Any feedback how to create USB composite device ( CDC_USART1 + VCP )were we need to change on the CubeMX Code for STM32f042 ? were can see a good example ? Thanks for the help

We have 3 DMA interrupts  DMA1_Channel1_IRQHandler, DMA1_Channel2_3_IRQHandler, DMA1_Channel4_5_6_7_IRQHandler, i need use 3 interrupts beer 2 channels because i use 3 usart with DMA (3 x channels for TX and channels for RX). 1- i can split the chan...

I need create composite device for the Virtual com and USART1 also USART2.That meaning when we connect the stm32 to PC show 3 COM ports,it's Possible to do that with STM32F042x6?i need help to create the composite device? or see a good example to do ...

i need to write a few command for the STM32 and open a terminal then write the command, i use STM32F042K4U6

Note: when i use the CubeMX and configure the pins for USB cdc and the UART1/2 show warning conflict