STM32 MCUs products

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New possibilities for the ultra-low power segment!

STM32U0 is the first Cortex-M0+ with a static consumption of only 160 nA in standby mode with RTC (Real-Time Clock) and 16 nA in shutdown. It also achieves 118 points in CoreMark and targets SESIP level 3 and PSA level 1 focusing on firmware code pro...

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RCC HSE CONFIG

Posted on July 17, 2017 at 07:01heyI'm use stm32f013cbtx and 8MHz crystal connect to HSE And use standard peripherals library with Keil v5.How can i config micro-controller for 72 MHz clock(with Cmsis)?is it possible?Thanks

Problem receiving data from CC2540

Posted on July 13, 2017 at 18:28Hi,I have an STM32 and am trying to receive a single byte of data from a CC2540 over UART. I've verified that the data transmission from the CC2540 is working properly (I can receive the data in a serial terminal) but...

How to calculate I2C SCL Speed

Posted on July 14, 2017 at 06:27I'm trying to get a 100 or 400 kHz rate on I2C3 SCL to interface with a Sparkfun IMU breakout board. I was wondering what value I should set 'TIMING' to in order to achieve this rate with an STM32L476RG Nucleo board. ...

RTC can't work because PLL already use

Posted on July 17, 2017 at 07:46Dear Sir:I had reference the PWR_STANDBY_RTC sample code form STM32Cube_FW_L4_V1.8.0This sample code are work well and wake up about 30 second,but after move to my code get return fail atif(HAL_RCC_OscConfig(&RCC_OscI...

Resolved! HAL I2C Communication Problem

Posted on July 14, 2017 at 11:52Dear Sir/Madam,I am working on STM32F405 mcu.I developed my code on cubemx and HAL drivers.I want to interface microchip adc 'MCP3428' via HAL I2C drivers but unfortunately i was failed.Anybody of you please help me t...

HAL Documentation PDF Table of Contents

Posted on July 14, 2017 at 23:26Would it be possible to make the table of contents in the HAL Documentation PDFs more useful? Currently it looks like this:It would be way more useful if section 49.2 had headings in the table of contents for each fun...

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Confused on TIM_SelectCCDMA

Posted on July 14, 2017 at 15:19I want to use Timer Capture event to generate DMA requests, how TIM_SelectCCDMA should be called?TIM_SelectCCDMA(TIMx, ENABLE)?This will set CCDS bit, but according the reference manual for STM32F303, bit CCDS should ...

USB HID keyboard

Posted on July 17, 2017 at 12:48How to turn On/Off leds on keyboard conected by usb/hid interface? Keyboard is working in BOOT mode

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