STM32 MCUs Products

On the STM32U5xx, keep ADCx->CCR PRESC = 0, do not use the prescaler.

I'm using the ADC1 and ADC4 with PLL as kernel clock (MSIS 24MHz pll'ed to 32768 Hz watch crystal / 2 x (11 + 2163/8192) / 24) = 5.632 MHz). The ADC1 in combination with the MDF "looses" every second sample. The ADC4 never gets ready. The errata shee...

Nor-flash external loader problem.

Hi,I followed the "How to create an external API loader MOOC" videos and after some struggle I managed to get it working for a board using the H7 with an Infineon S25FL127 memory.When I tried to do the same using a board with the G4 and with the same...

SDRAM : Some data not writting correctly

I am working on STM32H745BIT6 with W9812G6KH-6 SDRAM 16bit data bus. I have initialised the SDRAM and HAL driver seems to be returning HAL_OK so seems it is initialised properly.I write incremental data and read back. Observed some of the data not ge...

Step-by-step instruction how to compile stm32 programm without IDE

Dear collegues, could you share the step-by-step instruction how to compile Stm32 program without IDE?

Dear Sir,I am using STM32L452RET6 for the SD card interface in SDIO with BUS_WIDE_4B mode in interrupt mode.You can find attached .ioc file for the reference. I am writing 512 bytes using f_write function then it takes time to write approx 13mili sec.

Need help with example code. I'm trying to do simultaneous ADC sampling on 3 analog inputs at 80KHz for 80 samples. Like to kickoff sampling on trigger from analog comparator. DMA samples to buffer and interrupt when buffer is full.

Thinking STM32G7474xx wound be a good fit but not sure. Need M4 CPU with FPU and low power modes. Like to have MCU in low power mode until buffer full. Any help would be greatly appreciated! I am new to ST MCU tools and not sure even where to begin....

which JSON library is good for generating and parsing for ST Micro controllers

Hello everyone i am building project which is use to monitor the room temperature and humidity and CO2 level but i want send this data into JSON format to web server but i didn't find the any library that generate and parse data for stm32 micro cont...

STM32L476 wakeup flag not set when exit from shutdown after JLink removed

I have a project that makes use of the two external wakeup pins, and need to know which pin woke up the device. After flashing, with a JLink, the board can enter/exit shutdown, and will set the correct wakeup flag in the PWR_SR1 register.If I power c...

Can I use DMA1 in Memory-to-peripheral mode to transfer a data over USART2?

I'm lerning Cortex-M7 (stm32f722) and I don't fully understand how DMA1 works. On the one side DMA1 not connected with AHB therefore PORTs and SRAM not available. On the other side in datasheet didn't type that Peripheral-to-memory and Memory-to-peri...

How do I connect the STM32blue pill to two independent power sources?

The setup currently is a connection to a lithium cell and the other is to a solar charger output.