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stm32/powerctrl: Disable IRQs during stop mode to allow reconfig on wake

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Damien George
2018-11-28 12:44:54 +11:00
parent 66ca8e9b2c
commit afd1ce0c15
1 changed files with 7 additions and 0 deletions
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7
ports/stm32/powerctrl.c
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@@ -260,6 +260,10 @@ set_clk:
#endif
void powerctrl_enter_stop_mode(void) {
// Disable IRQs so that the IRQ that wakes the device from stop mode is not
// executed until after the clocks are reconfigured
uint32_t irq_state = disable_irq();
#if defined(STM32L4)
// Configure the MSI as the clock source after waking up
__HAL_RCC_WAKEUPSTOP_CLK_CONFIG(RCC_STOP_WAKEUPCLOCK_MSI);
@@ -331,6 +335,9 @@ void powerctrl_enter_stop_mode(void) {
#endif
#endif
// Enable IRQs now that all clocks are reconfigured
enable_irq(irq_state);
}
#if !defined(STM32L4)