enable generic bootloader

Author: mean

Platform/Initialization/DefaultCFlagsStm32.cmake

@@ -8,7 +8,7 @@ ENDIF(NOT DEFINED ARDUINO_UPLOAD_METHOD)
 IF(NOT DEFINED ARDUINO_CFLAGS_SET)
     SET(DEFINED ARDUINO_CFLAGS_SET 1)
     SET(ARDUINO_DEFAULT_CFLAGS " -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500  -w   -mcpu=cortex-m3  -mthumb   -g ")
-    SET(ARDUINO_DEFAULT_CFLAGS " ${ARDUINO_DEFAULT_CFLAGS}  -DF_CPU=72000000L  -DARDUINO_ARCH_STM32F1 -DCONFIG_MAPLE_MINI_NO_DISABLE_DEBUG    ")
+    SET(ARDUINO_DEFAULT_CFLAGS " ${ARDUINO_DEFAULT_CFLAGS}  -DGENERIC_BOOTLOADER -DF_CPU=72000000L  -DARDUINO_ARCH_STM32F1 -DCONFIG_MAPLE_MINI_NO_DISABLE_DEBUG    ")
     #SET(ARDUINO_DEFAULT_CFLAGS " ${ARDUINO_DEFAULT_CFLAGS}  -DF_CPU=72000000L  -DARDUINO_ARCH_STM32F1 ")
 
     SET(ARDUINO_DEFAULT_CXXFLAGS "${ARDUINO_DEFAULT_CFLAGS} -fno-rtti  -fno-exceptions -std=gnu++11   -Werror=return-type")