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mbedtls: Use LowPowerTimeout for mbedtls_set_alarm() if available 

The function `mbedtls_set_alarm()` is only precise to seconds, so
`LowPowerTimeout` is enough and saves power.
pull/14772/head
Lingkai Dong 2021-06-14 14:49:31 +01:00
parent e16f59a2ee
commit ca719a96a8
1 changed files with 8 additions and 0 deletions
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8
connectivity/mbedtls/platform/src/timing_mbed.cpp
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@ -29,6 +29,7 @@
#include "mbedtls/timing.h" #include "mbedtls/timing.h"
#include "drivers/Timeout.h" #include "drivers/Timeout.h"
#include "drivers/LowPowerTimeout.h"
#include "drivers/Timer.h" #include "drivers/Timer.h"
#include "drivers/LowPowerTimer.h" #include "drivers/LowPowerTimer.h"
#include <chrono> #include <chrono>
@ -44,7 +45,14 @@ static void handle_alarm(void)
extern "C" void mbedtls_set_alarm(int seconds) extern "C" void mbedtls_set_alarm(int seconds)
{ {
#if DEVICE_LPTICKER
static mbed::LowPowerTimeout t;
#elif DEVICE_USTICKER
static mbed::Timeout t; static mbed::Timeout t;
#else
#error "MBEDTLS_TIMING_C requires either LPTICKER or USTICKER"
#endif
mbedtls_timing_alarmed = 0; mbedtls_timing_alarmed = 0;
t.attach(handle_alarm, std::chrono::seconds(seconds)); t.attach(handle_alarm, std::chrono::seconds(seconds));