esp-idf/examples/protocols/pppos_client/components/modem/include/esp_modem.h

142 lines
4.1 KiB
C
Raw Normal View History

// Copyright 2015-2018 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#pragma once
#ifdef __cplusplus
extern "C" {
#endif
#include "esp_modem_dce.h"
#include "esp_modem_dte.h"
#include "esp_event.h"
#include "driver/uart.h"
#include "esp_modem_compat.h"
/**
* @brief Declare Event Base for ESP Modem
*
*/
ESP_EVENT_DECLARE_BASE(ESP_MODEM_EVENT);
/**
* @brief ESP Modem Event
*
*/
typedef enum {
ESP_MODEM_EVENT_PPP_START = 0, /*!< ESP Modem Start PPP Session */
ESP_MODEM_EVENT_PPP_STOP = 3, /*!< ESP Modem Stop PPP Session*/
ESP_MODEM_EVENT_UNKNOWN = 4 /*!< ESP Modem Unknown Response */
} esp_modem_event_t;
/**
* @brief ESP Modem DTE Configuration
*
*/
typedef struct {
uart_port_t port_num; /*!< UART port number */
uart_word_length_t data_bits; /*!< Data bits of UART */
uart_stop_bits_t stop_bits; /*!< Stop bits of UART */
uart_parity_t parity; /*!< Parity type */
modem_flow_ctrl_t flow_control; /*!< Flow control type */
uint32_t baud_rate; /*!< Communication baud rate */
} esp_modem_dte_config_t;
/**
* @brief Type used for reception callback
*
*/
typedef esp_err_t (*esp_modem_on_receive)(void *buffer, size_t len, void *context);
/**
* @brief ESP Modem DTE Default Configuration
*
*/
#define ESP_MODEM_DTE_DEFAULT_CONFIG() \
{ \
.port_num = UART_NUM_1, \
.data_bits = UART_DATA_8_BITS, \
.stop_bits = UART_STOP_BITS_1, \
.parity = UART_PARITY_DISABLE, \
.baud_rate = 115200, \
.flow_control = MODEM_FLOW_CONTROL_NONE \
}
/**
* @brief Create and initialize Modem DTE object
*
* @param config configuration of ESP Modem DTE object
* @return modem_dte_t*
* - Modem DTE object
*/
modem_dte_t *esp_modem_dte_init(const esp_modem_dte_config_t *config);
/**
* @brief Register event handler for ESP Modem event loop
*
* @param dte modem_dte_t type object
* @param handler event handler to register
* @param handler_args arguments for registered handler
* @return esp_err_t
* - ESP_OK on success
* - ESP_ERR_NO_MEM on allocating memory for the handler failed
* - ESP_ERR_INVALID_ARG on invalid combination of event base and event id
*/
esp_err_t esp_modem_set_event_handler(modem_dte_t *dte, esp_event_handler_t handler, int32_t event_id, void *handler_args);
/**
* @brief Unregister event handler for ESP Modem event loop
*
* @param dte modem_dte_t type object
* @param handler event handler to unregister
* @return esp_err_t
* - ESP_OK on success
* - ESP_ERR_INVALID_ARG on invalid combination of event base and event id
*/
esp_err_t esp_modem_remove_event_handler(modem_dte_t *dte, esp_event_handler_t handler);
/**
* @brief Setup PPP Session
*
* @param dte Modem DTE object
* @return esp_err_t
* - ESP_OK on success
* - ESP_FAIL on error
*/
esp_err_t esp_modem_start_ppp(modem_dte_t *dte);
/**
* @brief Exit PPP Session
*
* @param dte Modem DTE Object
* @return esp_err_t
* - ESP_OK on success
* - ESP_FAIL on error
*/
esp_err_t esp_modem_stop_ppp(modem_dte_t *dte);
/**
* @brief Setup on reception callback
*
* @param dte ESP Modem DTE object
* @param receive_cb Function pointer to the reception callback
* @param receive_cb_ctx Contextual pointer to be passed to the reception callback
*
* @return ESP_OK on success
*/
esp_err_t esp_modem_set_rx_cb(modem_dte_t *dte, esp_modem_on_receive receive_cb, void *receive_cb_ctx);
#ifdef __cplusplus
}
#endif