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Greetings,During the power-on and power-off processes of the STM32F407 chip, the GPIO used as the DAC output will be pulled high for 8ms. The goal is that the GPIO should remain low when there is no DAC output. Adding an external pull-down resistor h...
I am trying to drive a lc resonator from a h bridge. Frequency of the resonator changes when inductor is loaded. TIM15 creates the complimentary PWM for the H bridge. I need TIM2 to read the new frequency of the resonator so i can adjust the PWM freq...
SPI communication using DMA on the STM32H743.We have created a program for SPI communication using DMA, The first send/receive with HAL_SPI_TransmitReceive_DMA is successful.However, when the exact same process is executed afterwards, all received va...
I am dealing with an I2C lockup issue where the I2C bus is locked up periodically and I need to toggle the SCL pin to free up the bus. To test my theory and make sure that the fix works I just used an osDelay(1) call. I know this is a 1ms delay but...
Application note AN5361 "Setting up with ST-LINK GDB server" says "Set the Cortex®-M7 core running so that the HSEM semaphore is released and Cortex®-M4 wakes up from Stop mode" and this post implies that it's "HSEM 0" which I'm assuming is HSEM chan...
Greetings,We have implemented a USB peripheral on the STM32G474RE discovery board using code that runs properly on the STM32WB and STM32F0 parts. On the G474, the USB setup completes, but the USB bus quickly suspends after the completion of the conf...
I am trying to get my STM32F446RE (using STM32CubeIde) into USB DFU mode via firmware rather than using the RST and BOOT0 inputs which are going to switches on the board. I know this is doable but for some reason it is not working for mewhenever I go...
Hello,I have a H7 design with multiple UART/USART used to communicate via RS485 drivers (XR3072).I have programmed kind of loopback test by connecting the A/B signals of two RS485 busses.For this I use 2 DMA channels for each UART, one for RX and one...
I am using an STM32G4 microcontroller with UCPD and the USBPD middleware. I was following this tutorial (same as AN5418 https://www.st.com/resource/en/application_note/dm00663511-how-to-build-a-simple-usbpd-sink-application-with-stm32cubemx-stmicroel...
I’m working with an STM32-based system where the RTC is running on the internal LSI. My goal is to maintain reasonable time accuracy (within a few seconds) while periodically receiving the correct world time over an external communication interface.T...
