STM32 MCUs Products

HAL_RCC_GetSysClockFreq(void) wastes code space with unnecessary (unt64_t) divide.

HAL_RCC_GetSysClockFreq(void) in stm32f7xx_hal_rcc.c uses a (unt64_t) divide which could be avoided. This uses, on my build, 716 bytes of code space alone for the required _udivmoddi4 call, and this is not used anywhere else in my code.Would it be po...

STM32L476RG USART not transmitting?

I'm trying to send exactly 8 bits of data, and check my results with tera terminal, however I'm not seeing anything come up. I noticed that on the block diagram for the STM32L476RG nucleo board, that the APB1 Bus is also connected to AHB1, but there ...

Unable to communicate with LCD2004a via I2C (Nucleo-F103RB)

Hell guys, i'm trying to communicate with LCD2004a with the I2C extender.i followed this guide https://www.youtube.com/watch?v=7mQppaEJjT4what i did:I generated project using CUBEMX to Keil uvisionconfigure I2C with those parameters: 100Khz CLK, slav...

Hi, I need to stop a PWM sometimes and in these cases both the low and the high side Pin should be pulled to low. Is it possible to do that?

I am working with a STM32G474 and I want to use a PWM with 390kHz for a boost converter. I generate a PWM with the HRTIM WaveformOutputStart. Using WaveformOutputStop pulls the LPWM to low, but the HPWM remains on high.

Clarification of Entering, Leaving and Remaining in Sleep

Suppose that my system consists of 3 modulesmain... at the end of the while loop, I want the system to enter sleep mode, so at the end of the while, I put wfi(); or possibly I put DSB(); after that. Other examples replace wfi() with HAL_PWR_EnterSLEE...

How to use HAL_UART_Receive_IT to stop current function and execute Callback?

I am using a keyboard to read several commands using HAL_UART_Recieve(). For each command I perform a different function. There are 3 such commands corresponding to one function each.Assuming 3 functions multiply(), divide(), add() which are called i...

Where can I find the libg3 library?

I am curious as to why the QSPI HAL documentation appears to be missing from DM00392525 STM32H7-HAL-AND-LOW-LEVEL-DRIVERS? It has OSPI and SPI, but lacks the QSPI HAL.

Problem with using PLL and two SPI on STM32F103C8 bluepill

Hey there,I want to recieve two SPI signals sharing the same Enable Line, e.g. having exactly the same speed. I record them using the HAL_SPI_Receive_DMA function and count how many times SPI1 and SPI2 filled there respective Buffers. When using HSI ...