STM32 MCUs Embedded software

Ask questions and find answers on STM32Cube packages, including HAL, LL and middleware, and expansion software.

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Forum Posts

USB device double buffering (CDC Class).

Hi,I have some difficulties to configure USB device using OUT EP double buffering (used with CC class).While using simple buffering we get slow transfer rates (1 out o 2 packet NAKed), when I use HAL_PCDEx_PMAConfig(PCD_DBL_BUF), USB transfers hangs....

VStép.1 by Associate
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Chip selection for 2-port CDC host

I need a 2-port host that can bridge 2 CDC slaves. What is the best chip for doing this?  I don't want to spend much time doing software development like writing CDC drivers.

JHu.1 by Associate
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  • 4 replies
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STM32L412 VDDUSB Disconnect

I am using STM32L412RB for a low power application.VDD: 1.8VI have a 3.3V regulator that I would like to only turn on when I am using USB. According to the datasheet (https://www.st.com/resource/en/datasheet/stm32l412kb.pdf pg 19), VDDUSB = 3.0 to 3....

JHong.1 by Associate
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  • 1 replies
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