Function esp_idf_sys::pcnt_unit_start

pub unsafe extern "C" fn pcnt_unit_start(
    unit: pcnt_unit_handle_t,
) -> esp_err_t

@brief Start the PCNT unit, the counter will start to count according to the edge and/or level input signals

@note This function should be called when the unit is in the enable state (i.e. after calling pcnt_unit_enable()) @note This function is allowed to run within ISR context @note This function will be placed into IRAM if CONFIG_PCNT_CTRL_FUNC_IN_IRAM is on, so that it’s allowed to be executed when Cache is disabled

@param[in] unit PCNT unit handle created by pcnt_new_unit() @return - ESP_OK: Start PCNT unit successfully - ESP_ERR_INVALID_ARG: Start PCNT unit failed because of invalid argument - ESP_ERR_INVALID_STATE: Start PCNT unit failed because the unit is not enabled yet - ESP_FAIL: Start PCNT unit failed because of other error