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Make HAL & US tickers idle safe

pull/4808/head
Wolfgang Betz 2017-07-25 11:30:05 +02:00
parent 953b9250f1
commit e2dc67750c
1 changed files with 13 additions and 1 deletions
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14
targets/TARGET_STM/sleep.c
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@ -34,23 +34,32 @@
#include "sleep_api.h" #include "sleep_api.h"
#include "rtc_api_hal.h" #include "rtc_api_hal.h"
#include "hal_tick.h" #include "hal_tick.h"
#include "mbed_critical.h"
extern void HAL_SuspendTick(void); extern void HAL_SuspendTick(void);
extern void HAL_ResumeTick(void); extern void HAL_ResumeTick(void);
void hal_sleep(void) void hal_sleep(void)
{ {
// Disable IRQs
core_util_critical_section_enter();
// Stop HAL tick to avoid to exit sleep in 1ms // Stop HAL tick to avoid to exit sleep in 1ms
HAL_SuspendTick(); HAL_SuspendTick();
// Request to enter SLEEP mode // Request to enter SLEEP mode
HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI); HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);
// Restart HAL tick // Restart HAL tick
HAL_ResumeTick(); HAL_ResumeTick();
// Enable IRQs
core_util_critical_section_exit();
} }
void hal_deepsleep(void) void hal_deepsleep(void)
{ {
// Disable IRQs
core_util_critical_section_enter();
// Stop HAL tick // Stop HAL tick
HAL_SuspendTick(); HAL_SuspendTick();
uint32_t EnterTimeUS = us_ticker_read(); uint32_t EnterTimeUS = us_ticker_read();
@ -82,6 +91,9 @@ void hal_deepsleep(void)
// Restart HAL tick // Restart HAL tick
HAL_ResumeTick(); HAL_ResumeTick();
// Enable IRQs
core_util_critical_section_exit();
// After wake-up from STOP reconfigure the PLL // After wake-up from STOP reconfigure the PLL
SetSysClock(); SetSysClock();