STM32 MCUs Products

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Forum Posts

VREF+ drops when DAC is used (STM32G0)

I use a LM4040 voltage reference IC to generate a 3.00V reference voltage for the STM32G0 VREF+ pin. The resistor is 750 ohms, so 4mA can be sourced to the VREF+ pin (the datasheet specifies a minimum of 500 uA). I use the STM32G0 DAC (channel 1 only...

JLemi by Associate III
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  • 8 replies
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STM32 Database communication ?

Hi everyone ,İs there any library to communication with db ? Which one db is does not matter .PS: Of course LWIP already implemented.

YAlya.1 by Associate
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  • 3 replies
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RTC on STM32H745

Hi, We are using a STM32H745 in our project. Over the past few days, I've been wasting a lot of time figuring out why RTC has a major error ... it always runs slower than it should. To be sure we tried to used the crystal and the capacities present i...

DMast.1 by Associate II
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  • 6 replies
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Resolved! Clocks configuration - STM32F429

Hi everyone, I try to understand more deeply the the whole clocks issue and how each frequency affects the running time. My board is STM32F429, and the clock configuration set by default (maximum values). This is the best configuration for fast runni...

AS.5 by Associate II
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  • 3 replies
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Why that complicated UART baudrate formula for STM32F1

In RM0008 cha 27.3.4 talks of " Fractional baud rate generation" and goes at length with examples of those fractional number. If the "fractional" stuff is broken down to integers, it boils down that simply baud = f(clk) / BRR.Or, as libopencm3 write...

Resolved! How to reset Nucleo F401RE (Blocked board)

Hello everyone, I'm new on STM32.My Board is blocked in this state (see on the photo) : 2 led at red state continuously.And when I try to load program in the board, this type of erros occured : Error launching GDB server.Thanks for your Help !

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LHerm.1 by Associate III
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  • 4 replies
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Resolved! STM32 BringUp Protoclol

Hi Is there a test procedure you guys follow when you BringUp MCU with new a PCB board?Beside testing interfaces like UART, I2C, Ethernet, Etc.. how do you test the internal MCU Configuration: registers configuration Clocks and PrescalersAXI BusCPU C...

deckhard by Associate III
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  • 2 replies
  • 0 kudos