Diff: libraries/tests/rtos/cmsis/mail/main.cpp

Revision:

0:6c56fb4bc5f0

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libraries/tests/rtos/cmsis/mail/main.cpp	Fri Nov 04 20:27:58 2016 +0000
@@ -0,0 +1,47 @@
+#include "mbed.h"
+#include "cmsis_os.h"
+
+#if defined(MBED_RTOS_SINGLE_THREAD)
+  #error [NOT_SUPPORTED] test not supported
+#endif
+
+typedef struct {
+  float    voltage; /* AD result of measured voltage */
+  float    current; /* AD result of measured current */
+  uint32_t counter; /* A counter value               */
+} mail_t;
+
+osMailQDef(mail_box, 16, mail_t);
+osMailQId  mail_box;
+
+void send_thread (void const *argument) {
+    uint32_t i = 0;
+    while (true) {
+        i++; // fake data update
+        mail_t *mail = (mail_t*)osMailAlloc(mail_box, osWaitForever);
+        mail->voltage = (i * 0.1) * 33;
+        mail->current = (i * 0.1) * 11;
+        mail->counter = i;
+        osMailPut(mail_box, mail);
+        osDelay(1000);
+    }
+}
+
+osThreadDef(send_thread, osPriorityNormal, DEFAULT_STACK_SIZE);
+
+int main (void) {
+    mail_box = osMailCreate(osMailQ(mail_box), NULL);
+    osThreadCreate(osThread(send_thread), NULL);
+
+    while (true) {
+        osEvent evt = osMailGet(mail_box, osWaitForever);
+        if (evt.status == osEventMail) {
+            mail_t *mail = (mail_t*)evt.value.p;
+            printf("\nVoltage: %.2f V\n\r"   , mail->voltage);
+            printf("Current: %.2f A\n\r"     , mail->current);
+            printf("Number of cycles: %u\n\r", mail->counter);
+
+            osMailFree(mail_box, mail);
+        }
+    }
+}