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Resolved! STM32F7 USB CDC Device Descriptor Request failing

I am struggling to get USB CDC working. I am very far down a rabbit hole and I'm completely stuck.I am using HAL libraries for USB_OTG_HS on the STM32F746ZGT6, with a 16MHz HSE.I am running in bus powered mode, VBUS detect disabled, and I have hardwi...

lejanz by Associate II
  • 1661 Views
  • 5 replies
  • 2 kudos

Resolved! PWM problems

Hello! Recently I got into STM programming for my internship and I cannot figure out register level programming yet, I have this piece of code ```RCC->AHB1ENR |= RCC_AHB1ENR_GPIOAEN | RCC_APB1ENR_TIM2EN;GPIOA->MODER |=GPIO_MODER_MODE5_1 | GPIO_MODER_...

Petrarka by Associate II
  • 1657 Views
  • 5 replies
  • 0 kudos

Resolved! STM32 ADC DMA low raw/Voltage readings

Hello,I am experiencing the following problem. When I setup an ADC with DMA for 5 channels, occasionally I get lower readings than the expected ones. It also happens in some of our hardware of our production, but others perform ok. We have inspected ...

KoSt_0-1711711015173.png KoSt_1-1711711038152.png KoSt_2-1711711052740.png KoSt_3-1711711167318.png
KoSt by Associate III
  • 7600 Views
  • 24 replies
  • 2 kudos

STM32U575 Independent watchdog timer

Hi, I am using stm32u575 uc trying to use independent watchdog for time 1.2 sec for custom board. The clock configuration is as follows: static void SystemClock_Config(void){RCC_OscInitTypeDef RCC_OscInitStruct = {0};RCC_ClkInitTypeDef RCC_ClkInitStr...

Kajol by Associate
  • 597 Views
  • 1 replies
  • 0 kudos

Master Slave sync queston

I have two nucleo boards communicating over SPI.  No Interrupts; No DMA ;   Using HAL TransmitReceive(..)   Chip Select set by software.  Simple  8 char ASCII Transfer.  Everything Works....almost.  I am using a logic analyzer to monitor the interact...

Greybeard by Associate II
  • 3123 Views
  • 7 replies
  • 0 kudos

Resolved! Cortex-M0 Thumb alignment

Hi everybody,I am using STM32F042G6 MCU for an automotive project and since It doesn't have mush FLASH (32kB) I am trying to reduce code size as much as possible.Lookign at the linker file generated by STM32CubeMX, I see that instructions are aligned...

Resolved! G431 - reset counter and prescaler on input capture

Is there a way to reset the counter and the prescaler via a hard event or something when an input capture happens?I use timer 1 to have a hall interface and to drive timer 8. But there are some fluctuations, because the interrupt (where i reset count...

Tobe by Senior III
  • 628 Views
  • 2 replies
  • 0 kudos

USB HOST with STM32F407 can not activate CH340

I'm using STM32F407 as a USB host. I have multiple devices in which we are using CH340E as the USB to serial communication. The problem is if that device somehow turns off and CH340E loses its power. The USB Host can not transmit data to the other de...

MKDas by Associate II
  • 1070 Views
  • 1 replies
  • 0 kudos