main.cpp

00001 #include "mbed.h"
00002 #include "cmsis_os.h"
00003 
00004 #if defined(MBED_RTOS_SINGLE_THREAD)
00005   #error [NOT_SUPPORTED] test not supported
00006 #endif
00007 
00008 typedef struct {
00009   float    voltage; /* AD result of measured voltage */
00010   float    current; /* AD result of measured current */
00011   uint32_t counter; /* A counter value               */
00012 } mail_t;
00013 
00014 osMailQDef(mail_box, 16, mail_t);
00015 osMailQId  mail_box;
00016 
00017 void send_thread (void const *argument) {
00018     uint32_t i = 0;
00019     while (true) {
00020         i++; // fake data update
00021         mail_t *mail = (mail_t*)osMailAlloc(mail_box, osWaitForever);
00022         mail->voltage = (i * 0.1) * 33;
00023         mail->current = (i * 0.1) * 11;
00024         mail->counter = i;
00025         osMailPut(mail_box, mail);
00026         osDelay(1000);
00027     }
00028 }
00029 
00030 osThreadDef(send_thread, osPriorityNormal, DEFAULT_STACK_SIZE);
00031 
00032 int main (void) {
00033     mail_box = osMailCreate(osMailQ(mail_box), NULL);
00034     osThreadCreate(osThread(send_thread), NULL);
00035 
00036     while (true) {
00037         osEvent evt = osMailGet(mail_box, osWaitForever);
00038         if (evt.status == osEventMail) {
00039             mail_t *mail = (mail_t*)evt.value.p;
00040             printf("\nVoltage: %.2f V\n\r"   , mail->voltage);
00041             printf("Current: %.2f A\n\r"     , mail->current);
00042             printf("Number of cycles: %u\n\r", mail->counter);
00043 
00044             osMailFree(mail_box, mail);
00045         }
00046     }
00047 }