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ST: Watchdog: Fix timeout registers value calculation #11178

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Merged
merged 1 commit into from
Aug 20, 2019
Merged

ST: Watchdog: Fix timeout registers value calculation #11178

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2 changes: 1 addition & 1 deletion targets/TARGET_STM/watchdog_api.c
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Original file line number Diff line number Diff line change
Expand Up @@ -39,7 +39,7 @@
// Convert Prescaler_divider bits (PR) of Prescaler_register (IWDG_PR) and a timeout value [ms]
// to Watchdog_counter_reload_value bits (RL) of Reload_register (IWDG_RLR)
#define PR_TIMEOUT_MS2RL(PR_BITS, TIMEOUT_MS) \
((TIMEOUT_MS) * (LSI_VALUE) / (PR2PRESCALER_DIV(PR_BITS)) / 1000UL)
(((TIMEOUT_MS) * (LSI_VALUE) / (PR2PRESCALER_DIV(PR_BITS)) + 999UL) / 1000UL)

#define MAX_TIMEOUT_MS_UINT64 PR_RL2UINT64_TIMEOUT_MS(MAX_IWDG_PR, MAX_IWDG_RL)
#if (MAX_TIMEOUT_MS_UINT64 > UINT32_MAX)
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