulics
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12
votes
1 answer

Keil uVision MDK-Lite, STM32F072B-Discovery board and flash API

I'm using MDK-Lite Version 5.23 with a STMicroelectronics STM32F072B-Disco "Discovery" board and I am trying to use the Flash Example provided by the Discovery samples. I've used this board and toolchain for other examples and I have coded some SPI…
netskink
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10
votes
2 answers

AWS IoT implementation on a low end controller like Atmega328, nrf51822?

I have been using AWS IoT implemented in a RPi for a while. I was wondering if I could use a controller like Atmega328 or some NRF based controllers or STM32 to publish and subscribe to AWS IoT MQTT broker ? I did a bit of research on that and I'm…
A.Rajib Kumar Gupta
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8
votes
3 answers

Is a simple UDP messaging a good idea for IoT Sensor?

I am working with NB-IoT Modem - Quectel BC95 that will be used in a simple IoT sensor that will periodically (Once per hour) send measurements to our server. Because of the restriction in place by the service operator, I can't use the hardware…
Oli Řeháček
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3
votes
2 answers

How secure connection between modem and microchip

My board has a separate Quectel MC66 modem and STM32 microchip. The communication between modem and microchip is AT Commands. If a hacker connected a wire between modem and microchip, he could have access to transferred data between these two…
behroozbc
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3
votes
0 answers

How we can interface LoRa(RFM96W) with STM32F030 controller?

I have tested my RF96W LoRa boards with the Lolin Boards, it works fine. However when I interface these Lora boards with a stm32f030r8t6 based controller, I don't receive any data, although I have tried to keep the SPI configuration according to…
Shubhanshu Rastogi
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2
votes
1 answer

Read data from STM32 using UART ESP32 micropython \x00 error?

I am using a LOLIN32 lite (ESP32) to read data sent from a STM32F103 (black pill). The ESP32 is using micropython and the STM32 is programmed using CubeMX + Truestudio. When calling the uart.read() or uart.readline() in micropython I get the data…
Gabriel
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1
vote
1 answer

STM32L475 X-CUBE-GCP sample application not correctly signed by trusted CA

I am trying to make X-CUBE-GCP sample application SDK working. I am not able to connect to GCP cloud because of repetitive error - "The certificate is not correctly signed by the trusted CA". I tried to check the certificate validity using openssl…
Prasan Dutt
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1
vote
1 answer

Has any one developed M-Bus protocol on STM controller?

M-Bus is a building management side protocol which helps to communicate with the controller to get the available parameter values like current, voltage, power etc. I have to develop an architecture which helps to get the data from Meters using the…
Shubhanshu Rastogi
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1
vote
0 answers

Integrating STM32 device with smart lock via BLE

I am using a Particle Boron to integrate with a Smart lock but I am not being able to do it. I'm using Particle's BLE interface to connect to Bluetooth and start sending messages to the lock, and a callback to 'listen' for the lock's response, but I…
Mauricio
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1
vote
1 answer

Suggestion between bluetooth and wifi for a simple sensor reading application

So I have a simple application that involves reading the input over terminal via UART, and then responding accordingly, be it toggling an LED or outputting a sensor reading over I2C. As a step up, I have been thinking about incorporating some…
xyf
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1
vote
0 answers

Is it possible to send data to AMQP server using AT-Command on ESP8266 Wi-Fi module?

I'm currently working on an IoT project which I have an STM32F0 connected to the ESP8266 Wi-Fi module. My goal is to publish data to an AMQP server. Currently, I'm trying to connect to an AMQP server(cloudAMQP) by controlling the ESP8266 using…
copsterr
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