There is no support for parity and the throughput is limited, but the latter should not affect most uses. Auto flow control with programmable FIFO level.8 symbols deep FIFOs for receive and transmit.The mini UART has the following features: The mini UART is a secondary low throughput UART intended to be used as a console. Unfortunately there are a number of other consequences: So on the Raspberry Pi 3, the UART hardware interface used for the Bluetooth is named /dev/ttyAMA0 and the new UART connected to pins 8 and 10 on the GPIO connector J8 is named /dev/ttyS0. Now the bluetooth module occupies the UART channel /dev/ttyAMA0 which on previous models was used as the primary serial GPIO UART interface. Hence, the miniUART is now available on /dev/ttyS0. The BCM2837 on the Raspberry Pi3 has 2 UARTs (as did its predecessors), however to support the Bluetooth functionality the fully featured PL011 UART was moved from the header pins to the Bluetooth chip and the mini UART made available on header pins 8 and 10. This used to be pretty easy on the previous versions of the Raspberry Pi models but on the Raspberry Pi 3 model it is a little bit different. Plug in the external hard drive to the USB port of the Raspberry Pi 3. In this article we will try to setup the UART on the Raspberry Pi 3 and Raspberry Pi Zero W running the latest debian “Jessy” release of the kernel. Test AT commands in serial port from USB to serial converter.
