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SmartMesh QSL for STM32F4 version
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Diff: dn_time.cpp
- Revision:
- 0:8ca1e814a851
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/dn_time.cpp Wed May 02 09:26:10 2018 +0000 @@ -0,0 +1,53 @@ +/* +Copyright (c) 2016, Dust Networks. All rights reserved. + +Port of the time module to the NUCLEO-L053R8. + +\license See attached DN_LICENSE.txt. +*/ + +#include "dn_time.h" +#include "mbed.h" +#include "millis.h" +#include "dn_debug.h" + +//=========================== defines ========================================= + + +//=========================== variables ======================================= + + +//=========================== prototypes ====================================== + + +//=========================== public ========================================== + +uint32_t dn_time_ms(void) +{ + /* + A simple library that utilize SysTick is used instead of the mbed Timer + class, as the latter is based on 32-bit microsecond counter and thus + overflows long before 32-bits of milliseconds are used. + */ + uint32_t ms = millis(); + return ms; +} + +void dn_sleep_ms(uint32_t milliseconds) +{ + /* + A simple delay is used for simplicity in this example. + To save power, we could instead have initialized a timer to fire an + interrupt after the set number of milliseconds, followed by entering + a low-power sleep mode. Upon wake up, we would have to check that we + were indeed woken by said interrupt (and e.g. not an USART interrupt) + to decide if we should go back to sleep or not. + */ + wait_ms(milliseconds); +} + +//=========================== private ========================================= + + +//=========================== helpers ========================================= +