[Nucleo F030R8] Disable Serial1 by default

To save RAM space, Serial1 is disabled by default.
To enable Serial1 (USART1 on PA10, PA9) add -DENABLE_SERIAL1
Thanks @RickKimball

Signed-off-by: Frederic Pillon <[email protected]>

Author: fpistm

boards.txt

@@ -86,6 +86,7 @@ Nucleo_64.menu.Nucleo_64_board.NUCLEO_F030R8.build.board=NUCLEO_F030R8
 Nucleo_64.menu.Nucleo_64_board.NUCLEO_F030R8.build.series=STM32F0xx
 Nucleo_64.menu.Nucleo_64_board.NUCLEO_F030R8.build.variant=NUCLEO_F030R8
 Nucleo_64.menu.Nucleo_64_board.NUCLEO_F030R8.build.cmsis_lib_gcc=arm_cortexM0l_math
+#To enable Serial1 (USART1 on PA10, PA9) add -DENABLE_SERIAL1
 Nucleo_64.menu.Nucleo_64_board.NUCLEO_F030R8.build.extra_flags=-DSTM32F030x8
 
 # NUCLEO_F303RE board

variants/NUCLEO_F030R8/variant.cpp

@@ -94,19 +94,25 @@ const PinName digital_arduino[] = {
  * UART objects
  */
 HardwareSerial  Serial(PA3, PA2); //Connected to ST-Link
+#ifdef ENABLE_SERIAL1
 HardwareSerial  Serial1(PA10, PA9);
+#endif
 
 // Need rework to be generic
 
 void serialEvent() __attribute__((weak));
 void serialEvent() { }
+#ifdef ENABLE_SERIAL1
 void serialEvent1() __attribute__((weak));
 void serialEvent1() { }
+#endif
 
 void serialEventRun(void)
 {
   if (Serial.available()) serialEvent();
+#ifdef ENABLE_SERIAL1
   if (Serial1.available()) serialEvent1();
+#endif
 }
 
 // ----------------------------------------------------------------------------