The ISR puts the received USART data on a stream buffer called
terminal_rx_buffer. The terminal receive task is
then taking the received data on the terminal_rx_buffer,
and based on the received message, calls an update time function unless a
time-out has occurred. The terminal receive task reports back to the
terminal transmit task via the terminal_tx_buffer about the
latest event, whether the time was set or if the request timed out. Refer to
the figure below for the UML diagram.
The figure below shows a more in-depth description of the “receive bytes and update new_time” block.
The communication between the two terminal tasks as well as the USART communication is described in the figure below.
