Architecture Description

Architecture Description

Figure 1 : Architecture of TIMER APP

The figure above represents the internal software architecture of the TIMER APP. A TIMER APP instance exists in a DAVE™ project with fixed attributes as shown. Each instance of this APP configures one CCU slice timer in the MCU. This in addition requires the consumption of the GLOBAL_CCUx (x = [4,8]) and CLOCK APPS for its configuration and functioning. The TIMER APP also provides output signal for inter-peripheral connections.

An instantiated APP (after code generation) generates a specific data structure with the GUI configuration. The name of this data structure can be modified by changing the APP instance label (e.g. change label from default TIMER_0 to GAME_DELAY).

Signals:

The following table presents the signals provided by the APP for connection. The signal gives the flexibility to configure and extend the connectivity to other APPs.

Table 1: APP I/O signals

Signal Name	Input/Output	Availability	Description
event_time_interval	Output	Conditional	Time interval event signal: Upon enabling the "Time interval event" in GUI, signal is populated. Connect with an INTERRUPT APP to generate the interrupt for each time interval. Connect with other peripherals(e.g. ADC, ERU, DMA, DAC, POSIF) as a trigger source.

APPS Consumed:

The following table presents the APPs consumed to support the functionality:

Table 2: APPs Consumed

APP Name	Consumption	Description
GLOBAL_CCU4	Conditionally consumed if "CCU4" is selected in UI field "Select timer module"	Enable the selected CCU4 timer module, by configuring the global registers. Start the prescaler. This enables the clock to the selected timer internally.
GLOBAL_CCU8	Conditionally consumed if "CCU8" is selected in UI field "Select timer module"	Enable the selected CCU4 timer module, by configuring the global registers. Start the prescaler. This enables the clock to the selected timer internally.