STM32 MCUs Products

Undesired Square Wave on Pin configured as GPIO_Output used for SPI Slave Select

I have a STM32G0B0KET6. I have configured Pin A4 as a GPIO Output. However, I see a 506.000 Hz Square Wave instead of it being high. It sometimes works correctly as a slave select. At one point the line goes to 0V. If I reset the controller after thi...

What is the process to use the ADC on STM32F745 to wake up the micro from Sleep?

Want to use a ADC threshold on STM32F745 to wakeup the micro from Sleep. Table 14 (Features over all modes) in the reference manual, indicates that this support is O (optional i.e. Off by default but can be turned on by software). Can someone please ...

Hi everyone, I want to interface PCF8575 with a custom keypad of size 8x8. Is there any library or support available of PCF8575? Also how to define GPIO's of the PCF8575 as input rows and output columns?

How to use UpdateCharData[] and Custom_App_Context_t

I am new to microcontroller development and trying to implement my first custom ble service.I looked at a few other examples that often use the _App_Context_t struct to store data before passing it to the character update method.Example:Custom_STM_Ap...

I use the STM32F429 for my new products, and the Crystal for the RTC stops running when power goes away. I have a battery on it to run RTC, so I can I get the 32.768kHz crystal on OSC32 to run using the battery on Vbat??

For a three phase system, I want to stop the pwm of channel 1 using comparator 1, channel 2 using comparator 2, channel 3 using comparator 3. The current of each leg is being fed to concerned comparator. I can't find any method to do that.

Three comparators are fed with three currents of each leg. we want to stop the PWM of concerned leg whenever the current goes beyond the set value of DAC.

SDMMC2 on STM32F767 (pyboard D series) / f_mount returns FR_NOT_READY

Hi, I am trying to setup SDMMC2 interface with an SD card. I am using the pyboard d series therefore I am using the SWDIO and SWDCLK pins. The schematic of the board is here (https://micropython.org/resources/PYBD_SFxW_schematics.pdf).According to th...

The PLLon and PLLRdy in the RC register of THE RCC based on STM32H750 are out of sync

Under normal circumstances, THE PLLRdy of RCC is controlled by hardware. When PLLON is enabled by software, PLLRdy is set by hardware. When the software does not enable PLLON, PLRdy is cleared by the hardware. I now have a device with a Farad capacit...

Hi all, i would like to make a my own bare metal code for stm32f401ccu. Here i have given my code. But it's not showing correct clock frequency. Anyone could you pls check it for anything missed or etc...

#include "stm32f4xx.h"#define PLLM 25#define PLLN 320#define PLLP 1//divide 4int clock_80MHz_Ex_pll();int pinMode();void InitTIM2();void Delay_us();void Delay_ms(int x);int clock_80MHz_Ex_pll(){RCC->CR|=RCC_CR_HSEON;//External Crystal Oscillatorwhile...