[MP1] Add basic #define in cores/arduino/stm32

Author: kbumsik

cores/arduino/stm32/stm32_def.h

@@ -46,6 +46,8 @@
 #include "stm32l1xx.h"
 #elif defined(STM32L4xx)
 #include "stm32l4xx.h"
+#elif defined(STM32MP1xx)
+#include "stm32mp1xx.h"
 #elif defined(STM32WBxx)
 #include "stm32wbxx.h"
 #else

cores/arduino/stm32/stm32_def_build.h

@@ -346,6 +346,8 @@
 #define CMSIS_STARTUP_FILE "startup_stm32l4s7xx.s"
 #elif defined(STM32L4S9xx)
 #define CMSIS_STARTUP_FILE "startup_stm32l4s9xx.s"
+#elif defined(STM32MP1xx)
+#define CMSIS_STARTUP_FILE "startup_stm32mp15xx.s"
 #elif defined(STM32WB50xx)
 #define CMSIS_STARTUP_FILE "startup_stm32wb50xx_cm4.s"
 #elif defined(STM32WB55xx)

cores/arduino/stm32/system_stm32yyxx.c

@@ -34,6 +34,9 @@
 #ifdef STM32L4xx
 #include "system_stm32l4xx.c"
 #endif
+#ifdef STM32MP1xx
+#include "system_stm32mp1xx.c"
+#endif
 #ifdef STM32WBxx
 #include "system_stm32wbxx.c"
 #endif