STM32 MCUs Products

How to use the "errno" in STM32F103CBT6?

Hello!I'm using some of the string conversion functions, who's declarations are present in the "stdint.h" file. at present I'm using "strtol" and "strtod". According to the library "the value of the macro ERANGE is stored in errno, If the correct val...

For STM32L1 microcontrollers, can the TS_CAL1, TS_CAL2 temperature calibration parameters be reprogrammed by either application software or a debugger tool?

ULPI clock noise + I/O compensation cell

We are seeing around 400mV of ULPI clock noise (60MHz) on the remaining DAC output with an STM32F427. The data sheet suggests to use the I/O compensation cell when using 100MHz outputs (like all the ULPI interface signals), but information about how ...

stm32f7 uart rx interrupt mode running only once

Hi,we have custom stm32f7 board with debugger connected and we are configuring UART RX in interrupt mode. In main function code is like below and uart rx interrupt is working fine for only once.uint8_t aRxBuffer[15];if(HAL_UART_Receive_IT(&UartHandle...

STM32F103RCT6 UART5 not working

Hi all,I'm using uart5 of stm32f03rct6 with Std lib but it's not working. However, when i use cubemx with HAL, It works perfectly. Anyone can help me check my code :( USART_InitTypeDef USART_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; GPIO_In...

Wakeup from Stop1 and Clock reinitialization is not working correctly on NUCLEO-L476RG

Hello everybody,I try to implement work with the Stop1 mode but sadly my clock reinitialization routine seems to be not working correctly. When I put the MC in Stop1 mode it shall be woken up via LPTIM2 ISR on ARR match. So far this works. But since ...

According to IPC-A-610 revision G, you can have a 30% void in your BGA device. I every pin in the STM32F417IGH6 device was missing 30% of its connection, would the device still work per the datasheet?

IPC-A-610 revision G page 8-93 indicates that you can have a 30% void in your solder ball. We recently had a STM32F417IGH6 device over heat. Upon X-ray, we discovered that about 80% of the solder balls had voids near 30%.

Please tell me how to program an external microcontroller using the nucleo-h743zi2 board

OPAMP4 Mode StandAlone with DAC_OUT1_INP (STM32F303CCT6)

Hiall,Working with the OpAmp4, in the CubeIDE, it seems like it is poossible to connect the DAC_OUT1 to INP, internally. I tested in some ways, and its appears the signal form DAC_OUT1 dont reach INP of the OpAmp.Reading the RM0316, page 112, the tab...

MBEDTLS HANDSHAKE_FAILURE on STM3210C board

Hi, I’m trying to establish TLS communication with my local mosquitto broker.The handshake always fails, the broker does not accept the hello client and I cannot understand why …Below the decoded messages that pass over the network.Messages are captu...