mirror of
https://github.com/espressif/ESP8266_RTOS_SDK.git
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98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
// Copyright 2018-2025 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include "esp_err.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Currently only supports infrared NEC code */
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/* NEC time parameter configuration */
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#define IR_TX_NEC_BIT_NUM 8
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#define IR_TX_NEC_HEADER_HIGH_US 9000
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#define IR_TX_NEC_HEADER_LOW_US 4500
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#define IR_TX_NEC_DATA_HIGH_US 560
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#define IR_TX_NEC_DATA_LOW_1_US 1690
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#define IR_TX_NEC_DATA_LOW_0_US 560
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#define IR_TX_NEC_REP_HIGH_US 9000
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#define IR_TX_NEC_REP_LOW_US 2250
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#define IR_TX_NEC_REP_STOP_US 562
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#define IR_TX_NEC_REP_CYCLE 108000
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#define IR_TX_ERROR_US 40 // Timing in advance to reduce errors
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/**
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* @brief ir tx initialization parameter structure type definition
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*/
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typedef struct {
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uint32_t io_num; // 2 or 14, 2: I2SO_WS 14: I2SI_WS
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uint32_t freq;
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} ir_tx_config_t;
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/**
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* @brief ir tx data union type definition
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*/
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typedef union {
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struct {
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uint32_t addr1: 8;
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uint32_t addr2: 8;
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uint32_t cmd1: 8;
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uint32_t cmd2: 8;
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};
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uint32_t val; /*!< union fill */
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} ir_tx_nec_data_t;
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/**
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* @brief Send ir data
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*
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* @note If multiple data are identical, repeat signals will be used.
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* Infrared data consumes more than 100 ms per transmission, so note the timeout_ticks parameter
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*
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* @param data Pointer to the tx data buffer
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* @param len Length of ir_tx_data, range: 0 < len < (uint16_t)
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* @param timeout_ticks freertos timeout ticks
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*
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* @return
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* - -1 error
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* - length The actual length of data sent
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*/
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int ir_tx_send_data(ir_tx_nec_data_t *data, size_t len, uint32_t timeout_ticks);
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/**
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* @brief Deinit the ir tx
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*
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* @return
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* - ESP_OK Success
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* - ESP_FAIL ir tx has not been initialized yet
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*/
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esp_err_t ir_tx_deinit();
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/**
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* @brief Initialize the ir tx
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*
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* @param config Pointer to deliver initialize configuration parameter
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*
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* @return
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* - ESP_OK Success
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* - ESP_ERR_NO_MEM malloc fail
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* - ESP_FAIL ir tx has been initialized
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*/
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esp_err_t ir_tx_init(ir_tx_config_t *config);
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#ifdef __cplusplus
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}
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#endif
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