STM32 MCUs Products

How to handle asynchronous (data size of 240000 bytes) data from MQTT in STM32

I am using STM32L475 dev board and SIM7600 4g module. I have implemented MQTT communication in this project. I can successfully connect to MQTT broker and also able to receive the data. But the problem is size of data is large (240000 bytes ie 234.37...

Problems with I2C register code (STM32G0x1)

I am attempting to write register level code to control the I2C peripheral in an STM32G0x1.My read function is failing because the RXNE bit is never getting set. I believe I have implemented the state machine described in RM0444 (p. 958). Is there ...

About the STPM32 metering chip. In your document UM2092 you refer to a source file called handler_metrology.c, but in the firmware package (en.stsw-stpm002.zip) there is no such file. I also don't find it on Github.

I have made a target board using STM32G484VE . I am using 11 ADC pins spread across ADC1 - ADC5. I have introduced a 3.3V Zener BZT52-B3V3 as a protection at all ADC inputs, but all the ADC voltages read 0.6V less from the actual voltage ? Any reason ?

I have made a target board using STM32G484VE . I am using 11 ADC pins spread across ADC1 - ADC5. I have introduced a 3.3V Zener BZT52-B3V3 as a protection at all ADC inputs, but all the ADC voltages read 0.6V less from the actual voltage ? Any reason...

[AN2834] Is the LM235 a temperature sensor or voltage reference? (Errata?)

​Hi,​Maybe the TL431 is a voltage reference.

STM32H7 stopping a SPI TX transmission via DMA with a external GPIO trigger

Hi ST community,​I'm using a WiFi module, which receives data with SPI. The WiFi module has NORX pin, which indicates whether the module can accept the data or not. The data bits sent when NORX is set to high are discarded. So, when transmitting a SP...

Issues in Serial communication

Hello, I am new to the community and to the project I am working on.. I am using a STM32 blue pill board and programming it with a simple code of serial communication :void setup() {Serial1.begin(9600);pinMode(PC13,OUTPUT);}void loop() {Serial1.print...

Stm32h747i Disco

There appears to be very long lead times for this product. Any reason and is there any chance it will get better?​

HOW TO DO BASIC MASTER SEND DATA TO SLAVE IN I2C FOR STM32F302R8

I need some guide on how to do the basic master send data to the slave for i2c. The question is, I need to send some data to the slave with address 0x68. Unfortunately, my start condition could not be SET and I do not know why.here is the flow chart ...

Need to migration for changing from stm32h745ii to stm32h755ii?

Hi.I want to konw what changing to use from stm32h745ii to stm32h755ii in same product line.Are there changing firmware, ..., and start-up code? Thank you.