STM32 MCUs Embedded software

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

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Null pointer check needed in HAL_I2C_Mem_Write_DMA

(STM32Cube_FW_F1_V1.8.2/Drivers/STM32F1xx_HAL_Driver/Src/stm32f1xx_hal_i2c.c)In HAL_I2C_Mem_Write_DMA, hi2c->hdmarx may be null but this is not being checked. This causes a crash when invoking HAL_DMA_Abort_IT if there is no DMA used for receiving.bt...

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iforce2d by Associate III
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Can't send one kind of IGMP msg on an STM32F746G Disco, but other kinds go out, and other protocols' msgs as well. A low-level hardware configuration issue? Not using STM driver.

I can send ARP, UDP, ICMP, and so on, and all the other IGMP messages, but not the IGMP V2 Membership Report messages. Wireshark doesn't show those at all, but does show the others going out. So I've written a low-level driver test that composes the ...

PDR by Associate III
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Resolved! Nucleo F746ZG USB CDC VCP won't appear in Windows 10

Hi there!I have a Nucleo F746ZG board that I was going to use to get started with USB programming.I've read every tutorial, every correction suggested to the HAL library (which is, as per usual, full of issues) and absolutely nothing will even get th...

etheory by Senior II
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USB host disconnect automatically

Hi,We are designed board using STM32F207 for USB host. I have 2 keyboard. one keyboard work perfectly & other keyboard also work but after few second automatically disconnect from host & connect it again. Same keyboard work perfectly with STM32F407Di...

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RDals.1 by Associate
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