Enum usart_callback

Callbacks for the Asynchronous USART driver.

Table 1. Members
Enum value	Description
USART_CALLBACK_BUFFER_TRANSMITTED	Callback for buffer transmitted
USART_CALLBACK_BUFFER_RECEIVED	Callback for buffer received
USART_CALLBACK_ERROR	Callback for error
USART_CALLBACK_BREAK_RECEIVED	Callback for break character is received
USART_CALLBACK_CTS_INPUT_CHANGE	Callback for a change is detected on the CTS pin
USART_CALLBACK_START_RECEIVED	Callback for a start condition is detected on the RxD line