sketching up the command library

esp_modem/CMakeLists.txt

@@ -9,7 +9,8 @@ set(srcs "src/esp_modem.c"
         "src/esp_sim7600.c"
         "src/esp_bg96.c"
         "src/esp_modem_dte.cpp"
-        "src/ppp_netif.cpp")
+        "src/ppp_netif.cpp"
+        "src/esp_modem_commands.cpp")
 
 set(include_dirs "include")
 

esp_modem/include/cxx_include/esp_modem_commands.hpp

@@ -0,0 +1,19 @@
+//
+// Created by david on 3/2/21.
+//
+
+#ifndef SIMPLE_CXX_CLIENT_ESP_MODEM_COMMANDS_HPP
+#define SIMPLE_CXX_CLIENT_ESP_MODEM_COMMANDS_HPP
+
+#include "esp_err.h"
+
+namespace esp_modem {
+namespace dce_commands {
+
+template <typename T> esp_err_t sync(T t);
+
+} // dce_commands
+} // esp_modem
+
+
+#endif //SIMPLE_CXX_CLIENT_ESP_MODEM_COMMANDS_HPP

esp_modem/src/esp_modem_commands.cpp

@@ -0,0 +1,36 @@
+#include "cxx_include/esp_modem_commands.hpp"
+#include "cxx_include/esp_modem_dte.hpp"
+#include <string>
+#include <utility>
+
+namespace esp_modem::dce_commands {
+
+template <typename T> esp_err_t sync(T t)
+{
+    return t->send_command("AT\r", [&](uint8_t *data, size_t len) {
+        std::string response((char*)data, len);
+        if (response.find("OK") != std::string::npos) {
+            return ESP_OK;
+        } else if (response.find("ERROR") != std::string::npos) {
+            return ESP_FAIL;
+        }
+        return ESP_ERR_INVALID_STATE;
+    }, 1000);
+}
+
+}
+
+namespace esp_modem {
+
+template <class T>
+class generic_dce {
+public:
+    explicit generic_dce(std::shared_ptr<dte> e) : dce_dte(std::move(e)) {}
+
+    esp_err_t sync() { return dce_commands::sync(dce_dte); }
+
+private:
+    std::shared_ptr<T> dce_dte;
+};
+
+}