[preferences] adding getType command

Author: andreagilardoni

UNOR4USBBridge/cmds_preferences.h

@@ -200,6 +200,33 @@ void CAtHandler::add_cmds_preferences() {
       }
    };
 
+   /* ....................................................................... */
+   command_table[_PREF_TYPE] = [this](auto & srv, auto & parser) {
+   /* ....................................................................... */
+      switch (parser.cmd_mode) {
+         case chAT::CommandMode::Write: {
+            if (parser.args.size() != 1) {
+               return chAT::CommandStatus::ERROR;
+            }
+
+            auto &key = parser.args[0];
+            if (key.empty()) {
+               return chAT::CommandStatus::ERROR;
+            }
+
+            String error = String(pref.getType(key.c_str())) + "\r\n";
+
+            srv.write_response_prompt();
+            srv.write_str((const char *)(error.c_str()));
+            srv.write_line_end();
+            return chAT::CommandStatus::OK;
+
+         }
+         default:
+            return chAT::CommandStatus::ERROR;
+      }
+   };
+
    /* ....................................................................... */
    command_table[_PREF_GET] = [this](auto & srv, auto & parser) {
    /* ....................................................................... */

UNOR4USBBridge/commands.h

@@ -130,6 +130,7 @@ enum file_op {
 #define _PREF_CLEAR              "+PREFCLEAR"
 #define _PREF_REMOVE             "+PREFREMOVE"
 #define _PREF_PUT                "+PREFPUT"
+#define _PREF_TYPE               "+PREFTYPE"
 #define _PREF_GET                "+PREFGET"
 #define _PREF_LEN                "+PREFLEN"
 #define _PREF_STAT               "+PREFSTAT"