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Suppose I use an oscillator instead of the suggested resonator for LSE. Will that even work, i.e., will the internal RTC continue to function when in battery mode? I assume that I'd have to power both oszillator and STM32 (using Vbat)?
Hi,It seems that in some events the I2C data setup time (Tsu;dat) is not respected by the MCU.Please let me know if I am wrong.I am using the I2C1 of an STM32F745 at 100kHz with the HAL library.The I2C setup was done using the CubeIDE.When using HAL_...
I use the TIM3+DMA function of STM32F103VCT6 to generate PWM. I need to generate a series of adjustable frequencies, adjustable duty ratio and controllable pulse number.Such as 10KHz, 200KHz, 500KHz, 1MHz, 2MHz, 5MHz.I modify the VALUE of TIM's CCR b...
Hi, I've worked a bit on STM32 before (STM32F7 to be more precise), so I have little knowledge about the STM platform. I normally don't need to ask question on forum because Google is a very good professor, but this time I'm not sure to have found en...
Hi everyone! I'm trying to learn how to program microcontrollers with C and stuck with trivial task.I have blue pill, stlink v2 and ssd1306 oled displayI'm trying to enable all pixes on the display via i2c: https://gist.github.com/ksevelyar/5e6c0335a...
I'm working with STM32F405, not sure if I'm asking question in right place, or if it matters... I'm working on a self-test for CRC FLASH (can't use libraries, just basic code). I notice that, for non-optimized code, the generated BIN file matches FLA...
I have to control several LED signals via PWM (up to 16), whose voltage and current can be above the max 5v tolerant and 20-25ma max current GPIO pins. These LED's can change and are not constant. Meaning they have different voltage and current requ...
I'm trying to use the standby mode of STM32F and waking it up by WKUP (PA0) pin.Going to standby seems OK, power consumption goes to 4 uA.If I reset MCU with RESET pin, it starts normally: after 250 ms delay it goes to sleep and consumes 4 uA https:/...
Firstly, I want to say that there is no error on PCB because if I put MCU into standby, consumption is normal - around 5 uA.I have experience with stop mode on STM32L0, but STM32F1 got to my hand for the first time.For some reason, I can't achieve de...
Hello, I'm trying to understand how the HAL_SPI_TransmitReceive_DMA() function works when my mcu is in slave configuration.If I want to transmit and receive data multiple times do I have to call the HAL_SPI_TransmitReceive_DMA() after each transfer o...
