ARMmbed
/
mbed-os
mirror of https://github.com/ARMmbed/mbed-os.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Merge pull request #5328 from MikeDK/master 

equeue: add config option to use different timer classes
pull/5471/head
Martin Kojtal 2017-11-09 16:50:20 +00:00 committed by GitHub
parent 494c25d71c 23f2199e47
commit 555ae12111
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 23 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
events/equeue/equeue_mbed.cpp
View File

@ -23,27 +23,36 @@
#include <stdbool.h>
#include "mbed.h"
#if MBED_CONF_EVENTS_USE_LOWPOWER_TIMER_TICKER
#define ALIAS_TIMER LowPowerTimer
#define ALIAS_TICKER LowPowerTicker
#define ALIAS_TIMEOUT LowPowerTimeout
#else
#define ALIAS_TIMER Timer
#define ALIAS_TICKER Ticker
#define ALIAS_TIMEOUT Timeout
#endif
// Ticker operations
static bool equeue_tick_inited = false;
static volatile unsigned equeue_minutes = 0;
static unsigned equeue_timer[
(sizeof(Timer)+sizeof(unsigned)-1)/sizeof(unsigned)];
(sizeof(ALIAS_TIMER)+sizeof(unsigned)-1)/sizeof(unsigned)];
static unsigned equeue_ticker[
(sizeof(Ticker)+sizeof(unsigned)-1)/sizeof(unsigned)];
(sizeof(ALIAS_TICKER)+sizeof(unsigned)-1)/sizeof(unsigned)];
static void equeue_tick_update() {
equeue_minutes += reinterpret_cast<Timer*>(equeue_timer)->read_ms();
reinterpret_cast<Timer*>(equeue_timer)->reset();
equeue_minutes += reinterpret_cast<ALIAS_TIMER*>(equeue_timer)->read_ms();
reinterpret_cast<ALIAS_TIMER*>(equeue_timer)->reset();
}
static void equeue_tick_init() {
MBED_STATIC_ASSERT(sizeof(equeue_timer) >= sizeof(Timer),
MBED_STATIC_ASSERT(sizeof(equeue_timer) >= sizeof(ALIAS_TIMER),
"The equeue_timer buffer must fit the class Timer");
MBED_STATIC_ASSERT(sizeof(equeue_ticker) >= sizeof(Ticker),
MBED_STATIC_ASSERT(sizeof(equeue_ticker) >= sizeof(ALIAS_TICKER),
"The equeue_ticker buffer must fit the class Ticker");
Timer *timer = new (equeue_timer) Timer;
Ticker *ticker = new (equeue_ticker) Ticker;
ALIAS_TIMER *timer = new (equeue_timer) ALIAS_TIMER;
ALIAS_TICKER *ticker = new (equeue_ticker) ALIAS_TICKER;
equeue_minutes = 0;
timer->start();
@ -62,7 +71,7 @@ unsigned equeue_tick() {
do {
minutes = equeue_minutes;
ms = reinterpret_cast<Timer*>(equeue_timer)->read_ms();
ms = reinterpret_cast<ALIAS_TIMER*>(equeue_timer)->read_ms();
} while (minutes != equeue_minutes);
return minutes + ms;
@ -132,7 +141,7 @@ static void equeue_sema_timeout(equeue_sema_t *s) {
bool equeue_sema_wait(equeue_sema_t *s, int ms) {
int signal = 0;
Timeout timeout;
ALIAS_TIMEOUT timeout;
if (ms == 0) {
return false;
} else if (ms > 0) {

4
events/mbed_lib.json
View File

@ -21,6 +21,10 @@
"shared-highprio-eventsize": {
"help": "Event buffer size (bytes) for shared high-priority event queue",
"value": 256
},
"use-lowpower-timer-ticker": {
"help": "Enable use of low power timer and ticker classes. May reduce the accuracy of the event queue.",
"value": 0
}
}
}