Hi,I currently working on the EC25 Modem using STM32F407VG support for CDC, where I am able to get all the enumerated values of Device Descriptors, Configuration descriptor and Interfaces but unable to transmit the data and get the response back, and...

Hi,I am currently working on EMAC and I am a beginner ,So I want to know that why RX_ER is made optional for connection and if it made optional then how the errors are detected during reception.@STea@LCE