31.3.5 Events
The ADC can generate the following events:
| Generator Name | Description | Event Type | Generating Clock Domain | Length of Event | |
|---|---|---|---|---|---|
| Peripheral | Event | ||||
| ADCn | RESRDY | Result ready | Pulse | CLK_PER | One clock period |
The conditions for generating an event are identical to those that will raise the corresponding flag in the Interrupt Flags (ADCn.INTFLAGS) register.
The ADC has one event user for detecting and acting upon input events. The table below describes the event user and the associated functionality.
| User Name | Description | Input Detection | Async/Sync | |
|---|---|---|---|---|
| Peripheral | Input | |||
| ADCn | START | ADC start conversion | Edge | Async |
The ADC can be configured to start a conversion on the rising edge of an event signal by
writing a ‘1’ to the STARTEI bit field in the Event Control (ADCn.EVCTRL)
register. Refer to the Event System (EVSYS) section for more details regarding event
types and Event System configuration.
When an input event trigger occurs, the positive edge will be detected, the Start Conversion (STCONV) bit in the Command (ADCn.COMMAND) register will be set, and the conversion will start. When the conversion is completed, the Result Ready (RESRDY) flag in the Interrupt Flags (ADCn.INTFLAGS) register is set and the STCONV bit in ADCn.COMMAND is cleared.