STMOD_CELLULAR: remove flow control support for DISCO_L4R9I

Author: jeromecoutant

components/cellular/COMPONENT_STMOD_CELLULAR/STModCellular.cpp

@@ -109,7 +109,6 @@ nsapi_error_t STModCellular::soft_power_on()
 
     tr_debug("Modem %sready to receive AT commands\r\n", rdy ? "" : "NOT ");
 
-#if DEVICE_SERIAL_FC
     if ((MBED_CONF_STMOD_CELLULAR_CTS != NC) && (MBED_CONF_STMOD_CELLULAR_RTS != NC)) {
         tr_debug("Enable flow control\r\n");
 
@@ -131,7 +130,6 @@ nsapi_error_t STModCellular::soft_power_on()
             tr_error("Failed to enable hw flow control\r\n");
         }
     }
-#endif
 
     rtos::ThisThread::sleep_for(500);
 
@@ -163,10 +161,10 @@ CellularDevice *CellularDevice::get_default_instance()
     tr_debug("MODEM default instance\r\n");
 
     static UARTSerial serial(MBED_CONF_STMOD_CELLULAR_TX, MBED_CONF_STMOD_CELLULAR_RX, MBED_CONF_STMOD_CELLULAR_BAUDRATE);
-#if defined (MBED_CONF_STMOD_CELLULAR_RTS) && defined(MBED_CONF_STMOD_CELLULAR_CTS)
-    tr_debug("STMOD_CELLULAR flow control: RTS %d CTS %d\r\n", MBED_CONF_STMOD_CELLULAR_RTS, MBED_CONF_STMOD_CELLULAR_CTS);
-    serial.set_flow_control(SerialBase::RTSCTS, MBED_CONF_STMOD_CELLULAR_RTS, MBED_CONF_STMOD_CELLULAR_CTS);
-#endif
+    if ((MBED_CONF_STMOD_CELLULAR_CTS != NC) && (MBED_CONF_STMOD_CELLULAR_RTS != NC)) {
+        tr_debug("STMOD_CELLULAR flow control: RTS %d CTS %d\r\n", MBED_CONF_STMOD_CELLULAR_RTS, MBED_CONF_STMOD_CELLULAR_CTS);
+        serial.set_flow_control(SerialBase::RTSCTS, MBED_CONF_STMOD_CELLULAR_RTS, MBED_CONF_STMOD_CELLULAR_CTS);
+    }
     static STModCellular device(&serial);
     return &device;
 }

components/cellular/COMPONENT_STMOD_CELLULAR/mbed_lib.json

@@ -65,5 +65,10 @@
             "help": "Provide as default CellularDevice [true/false]",
             "value": false
         }
+    },
+    "target_overrides": {
+        "DISCO_L4R9I": {
+            "rts": "NC"
+        }
     }
 }