STM32 MCUs Products

How do I clear my output buffer?

I'm using an STM32F103C8T6 "Blue Pill" connected to Ublox module using UART. It just a simple operation of receiving data and then print them to serial monitor using CDC_Transmit()HAL_UART_Receive(&huart1, receivedData, sizeof receivedData, HAL_MAX_D...

I'm using a STM32F407ZG. When we use printf, it goes where?

interrupt call back response time

Using a stm32h7From what I gather this 1.5 responce tie is normal. Is there a trick or two I can use to speed this up? Can I move the callback location in memory? I'd like to get this much closer to a a few ticks.

Using ST BLE TOOLBOX, I am able to use STM32_WPAN Notify, I am able to send data to the phone in hex, what would be the easiest way to display the data on the phone as a char?

STM32G474: Processor hanging when NVIC_Enable Debugger-Timer IRQ.

Hello,currently I'm transferring from a Nucleo to the target electronics(STM32G474RE3), but when I download the Code(verified successfully) and start it, the Processor is hanging when the Timer IRQ for the Debugger is enabled.Supply Voltage is ok, 3....

STM32F411CEU6 ADC data offset does not work

HI,i am using STM32F411 for a digital signal processing intensive application where the ADC is used for continuous acquisition at 1.6MSPS (via DMA), the firmware was developped on STM32L476 for convenience but the final version uses STM32F411CEU6 bec...

Debug code falsely seeing memory as 0 until I break in the debugger

Schrodinger's Memory: In debug my STM32F407VG Discovery code is seeing zeros in an array loaded using DMA (which is working), but if I break and single step, the code suddenly see's the values. Super weird! I´m using STM32CubeIDE which was fully upda...

How to swap DMA/DAC buffer only when a circular dma/dac has completed - STM32H7A/B

Edit: I've pretty much solved my problem. The issue of course was that I was setting the Complete flag in the first cycle. By changing: if(DAC_Complete){ swap_buffer(); DAC_Complete=0; }to:DAC_Complete=0; while(DAC_Complete){ swap_buffer(); }Things a...

Timer input capture with circular DMA. How do I temporarily stop the DMA and then resume?

I'm using an STM32F429. I have setup a timer to capture rising edges on CH1 and a DMA to store the captured values into a circular buffer.How can I temporarily stop the DMA from placing new values into the buffer while I'm reading values from the buf...