fix(esp_modem): Update CMUX example to use CMUX mode automatically

Author: david-cermak

components/esp_modem/examples/simple_cmux_client/main/simple_cmux_client_main.cpp

@@ -87,10 +87,10 @@ extern "C" void app_main(void)
     }
 #endif
 
-    if (dce->set_mode(esp_modem::modem_mode::CMUX_MODE) && dce->set_mode(esp_modem::modem_mode::DATA_MODE)) {
+    if (dce->set_mode(esp_modem::modem_mode::CMUX_MODE)) {
         std::cout << "Modem has correctly entered multiplexed command/data mode" << std::endl;
     } else {
-        ESP_LOGE(TAG, "Failed to configure desired mode... exiting");
+        ESP_LOGE(TAG, "Failed to configure multiplexed command mode... exiting");
         return;
     }
 

components/esp_modem/include/cxx_include/esp_modem_cmux.hpp

@@ -94,7 +94,7 @@ class CMux {
     void send_disc(size_t i);                           /*!< Sending closing request for each virtual terminal */
     void close_down();                                  /*!< Close up the control terminla (term=0) */
     bool exit_cmux_protocol();                          /*!< Sequence of exit of all virtual terms and control term */
-    bool on_cmux(uint8_t *data, size_t len);            /*!< Called from terminal layer when raw CMUX protocol data available */
+    bool on_cmux_data(uint8_t *data, size_t len);            /*!< Called from terminal layer when raw CMUX protocol data available */
 
     struct CMuxFrame;                                   /*!< Forward declare the Frame struct, used in protocol decoders */
     /**