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cpu/cortexm_common: add NOP after WFI to avoid hardfault on stm32l152

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This commit is contained in:
Francisco Acosta 2018-02-07 23:36:10 +01:00
parent 368818aa23
commit ac9328381c
1 changed files with 4 additions and 0 deletions
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4
cpu/cortexm_common/include/cpu.h
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@ -107,6 +107,10 @@ static inline void cortexm_sleep(int deep)
unsigned state = irq_disable(); unsigned state = irq_disable();
__DSB(); __DSB();
__WFI(); __WFI();
#if defined(CPU_MODEL_STM32L152RE)
/* STM32L152RE crashes without this __NOP(). See #8518. */
__NOP();
#endif
irq_restore(state); irq_restore(state);
} }