STM32 MCUs Products
Ask questions, find answers, and share insights on STM32 products and their technical features.
Forum Posts
STM32H723 TIM PWM first pulse wrong
Hi all,I am facing a very weird issue with PWM on my STM32H723.I am generating a very fast PWM with TIM3 (TIMx_ARR = 10, TIMx_CCRx = 5, Timer Clk 275 MHz). However, the very first pulse is clearly way too long:Does anyone have an Idea where this come...
DMAMUX experiment on stm32H7 with adc's and Gpio's
In one application I am currently developing I have a single pin for an adc input and an analog external mux(4051) on three pins that changes which of my actual 8 adc's is wired on this pin.I would like to iterate over the 8 different mux values and ...
Resolved! Where are the Apple HomeKit solutions? And will there be a HomeKit SDK/Lib?
Ahoy ST,1) I read a press release ( https://www.st.com/content/st_com/en/about/media-center/press-item.html/n3798.html ) that says there are Apple HomeKit solutions available, but I cannot find them. Where are they?2) NXP and Microchip advertise Appl...
Resolved! Can the difference between stm32l152c8t6 and stm32l152c8t6a be shared?
I read the datasheet, a = device generation a, but I don't know what the difference is. Can you explain it in detail?
We would like to upgrade our PCB with a more recent STM32 chip. Could you please recommend us which chip of the STM32 family is compatible or closer to the old ST10F269?
Dear ST Community,We have an old PCB with a ST10F269 chip on it.We would like to upgrade our PCB with a more recent STM32 chip.Could you please recommend us which chip of the STM32 family is compatible or closer to the old ST10F269? We want to apply ...
Resolved! DFSDM and external Sigma Delta Modulator
Hi,I currently have a STM32L4R9VI (that contains the DFSDM + DMA) and I am planning to sample an IF signal ( up to 10 MHz frequency) using an external Sigma Delta Modulator AMC1305M05 (20Msps - 20 MHz frequency - 16 bits resolution). I am not an expe...
Can't read mpu6050 via I2C1
HelloI can read mpu6050 via I2c1 in stm32F4Disco but I cant read mpu6050 in STM32F746 Touchgfx.All values returns 0.This is my reading code. it is working in 32F4DISCO:#define MPU6050_ADDR 0xD0 #define SMPLRT_DIV_REG 0x19 #define GYRO_CONFIG_REG...
Resolved! Getting Junk data on I2C LCD 16x2 display while interfacing with stm32f401re Micro controller . please help
Interfaced i2c_lcd with stm32f401re and try to program without any library .but getting junk data always,tried changing delay but same. void I2C_WriteData(uint32_t data){ uint8_t data1=0,data2=0,data3=0,data4=0; data1= data & 0x000000ff; data2= ...
I2C1 is not working in STM32 after initialization of all Clocks(CCR ,TRISE )?Please Help.
Hi i am unable to see SCL,SDA signals in logic analyser. Connected Pullup resistors to Scl,Sda pins. Interfaced with PCF8574 IC (I/O Expander) ,Hardware Connections are fine but i am not getting even clock(scl) in STM32F401RE#include<main.h>#include<...
