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Api hal timebase: fix lptim lockups caused by flag clear outside of interrupt (#332)

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あく
2021-02-10 12:00:38 +03:00
committed by GitHub
parent 8b94eff7f9
commit 928bca4eaa
2 changed files with 17 additions and 3 deletions
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15
firmware/targets/f4/api-hal/api-hal-timebase.c
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@@ -11,6 +11,12 @@
#define API_HAL_TIMEBASE_TICK_PER_EPOCH (API_HAL_TIMEBASE_TIMER_MAX / API_HAL_TIMEBASE_CLK_PER_TICK)
#define API_HAL_TIMEBASE_MAX_SLEEP (API_HAL_TIMEBASE_TICK_PER_EPOCH - 1)
#ifdef API_HAL_TIMEBASE_DEBUG
#include <stm32wbxx_ll_gpio.h>
#define LED_GREEN_PORT GPIOA
#define LED_GREEN_PIN LL_GPIO_PIN_2
#endif
typedef struct {
// Sleep control
volatile uint16_t insomnia;
@@ -98,7 +104,13 @@ static inline uint32_t api_hal_timebase_sleep(TickType_t expected_idle_ticks) {
HAL_SuspendTick();
// Go to stop2 mode
#ifdef API_HAL_TIMEBASE_DEBUG
LL_GPIO_SetOutputPin(LED_GREEN_PORT, LED_GREEN_PIN);
#endif
api_hal_power_deep_sleep();
#ifdef API_HAL_TIMEBASE_DEBUG
LL_GPIO_ResetOutputPin(LED_GREEN_PORT, LED_GREEN_PIN);
#endif
HAL_ResumeTick();
@@ -111,10 +123,7 @@ static inline uint32_t api_hal_timebase_sleep(TickType_t expected_idle_ticks) {
// Store and clear interrupt flags
// we don't want handler to be called after renabling IRQ
bool cmpm_flag = LL_LPTIM_IsActiveFlag_CMPM(API_HAL_TIMEBASE_TIMER);
if (cmpm_flag) LL_LPTIM_ClearFLAG_CMPM(API_HAL_TIMEBASE_TIMER);
bool arrm_flag = LL_LPTIM_IsActiveFlag_ARRM(API_HAL_TIMEBASE_TIMER);
if (arrm_flag) LL_LPTIM_ClearFLAG_ARRM(API_HAL_TIMEBASE_TIMER);
// Calculate and set next wakeup compare value
const uint16_t next_cmp = (after_tick + 1) * API_HAL_TIMEBASE_CLK_PER_TICK;