STM32 MCUs Products

STM32F103C8T6 dev board RTC AsynchPrediv = RTC_AUTO_1_SECOND not work correct

Here is my boardhere my clock settingI use CuceMxIDE, here my RTC settingif AsynchPrediv = RTC_AUTO_1_SECOND;rtc take very long time to increase one second. I try some value, and choose 50 and seem the time count rightAsynchPrediv = 50;but I'm not su...

STM32F205 uses TIM_DMA_Update event of timer 8 to trigger DMA2 circularly. In fact, DMA only executes once？

STM32F205 uses the TIM_DMA_Update event loop of timer 8 to trigger DMA2 transport, which moves 5 data from test_data to dest_arr at a time.Using DMA2_Stream1_Channel7, start these two functions in the main program, configure DMA and TIM8, and then ob...

STM32H7 SPI RX DMA not working - bug in HAL?

This project uses STM32Cube_FW_H7_V1.3.2.On STM32H7 I'm using DMA for SPI transfer. I use SPI1 and SPI4, both in D2 domain, together with RAM_D2.In the linker file I added:.dma_buffer : { . = ALIGN(4); *(.dma_buffer) } >RAM_D2The ...

STM32L4xx I2C Interrupts

Please can you help me. I cannot use the HAL as I have to write an ultra low power/ minimalist application. I need to Tx/Rx a few bytes over I2C3 . I have set it up as below but I do not get any interrupts, either event or errors. Can you tell me wh...

I would like to communicate between STM32F407VE (MASTER) and STM32F303RE (SLAVE) using SPI. I am able to send the data from master but the slave is not able to receive it . Could you guide me through the initial steps I should consider

I have generated the driver codes using STM32Cube MX. I am attaching wth this the source codes of both master(main)and slave (main_F3) microcontrollers.Could you help me with this

Does exist in the current datasheet (April 2019 Rev 7) different information?

Does exist in the current datasheet (April 2019 Rev 7) different information about the pinning regarding the alphabetic ordered rows for the TFBGA240+25 package? In chapter 5 Pin descriptions the rows starts with letter "A" and ends with letter "U". ...

I'm trying to measure IDD on a STM32 Nucleo-144 board and I am measuring high current of about 25ma in STOP2 from RTC. Even running the PWR_ModesSelection program it has high current. Am I supposed to be able to read micro amps thru JP5 ?

Can I call time(NULL) from my controller code to get the time?

I'm working with a Nucleo F429ZI. I have "time.h" included in my code, and whenever I call time(NULL), I get a "-1" returned, which I think means that the function call failed. Is there anyway to get the function time(NULL) to return the time, by con...