import mbed rtos library

1 files changed, 34 insertions, 0 deletions

diff --git a/projects/rtos-test/semaphore-test.c b/projects/rtos-test/semaphore-test.c
new file mode 100644
index 0000000..3a3b5de
--- /dev/null
+++ b/projects/rtos-test/semaphore-test.c
@@ -0,0 +1,34 @@
+#include "cmsis_os.h"
+
+#include "stm-init.h"
+#include "stm-uart.h"
+
+osSemaphoreId two_slots;
+osSemaphoreDef(two_slots);
+
+void test_thread(void const *name) {
+    while (1) {
+        osSemaphoreWait(two_slots, osWaitForever);
+        //printf("%s\n\r", (const char*)name);
+        uart_send_string((const char*)name);
+        uart_send_string("\r\n");
+        osDelay(1000);
+        osSemaphoreRelease(two_slots);
+    }
+}
+
+void t2(void const *argument) {test_thread("Th 2");}
+osThreadDef(t2, osPriorityNormal, DEFAULT_STACK_SIZE);
+
+void t3(void const *argument) {test_thread("Th 3");}
+osThreadDef(t3, osPriorityNormal, DEFAULT_STACK_SIZE);
+
+int main (void) {
+    stm_init();
+    two_slots = osSemaphoreCreate(osSemaphore(two_slots), 2);
+
+    osThreadCreate(osThread(t2), NULL);
+    osThreadCreate(osThread(t3), NULL);
+
+    test_thread((void *)"Th 1");
+}