[BSP] update MDK project file for STM32F4

bsp/stm32f40x/SConstruct

@@ -8,7 +8,12 @@ else:
     RTT_ROOT = os.path.normpath(os.getcwd() + '/../..')
 
 sys.path = sys.path + [os.path.join(RTT_ROOT, 'tools')]
-from building import *
+try:
+    from building import *
+except:
+    print 'Cannot found RT-Thread root directory, please check RTT_ROOT'
+    print RTT_ROOT
+    exit(-1)
 
 TARGET = 'rtthread-stm32f4xx.' + rtconfig.TARGET_EXT
 

bsp/stm32f40x/rtconfig.py

@@ -6,16 +6,16 @@ CPU='cortex-m4'
 CROSS_TOOL='keil'
 
 if os.getenv('RTT_CC'):
-	CROSS_TOOL = os.getenv('RTT_CC')
+    CROSS_TOOL = os.getenv('RTT_CC')
 
 # cross_tool provides the cross compiler
 # EXEC_PATH is the compiler execute path, for example, CodeSourcery, Keil MDK, IAR
 if  CROSS_TOOL == 'gcc':
-	PLATFORM 	= 'gcc'
-	EXEC_PATH 	= r'E:/Program Files/CodeSourcery/Sourcery G++ Lite/bin'
+    PLATFORM 	= 'gcc'
+    EXEC_PATH 	= r'E:/Program Files/CodeSourcery/Sourcery G++ Lite/bin'
 elif CROSS_TOOL == 'keil':
-	PLATFORM 	= 'armcc'
-	EXEC_PATH 	= r'C:/Keil'
+    PLATFORM 	= 'armcc'
+    EXEC_PATH 	= r'C:/Keil'
 elif CROSS_TOOL == 'iar':
     print '================ERROR============================'
     print 'Not support iar yet!'