====== Asynchron serial interface (UART) ======

<note important>For this functionality the **[[io_project|IO project]]** (base or pro) has to be  [[fwupdates|uploaded]] to Netzer.</note> 

In UART mode signal RX is configured as receive pin and TX is configured as transmit pin for serial interface.

The interface can be configured via Netzer web interface.


===== Baudrate =====

The following baudrates are supported.
Due to external crystal and clock generation a system error arises.

^ Baudrate in Baud ^ Error in % ^
| 300 | 0 |
| 1200 | 0,01 |
| 2400 | 0,01 |
| 4800 | 0,0072 |
| 9600 | 0,01 |
| 19200 | -0,08 |
| 38400 | 0,098 |
| 57600 | -0,08 |
| 115200 | 0,47 |


===== Data format =====

The standard data format is one start bit, 8 data bits and one stopbit.
The parity bit is optional and can be set like (only **IO_pro**):

^ Mode ^ Description ^
| None | No parity is transmitted/accepted. |
| Odd | An odd parity is transmitted/accepted. |
| Even | An even parity is transmitted/accepted. |
| Mark | The parity bit is always 1. This setting can be used to emulate a second stop bit. |
| Space | The parity bit is always 0. |


===== Handshakes (only **IO_pro**) =====

Coming soon.