esp_modem: Initial version based on IDF 4.3

esp_modem/include/esp_modem_compat.h

@@ -0,0 +1,62 @@
+// Copyright 2019 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 "lwip/ip.h"
+
+/**
+* @brief ESP Modem Event backward compatible version
+*/
+typedef enum {
+    MODEM_EVENT_PPP_START      = 0x100,
+    MODEM_EVENT_PPP_CONNECT    = 0x101,
+    MODEM_EVENT_PPP_DISCONNECT = 0x102,
+    MODEM_EVENT_PPP_STOP       = 0x103,
+    MODEM_EVENT_UNKNOWN        = 0x104,
+} esp_modem_compat_event_t;
+
+/**
+ * @brief PPPoS Client IP Information backward compatible version
+ *
+ */
+typedef struct {
+        ip4_addr_t ip;      /*!< IP Address */
+        ip4_addr_t netmask; /*!< Net Mask */
+        ip4_addr_t gw;      /*!< Gateway */
+        ip4_addr_t ns1;     /*!< Name Server1 */
+        ip4_addr_t ns2;     /*!< Name Server2 */
+    } ppp_client_ip_info_t;
+
+/**
+ * @brief Backward compatible version of esp_modem_set_event_handler()
+ */
+esp_err_t esp_modem_add_event_handler(modem_dte_t *dte, esp_event_handler_t handler, void *handler_args)  __attribute__ ((deprecated));
+
+/**
+ * @brief Backward compatible version of creating esp-netif(PPP) and attaching to esp_modem_start_ppp()
+ */
+esp_err_t esp_modem_setup_ppp(modem_dte_t *dte) __attribute__ ((deprecated));
+
+/**
+ * @brief Backward compatible version of deleting esp-netif and  esp_modem_stop_ppp()
+ */
+esp_err_t esp_modem_exit_ppp(modem_dte_t *dte) __attribute__ ((deprecated));
+
+#ifdef __cplusplus
+}
+#endif