esp_modem: Refactor the modem to a standalone managed component

esp_modem/private_include/esp_modem_dte_internal.h

@@ -0,0 +1,57 @@
+// Copyright 2020 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_log.h"
+#include "esp_modem.h"
+#include "esp_modem_dte.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/event_groups.h"
+
+/**
+ * @brief Main lifecycle states of the esp-modem
+ *
+ * The bits below are used to indicate events in process_group
+ * field of the esp_modem_dte_internal_t
+ */
+#define ESP_MODEM_START_BIT     BIT0
+#define ESP_MODEM_COMMAND_BIT   BIT1
+#define ESP_MODEM_STOP_PPP_BIT  BIT2
+#define ESP_MODEM_STOP_BIT      BIT3
+
+/**
+ * @brief ESP32 Modem DTE
+ *
+ */
+typedef struct {
+    uart_port_t uart_port;                  /*!< UART port */
+    uint8_t *buffer;                        /*!< Internal buffer to store response lines/data from DCE */
+    QueueHandle_t event_queue;              /*!< UART event queue handle */
+    esp_event_loop_handle_t event_loop_hdl; /*!< Event loop handle */
+    TaskHandle_t uart_event_task_hdl;       /*!< UART event task handle */
+    EventGroupHandle_t process_group;       /*!< Event group used for indicating DTE state changes */
+    esp_modem_dte_t parent;                 /*!< DTE interface that should extend */
+    esp_modem_on_receive receive_cb;        /*!< ptr to data reception */
+    void *receive_cb_ctx;                   /*!< ptr to rx fn context data */
+    int line_buffer_size;                   /*!< line buffer size in command mode */
+    int pattern_queue_size;                 /*!< UART pattern queue size */
+} esp_modem_dte_internal_t;
+
+#ifdef __cplusplus
+}
+#endif