1 // Copyright 2015-2021 Espressif Systems (Shanghai) PTE LTD 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #pragma once 16 17 #ifdef __cplusplus 18 extern "C" { 19 #endif 20 21 /** 22 * @brief PCNT channel action on control level 23 * 24 */ 25 typedef enum { 26 PCNT_CHANNEL_LEVEL_ACTION_KEEP, /*!< Keep current count mode */ 27 PCNT_CHANNEL_LEVEL_ACTION_INVERSE, /*!< Invert current count mode (increase -> decrease, decrease -> increase) */ 28 PCNT_CHANNEL_LEVEL_ACTION_HOLD, /*!< Hold current count value */ 29 } pcnt_channel_level_action_t; 30 31 /** 32 * @brief PCNT channel action on signal edge 33 * 34 */ 35 typedef enum { 36 PCNT_CHANNEL_EDGE_ACTION_HOLD, /*!< Hold current count value */ 37 PCNT_CHANNEL_EDGE_ACTION_INCREASE, /*!< Increase count value */ 38 PCNT_CHANNEL_EDGE_ACTION_DECREASE, /*!< Decrease count value */ 39 } pcnt_channel_edge_action_t; 40 41 /** 42 * @brief PCNT unit counter value's sign 43 * 44 */ 45 typedef enum { 46 PCNT_UNIT_COUNT_SIGN_ZERO_POS, /*!< positive value to zero */ 47 PCNT_UNIT_COUNT_SIGN_ZERO_NEG, /*!< negative value to zero */ 48 PCNT_UNIT_COUNT_SIGN_NEG, /*!< counter value negative */ 49 PCNT_UNIT_COUNT_SIGN_POS, /*!< counter value positive */ 50 } pcnt_unit_count_sign_t; 51 52 #ifdef __cplusplus 53 } 54 #endif 55
