It is typically used for consuming analog port pins. The following figures shows how top level APPs like ADC_MEASUREMENT APP uses ANALOG_IO APP for consuming analog port pin.
Figure 1 shows instantiation of ADC_MEASUREMENT APP.
Figure 1 : Instantiation of ADC_MEASUREMENT APP
When Expose pin in Measurements Tab of ADC_MEASUREMENT APP is enabled,as shown in figure 2, ANALOG_IO APP is consumed by top level APP(ADC_MEASUREMENT APP) as shown in figure 3, it interns consumes analog port pin.
Figure 2 : ADC_MEASUREMENT APP
Figure 3 : ADC_MEASUREMENT APP
- This is the one usecase of the ANALOG_IO APP, which shown above how top level APPs are using it.