fix(Makefile): compile for card10 by default

bootloader/Makefile

@@ -53,7 +53,8 @@ COMPILER=GCC
 
 # Specify the board used
 ifeq "$(BOARD)" ""
-BOARD=EvKit_V1
+#BOARD=EvKit_V1
+BOARD=card10
 endif
 
 # This is the path to the CMSIS root directory

sdk/Libraries/Boards/card10/Source/board.c

@@ -103,7 +103,8 @@ int Board_Init(void)
         {PORT_0, PIN_31, GPIO_FUNC_OUT, GPIO_PAD_NONE},     // ECG switch
     };
     const unsigned int num_pins = (sizeof(pins) / sizeof(gpio_cfg_t));
-    for (int i = 0; i < num_pins; i++) {
+    int i;
+    for (i = 0; i < num_pins; i++) {
         GPIO_OutClr(&pins[i]);
         GPIO_Config(&pins[i]);
     }

testapp/Makefile

@@ -53,7 +53,8 @@ COMPILER=GCC
 
 # Specify the board used
 ifeq "$(BOARD)" ""
-BOARD=EvKit_V1
+#BOARD=EvKit_V1
+BOARD=card10
 endif
 
 # This is the path to the CMSIS root directory