add initial labs

labs/lab_w2/main.c

@@ -0,0 +1,46 @@
+#include <stdio.h>
+
+#include "msp.h"
+#include "Clock.h"
+
+
+void systick_init(void) {
+    
+    SysTick->LOAD = 0x00FFFFFF;
+    SysTick->CTRL = 0x00000005;
+}
+
+void systick_wait1ms() {
+    SysTick->LOAD = 48000;
+    SysTick->VAL = 0;
+    while((SysTick->CTRL & 0x00010000) == 0) {}
+}
+
+void systick_wait1s() {
+    int i;
+    int count = 1000;
+    for(i=0;i<count;i++) {
+        systick_wait1ms();
+    }
+}
+
+/**
+ * main.c
+ */
+void main(void)
+{
+	Clock_Init48MHz();
+	printf("init started\n");
+	P2->SEL0 &= ~0x07;
+	P2->SEL1 &= ~0x07;
+	P2->DIR |= 0x07;
+	P2->OUT &= ~0x07;
+
+	printf("init end\n");
+
+	    P2->OUT |= 0b00000111;
+	    Clock_Delay1ms(10000);
+
+
+
+}