> For the complete documentation index, see [llms.txt](https://vishnumaiea.gitbook.io/ptscheduler/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://vishnumaiea.gitbook.io/ptscheduler/master/constants.md).

# Constants

Defined constants.

Here we have all the modes and constants defined.

```cpp
#define debugSerial   Serial  //for debugging

//task modes
#define PT_MODE_EPO     1   //Equal, Periodic, Oneshot
#define PT_MODE_EIO     2   //Equal, Iterated, Oneshot
#define PT_MODE_UPO     3   //Unequal, Periodic, Oneshot
#define PT_MODE_UIO     4   //Unequal, Iterated, Oneshot
#define PT_MODE_EPS     5   //Equal, Periodic, Spanning
#define PT_MODE_EIS     6   //Equal, Iterated, Spanning
#define PT_MODE_UPS     7   //Unequal, Periodic, Spanning
#define PT_MODE_UIS     8   //Unequal, Iterated, Spanning

//sleep modes
#define PT_SLEEP_DISABLE     1    //self-disable mode
#define PT_SLEEP_SUSPEND     2    //self-suspend mode
```