timer.cpp

00001 /**
00002  * @file timer.c
00003  * @brief mbed-os implementation of the timer interface needed for AWS.
00004  */
00005 #ifdef __cplusplus
00006 extern "C" {
00007 #endif
00008 
00009 #include <stddef.h>
00010 #include "timer_interface.h"
00011 
00012 TimerExt::TimerExt() : mbed::Timer(){
00013 
00014 }
00015 
00016 bool has_timer_expired(TimerAWS* timer) {
00017     return (timer->read_ms() > timer->timeout_ms);
00018 }
00019 
00020 void countdown_ms(TimerAWS *timer, uint32_t timeout) {
00021     timer->timeout_ms = timeout;
00022     timer->reset();
00023     timer->start();
00024 }
00025 
00026 void countdown_sec(TimerAWS *timer, uint32_t timeout) {
00027     timer->timeout_ms = (timeout * 1000);
00028     timer->reset();
00029     timer->start();
00030 }
00031 
00032 uint32_t left_ms(TimerAWS* timer) {
00033     if (timer->read_ms() < timer->timeout_ms)
00034         return (timer->timeout_ms - timer->read_ms());
00035     return 0;
00036 }
00037 
00038 void init_timer(TimerAWS * timer){
00039     timer->stop();
00040     timer->reset();
00041     timer->timeout_ms = 0;
00042 }
00043 #ifdef __cplusplus
00044 }
00045 #endif