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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External Crystal Connection

Posted on June 27, 2016 at 19:40Hello I am developing a evaluation board for STM32F427. I am connecting an external **RTC** IC (DS3231). Do i need to connect an other external oscillator for processor? Because in STM32F407 discovery board they have ...

Low Layer Library, first impressions

Posted on September 18, 2015 at 01:12 As announced by Jasmine in https://my.st.com/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/DispForm.aspx?ID=57714&RootFolder=%2fpublic%2fSTe2ecommunities%2fmcu%2fLists%2fcortex%5fmx%5fstm32%2fHAL%20gpio%20li...

STM32L4 lwIP

Posted on June 25, 2016 at 14:29Hi Everyone,I'm needing to attach a 4G radio (USB/Serial/PPP) to an STM32L475V. I would liketo use the STM32CubeMX Middlewares to enable and configure lwIP; however, lwIPis not a Middlewares option when the selected M...

I2C interrupt mode only works once?

Posted on June 21, 2016 at 14:53I follow the example of the I2C_TwoBoards_ComIT I have I2C host to send data to the STM32L4 board. The I2C slave has below logic HAL_I2C_Slave_Receive_IT(&I2cHandle, (uint8_t *)aRxBuffer, RXBUFFERSIZE); In the HAL_I2...

jiangpen by Associate II
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STM32 reading data from sensor through I2C

Posted on June 15, 2016 at 16:33Hello there! I have a running CPU and a sensor connected through I2C Interface. Everything is set in terms of hardware. Even the CubeMX configurations (startup codes) are implemented. However, I don't know how to gath...

[S] TIM2 - PWM Mode 1 - minimal duty cycle at 5kHz

Posted on June 23, 2016 at 10:55 Hi Guys, I am currently working on a PWM signal of f = 5kHz (T= 200us) with the 32-bit general purposte timer 2. While testing my implementation I am observing a strange behaviour. At the moment I am not sure i...

hof2 by Associate II
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Problems using NVIC_SystemReset () and CAN bus

Posted on June 27, 2016 at 13:05Hi all,I'm developing an application with the stm32f103r8t6 where I've to reset the micro by CAN Bus and sometimes by pressing an external switch.To do that, I've written the following code:  RST_st = GPIO_ReadInputDa...

dsanchez by Associate
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UART only receive one data.

Posted on June 27, 2016 at 04:21Hello, I use STM32F303 Discovery board and try to test UART port.However, although I sent 5 sets of data, but the receiver port just only receive the first data. Does anyone know how to fix this issues?

yang2 by Associate III
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ADC with DMA triggered by software

Posted on June 22, 2016 at 15:32Hi,I would like to trigger the ADC conversion with DMA via a software command. I tried several configurations but I haven't succeed yet. The simplest thing would be to push a button and the ADC starts converting and a...

smrtkai by Senior
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