![]() ![]() You can use CDC ACM to implement a USB-to-serial adapter, or you can just use it as a general purpose communication interface for whatever data you want to send.Yes, you do need a driver on the PC side. ![]() It does not specify what the device will actually do with that data. ![]() The device you made could be called a 'CDC ACM device' because it uses the CDC class and the ACM subclass.These classes and subclasses are defined by the USB Implementers Forum in documents that you can find here:These documents specify things like what USB descriptors a CDC ACM device should have in order to describe itself to the host, and what kinds of interfaces and endpoints it should have, and how serial data will be represented in terms of USB transactions and transfers.Note that CDC ACM only specifies some USB commands for transferring data between the host and the device. ![]()
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