STM32 MCUs Products

Resolved! like to know about __disable_irq() effect on systick

systick was getting disabled with __disable_irq() . is it possible to use __disable_irq() without causing any effect to systick?

How to get started with bluetooth?

Hi, I've had an STM32F411 development board for sometime and have done hobby projects with practically every peripheral on the board (audio output, mic, accelerometer, gyroscope, etc) programming both with and without the HAL. I'm now interested in ...

Communicating between STM32F4 and energy meter using mod bus-RTU.

we are trying to read the line voltage register in the energy meter(em6400ng) using mod bus RTU over RS-485 protocol. we are assembling the packet in an array and sending it to the energy meter using DMA. also we are receiving the packet in a buffer...

Resolved! STM32F0: updating RTC calendar after wake-up from standby fails.

Hi all,I'm faced with a strange issue: updating the RTC calendar does not seem to be possible after a wake-up from standby mode.I have a piece of code that updates the RTC calendar (date and time are uint32_t):// rtc disable write protection RTC->...

Resolved! Do RAM may have old data after energized

Hi everyone ,We are using our custom bootloader firmware to update our main firmware.To do that we set a flag at a specific location at RAM and reset the MCU.The flag size is 1 byte.At the bootloader firmware read the data from RAM and if this data m...

Resolved! spi clock configuration

Hello, I am using nucleo stm32f429zi. I want to add MCP3304 SPI with my controller. It works properly, but my spi clock is 1.325MHz, which means my channel sample rate will be 1.325MHz/21=63095Hz (sample rate for 4 differential channels). so each ch...

ST chip containing WIFI?

Is there any 32-bit ST microcontroller that contain WiFi in it?

HI I want to derive 2 Ws-2812b Led with STM32 and i want to derive using normal gpio pin without timer. Frequency is 8MHZ

What is Radc for STM32H743?

DS12110 Rev 5, notes for Figure 40. says it should be in Table 85 but it isn't. Rain and Cadc are in the Table 85.

STM32 GPIO external event vs interrupt.

i want to execute few lines of code on both edge of input pin i know about interrupt but what is external event ?

STM32 MCUs Products

Forum Posts

Resolved! like to know about __disable_irq() effect on systick

How to get started with bluetooth?

Communicating between STM32F4 and energy meter using mod bus-RTU.

Resolved! STM32F0: updating RTC calendar after wake-up from standby fails.

Resolved! Do RAM may have old data after energized

Resolved! spi clock configuration

ST chip containing WIFI?

HI I want to derive 2 Ws-2812b Led with STM32 and i want to derive using normal gpio pin without timer. Frequency is 8MHZ

What is Radc for STM32H743?

STM32 GPIO external event vs interrupt.

STM32L433RCT VDD12 pins - what should I do with th...

What harms STM32

EMMC Compatibility with STM32H757XIH6

X-NUCLEO-GFX01M2 and STM32 NUCLEO-H533RE

Configure SHT40 to Work as the External Sensor of ...

STM32L433RCT VDDUSB and BOOt0 pin for firmware upd...