STM32 MCUs Products

Communication with interrupt between 2 cores

Hello,I am trying to communicate with interrupt between the Cortex M4 and M7. I tested the HSEM but, maybe I'm wrong, the semaphore locks a process when it waits for it.Thanks for you help

what happen if I call more than once HAL_UART_Receive_DMA API before Rxcpltcallback of first call?

I am using STM32F407VG. I am transmitting data from PC to STM32 using uart. I wrote the code to receive 100 bytes. Firstly I call the HAL_UART_Receive_DMA more than once and then I sent the data from PC to STM32.I observed it receives only 100 byte...

Timer for generating 1us tick

I'm using STM32F108RG on 48MHz clock configuration.I need to generate a 1 micrososeconds timer tick on it, for driving an output pin interfaced with a 3rd party device. Using PWM is not an option available.I tried configuring TIM3 with following para...

stm32 IAP Binary problem

I am getting this error while debugging "Break at address "0x20004000" with no debug information available, or outside of program code". I am attaching main and linker file. How to solve this? Thanks in advance..

STM32L0 ADC voltage calculations

I have been trying to calculate voltage of the battery connected to ADC_IN7 of STM32L010K8. I have connected a battery to it via voltage divider. When I read the ADC I get raw values of 1948 for applied voltage of 3.7V. After going through the datash...

How to configure usart software fow control (XON/XOFF) in stm32f030 microcontroller?

SPI DMA Stream Seems to Eventually Freeze

Hi,I'm using CubeMX generated HAL drivers to use SPI in DMA mode. In my particular situation, we are sending a small amount of data (3 bytes) very often over the SPI interface. The data transmission works fine most of the time, but sometimes (as litt...

Hello everyone, I am using stm32f207zg with usb ttl converter with ftdi chip. I want use the usart1 for communication with PA9 e PA10 pins as TX and RX of usart1. I use as virtual terminal, termite, and when i play the program, appear weird characters.

#define RCC_CFGR *((long*)0x40023808)#define RCC_CR *((long*)0x40023800)#define RCC_AHB1ENR *((long*)0x40023830)#define GPIOC_ODR *((long*)0x40020814)#define GPIOA_MODER *((long*)0x40020000)#define GPIOA_OTYPER *((long*)0x40020004)#define GPIOA_AFRL ...