> Am 20.08.2016 um 15:34 schrieb One Thousand Gnomes <gnomes@xxxxxxxxxxxxxxxxxxx>: >> What it is not about are UART/RS232 converters connected through USB or virtual >> serial ports created for WWAN modems (e.g. /dev/ttyACM, /dev/ttyHSO). Or BT devices >> connected through USB (even if they also run HCI protocol). > > It actually has to be about both because you will find the exact same > device wired via USB SSIC/HSIC to a USB UART or via a classic UART. Not is > it just about embedded boards. Not necessarily. We often have two interface options for exactly the sam sensor chips. They can be connected either through SPI or I2C. Which means that there is a core driver for the chip and two different transport glue components (see e.g. iio/accel/bmc150). This does not require I2C to be able to handle SPI or vice versa or provide a common API. And most Bluetooth devices I know have either UART or a direct USB interface. So in the USB case there is no need to connect it through some USB-UART bridge and treat it as an UART at all. BR, Nikolaus -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
