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Voltage with DACs unstable

I'm using the DACs of STM32F303K8. The max voltage of the DAC1 is 3.3V but the second is 3V.I don't find any explanation for it and it looks like also quite strange.​PS. To my nucleo is not. Connected to any Vref. It is necessary?​Anyone can help me?

FTrom by Associate II
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  • 18 replies
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STM32H723ZGT6 accidental Vcore overvoltage

Hello,I designed a custom board with an STM32H723ZGT6.It worked fine, then, long story short, this happened:I accidentally connected the VCAP pins (Vcore voltage) to 3.3V, then switched the board on. After about 2...3 seconds I realised something is ...

vjaz by Associate
  • 821 Views
  • 2 replies
  • 0 kudos

Need for Speed Using STM32 SPI with DMA to W5500.

I am porting the code from ATMega128 to STM32F103 for faster throughput to WIZNET W5500 using the WebServer.C for ATMega128. I am using the HAL coding as I am new to STM32. While the throughput is faster than the ATMega128 but I need more speed. Cha...

CK.3 by Associate III
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  • 9 replies
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Resolved! stm32f103c8t6 DMA sends data only from the stack

I have set up a project in a cube. SPI + DMA. When the mcu sends data from the stack, the DMA works fine and activity is visible on the pins. But if allocate an array of data in bss as static or global, then nothing happens on the pins. The program r...

TAndr.1 by Associate II
  • 763 Views
  • 1 replies
  • 1 kudos

xSemaphoreTake not working properly

Hi, xSemaphoreTake is not working properly(getting held at taskENTER_CRITICAL) after existing sleep mode. Before entering sleep mode using HAL_PWR_EnterSLEEPMode the value of portNVIC_INT_CTRL_REG is 4194304. After exiting from sleep mode using an ex...

KK Y.1 by Associate II
  • 848 Views
  • 0 replies
  • 0 kudos

Touch-GFX-Sample with ILI9341-SPI wanted (dead or alive ;-)

Hello,I'm now spent about three weeks with trying to set up a custom board with the M7-Core of a STM32H745BIT6 to work with an ILI9341-controlled display via SPI.Interfacing the ILI and writing a bitmap to the display even with 50Mhz SPI Clock (with ...

Sven1 by Associate II
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  • 13 replies
  • 0 kudos