21.5.3 Event Control
| Name: | EVCTRL |
| Offset: | 0x04 |
| Reset: | 0x00 |
| Property: | - |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| FILTER | EDGE | CAPTEI | |||||||
| Access | R/W | R/W | R/W | ||||||
| Reset | 0 | 0 | 0 |
Bit 6 – FILTER Input Capture Noise Cancellation Filter
Writing this bit to '1' enables the input capture noise cancellation unit.
Bit 4 – EDGE Event Edge
This bit is used to select the event edge. The effect of this bit is dependent on the selected Count Mode (CNTMODE) in TCBn.CTRLB. "-" means that an event or edge has no effect in this mode.
| Count Mode | EDGE | Positive Edge | Negative Edge |
|---|---|---|---|
| Periodic Interrupt mode | 0 | - | - |
| 1 | - | - | |
| Timeout Check mode | 0 | Start counter | Stop counter |
| 1 | Stop counter | Start counter | |
| Input Capture on Event mode | 0 | Input Capture, interrupt | - |
| 1 | - | Input Capture, interrupt | |
| Input Capture Frequency Measurement mode | 0 | Input Capture, clear and restart counter, interrupt | - |
| 1 | - | Input Capture, clear and restart counter, interrupt | |
| Input Capture Pulse-Width Measurement mode | 0 | Clear and restart counter | Input Capture, interrupt |
| 1 | Input Capture, interrupt | Clear and restart counter | |
| Input Capture Frequency and Pulse-Width Measurement mode | 0 |
On 1st Positive: Clear and restart counter On following Negative: Input Capture 2nd Positive: Stop counter, interrupt |
|
| 1 |
On 1st Negative: Clear and restart counter On following Positive: Input Capture 2nd Negative: Stop counter, interrupt |
||
| Single-Shot mode | 0 | Start counter | - |
| 1 | Start counter | Start counter | |
| 8-Bit PWM mode | 0 | - | - |
| 1 | - | - | |
Bit 0 – CAPTEI Capture Event Input Enable
Writing this bit to '1' enables the input capture event.