esp_modem: Expose set_error_cb method

components/esp_modem/include/cxx_include/esp_modem_dte.hpp

@@ -75,6 +75,12 @@ public:
      */
     void set_read_cb(std::function<bool(uint8_t *data, size_t len)> f);
 
+    /**
+     * @brief Sets DTE error callback
+     * @param f Function to be called on DTE error
+     */
+    void set_error_cb(std::function<void(terminal_error err)> f);
+
     /**
      * @brief Sets the DTE to desired mode (Command/Data/Cmux)
      * @param m Desired operation mode

components/esp_modem/include/cxx_include/esp_modem_terminal.hpp

@@ -41,6 +41,7 @@ enum class terminal_error {
     BUFFER_OVERFLOW,
     CHECKSUM_ERROR,
     UNEXPECTED_CONTROL_FLOW,
+    DEVICE_GONE,
 };
 
 /**