Bsongis/trainer sbus x9e (#7227)

Fixex #5636

radio/src/gui/gui_common.cpp

@@ -724,6 +724,13 @@ bool isTrainerModeAvailable(int mode)
     return false;
 #endif
 
+#if defined(PCBX9E)
+  if (g_eeGeneral.bluetoothMode && mode == TRAINER_MODE_MASTER_SBUS_EXTERNAL_MODULE) {
+    // bluetooth uses the same USART than SBUS
+    return false;
+  }
+#endif
+
 #if defined(PCBTARANIS) && !defined(TRAINER_BATTERY_COMPARTMENT)
   if (mode == TRAINER_MODE_MASTER_BATTERY_COMPARTMENT)
     return false;

radio/src/targets/common/arm/stm32/bluetooth_driver.cpp

@@ -107,6 +107,12 @@ void bluetoothInit(uint32_t baudrate, bool enable)
 void bluetoothDisable()
 {
   GPIO_SetBits(BT_EN_GPIO, BT_EN_GPIO_PIN); // close bluetooth (recent modules will go to bootloader mode)
+  USART_ITConfig(BT_USART, USART_IT_RXNE, DISABLE);
+  GPIO_InitTypeDef GPIO_InitStructure;
+  GPIO_InitStructure.GPIO_Pin = BT_RX_GPIO_PIN;
+  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
+  GPIO_Init(BT_USART_GPIO, &GPIO_InitStructure);
+  USART_DeInit(BT_USART);
 }
 
 extern "C" void BT_USART_IRQHandler(void)

radio/src/targets/taranis/board.cpp

@@ -116,7 +116,7 @@ void boardInit()
                          BT_RCC_APB2Periph,
                          ENABLE);
 
-#if defined(BLUETOOTH)
+#if defined(BLUETOOTH) && !defined(PCBX9E)
   bluetoothInit(BLUETOOTH_DEFAULT_BAUDRATE, true);
 #endif