[Fix] the problem of startup failure.

bsp/raspberry-pico/drivers/board.c

@@ -45,11 +45,25 @@ uint32_t systick_config(uint32_t ticks)
 
 void rt_hw_board_init()
 {
+    rt_system_heap_init(heap, (uint8_t *)heap + sizeof(heap));
+
+    alarm_pool_init_default();
+
+    // Start and end points of the constructor list,
+    // defined by the linker script.
+    extern void (*__init_array_start)();
+    extern void (*__init_array_end)();
+
+    // Call each function in the list.
+    // We have to take the address of the symbols, as __init_array_start *is*
+    // the first function pointer, not the address of it.
+    for (void (**p)() = &__init_array_start; p < &__init_array_end; ++p) {
+        (*p)();
+    }
+
     /* Configure the SysTick */
     systick_config(frequency_count_khz(CLOCKS_FC0_SRC_VALUE_ROSC_CLKSRC)*10000/RT_TICK_PER_SECOND);
 
-    rt_system_heap_init(heap, (uint8_t *)heap + sizeof(heap));
-
     stdio_init_all();
     rt_hw_uart_init();
 

bsp/raspberry-pico/libraries/pico-sdk/src/rp2_common/pico_runtime/runtime.c

@@ -136,20 +136,6 @@ void runtime_init(void) {
 
     spin_locks_reset();
     irq_init_priorities();
-    alarm_pool_init_default();
-
-    // Start and end points of the constructor list,
-    // defined by the linker script.
-    extern void (*__init_array_start)();
-    extern void (*__init_array_end)();
-
-    // Call each function in the list.
-    // We have to take the address of the symbols, as __init_array_start *is*
-    // the first function pointer, not the address of it.
-    for (void (**p)() = &__init_array_start; p < &__init_array_end; ++p) {
-        (*p)();
-    }
-
 }
 
 void _exit(int status) {