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Resolved! STM32F303 does not boot

Hi,I run the NUCLEO-F303RE eval board. I separated the ST-Link part from the target processor part and connected GND/TCK/TMS/NRST/SWO by wires. I populated the 8MHz xtal with Rs and Cs on the target part. This works fine.I copied the circuitry for th...

DetlefS by Associate III
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  • 2 replies
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USB Package do not work

Hello,I have an Olimex board with an STM32F107 cpu on it.It start in the bootloader and I can upload firmware to it.For this I use CubeIDE and CubeProgrammer.I need to give USB support to my application so that to communicate with a PC.In CubeIDE, I ...

MDe by Associate III
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  • 4 replies
  • 0 kudos

problem w/ setting polynomial for CRC

I'm trying to set the polynomial for the CRC block and having some difficulty. I want to set the CRC block to compute a CRC-32K (Reversed Koopman) over my data.Here are the detailsCRC-32K (reversed Koopman polynomial) - 0xEB31D82EInput data - 0x31, 0...

wakeup STM32L0

HiMy name is Jonah and I’m working on STM32L031K4U6  .My device needs to go to standby, wake up via PA2(WKUP3) or RTC wakeupI follow  Doc RM0377 page 869 (to update PRER) , page 870(to update CR)If I write : RTC->CR          =0x00000404U;  ( WUTE=1 b...

yona by Associate
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  • 1 replies
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Resolved! STM32G491 restarts when using I²C

Hi, I am having a problem with a unexpected restart.The first time I use the I²C bus by invoking HAL_I2C_Master_Transmit, the MCU restarts after reaching this line:line 7276 of stm32g4xx_hal_i2c.c/* update CR2 register */MODIFY_REG(hi2c->Instance->CR...

MHens.2 by Associate II
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  • 2 replies
  • 2 kudos

Resolved! STM32F103 LSE load capacitance calculations (RTC)

Hello STM Comunity, I am making this post because I have reviewed many reference schematics for the use of the STM32F103C8T6, and in most of them, I see that they use 20pF load capacitors for the LSE circuit.The datasheet literally states that the va...

Cgelectronics_2-1720257828323.png Cgelectronics_1-1720257805244.png Cgelectronics_0-1720257756991.png Cgelectronics_3-1720260930583.png

Resolved! NUCLEO-G431KB, wrong values on ADC channel 4

Hello Forum,I have an issue while reading the values from ADC. ADC1 is running in "continues scan convertion mode" using DMA and 5 ranks.Here is ADC_Init function:static void MX_ADC1_Init(void) { /* USER CODE BEGIN ADC1_Init 0 */ /* USER CODE E...

Heinrich by Associate III
  • 1986 Views
  • 11 replies
  • 6 kudos

Floating point calculation in ISRs

Hi there,I am using an STM32 G4 MCU for my project, and the FPU is enabled for this project. I need to implement complex floating point calculations in different ISRs with different priorities. Are there any potential risks associated with doing this...

YWang.15 by Associate II
  • 459 Views
  • 3 replies
  • 3 kudos

24-RGB LTDC ESD Protection

Hi. When utilizing a 24-RGB interface, should each individual signal line be equipped with ESD protection? This would demand a small army of TVS diodes/arrays, which is fine, just want to make sure that this is an industry-standard approach.Thanks.

nman by Associate
  • 355 Views
  • 1 replies
  • 0 kudos