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pcnt_unit_add_watch_point() function
Add a watch point for PCNT unit, PCNT will generate an event when the counter value reaches the watch point value
Syntax
Implemented in ![]()
pulse_cnt.c:547
Return value
- ESP_OK: Add watch point successfully - ESP_ERR_INVALID_ARG: Add watch point failed because of invalid argument (e.g. the value to be watched is out of the limitation set in `pcnt_unit_config_t`) - ESP_ERR_INVALID_STATE: Add watch point failed because the same watch point has already been added - ESP_ERR_NOT_FOUND: Add watch point failed because no more hardware watch point can be configured - ESP_FAIL: Add watch point failed because of other error
Related Functions
Found 16 other functions taking a ![]()
pcnt_unit_t
argument:
Function
Description
Create PCNT channel for specific unit, each PCNT has several channels associated with it
Start the PCNT unit, the counter will start to count according to the edge and/or level input signals
Clear PCNT pulse count value to zero
Get PCNT count value
Set glitch filter for PCNT unit
Enable the PCNT unit
Set event callbacks for PCNT unit
Remove a watch point for PCNT unit
Disable the PCNT unit
Stop PCNT from counting
Delete the PCNT unit handle
Add a step notify for PCNT unit, PCNT will generate an event when the incremental(can be positive or negative) of counter value reaches the step interval
Remove a step notify for PCNT unit