esp_modem: Moved to component folder

components/esp_modem/src/esp_modem_dce.cpp

@@ -0,0 +1,72 @@
+// Copyright 2021 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.
+
+#include "cxx_include/esp_modem_dte.hpp"
+#include "cxx_include/esp_modem_dce.hpp"
+#include "esp_log.h"
+
+namespace esp_modem {
+
+
+bool DCE_Mode::set(DTE *dte, ModuleIf *device, Netif &netif, modem_mode m)
+{
+    switch (m) {
+        case modem_mode::UNDEF:
+            break;
+        case modem_mode::COMMAND_MODE:
+            if (mode == modem_mode::COMMAND_MODE)
+                return false;
+            netif.stop();
+            if (!device->set_mode(modem_mode::COMMAND_MODE))
+                return false;
+            dte->set_read_cb([&](uint8_t *data, size_t len) -> bool {
+                ESP_LOG_BUFFER_HEXDUMP("esp-modem: debug_data", data, len, ESP_LOG_INFO);
+                return false;
+            });
+            netif.wait_until_ppp_exits();
+            dte->set_read_cb(nullptr);
+            if (!dte->set_mode(modem_mode::COMMAND_MODE))
+                return false;
+            mode = m;
+            return true;
+        case modem_mode::DATA_MODE:
+            if (mode == modem_mode::DATA_MODE)
+                return false;
+            if (!device->setup_data_mode())
+                return false;
+            if (!device->set_mode(modem_mode::DATA_MODE))
+                return false;
+            if (!dte->set_mode(modem_mode::DATA_MODE))
+                return false;
+            netif.start();
+            mode = m;
+            return true;
+        case modem_mode::CMUX_MODE:
+            if (mode == modem_mode::DATA_MODE || mode == modem_mode::CMUX_MODE)
+                return false;
+            device->set_mode(modem_mode::CMUX_MODE);
+            if (!dte->set_mode(modem_mode::CMUX_MODE))
+                return false;
+            mode = modem_mode::COMMAND_MODE;
+            return true;
+    }
+    return false;
+}
+
+modem_mode DCE_Mode::get()
+{
+    return mode;
+}
+
+} // esp_modem