first commit for opensource

first commit for opensource

doc/code/2.5 time/main.c

@@ -0,0 +1,42 @@
+#include "tos.h"
+#include "mcu_init.h"
+
+#define STK_SIZE_TASK_DEMO      512
+
+k_stack_t stack_task_demo[STK_SIZE_TASK_DEMO];
+
+k_task_t task_demo;
+
+extern void entry_task_demo(void *arg);
+
+void entry_task_demo(void *arg)
+{
+    k_time_t ms;
+    k_tick_t systick, after_systick;
+
+    systick = tos_millisec2tick(2000);
+    printf("%d millisec equals to %lld ticks\n", 2000, systick);
+
+    ms = tos_tick2millisec(1000);
+    printf("%lld ticks equals to %d millisec\n", (k_tick_t)1000, ms);
+
+    systick = tos_systick_get();
+    printf("before sleep, systick is %lld\n", systick);
+
+    tos_sleep_ms(2000);
+
+    after_systick = tos_systick_get();
+    printf("after sleep %d ms, systick is %lld\n", 2000, after_systick);
+
+    printf("milliseconds sleep is about: %d\n", tos_tick2millisec(after_systick - systick));
+}
+
+int main(void)
+{
+    board_init();
+    tos_knl_init();
+    (void)tos_task_create(&task_demo, "receiver_higher_prio", entry_task_demo, NULL,
+                            4, stack_task_demo, STK_SIZE_TASK_DEMO, 0);
+    tos_knl_start();
+}
+