本帖最后由 lulugl 于 2023-4-6 06:40 编辑
在文档 RM0490 Reference manual 《STM32C0x1 advanced Arm®-based 32-bit MCUs》手册中22.5中手册描述RTC 中断是不能唤醒 standby或者shutdown的：
早上又阅读了文档UM3029《 Description of STM32C0 HAL and low-layer drivers》其中第274页有说明：
Standby mode
• Entry:
– The Standby mode is entered through HAL_PWR_EnterSTANDBYMode() API, by setting SLEEPDEEP
in Cortex control register.
• Exit:
– WKUP pin edge detection, RTC event (alarm, timestamp), LSE CSS detection, reset on NRST pin,
IWDG reset & BOR reset.
Exiting Standby generates a power reset: Cortex is reset and execute Reset handler vector, all registers in the
Vcore domain are set to their reset value. Registers outside the VCORE domain (RTC, WKUP, IWDG, and
Standby/Shutdown modes control) are not impacted.
Shutdown mode
In Shutdown mode, voltage regulator is disabled, all clocks are off except LSE, RRS bit is cleared. SRAM and
registers contents are lost except for backup domain registers.
• Entry:
– The Shutdown mode is entered through HAL_PWREx_EnterSHUTDOWNMode() API, by setting
SLEEPDEEP in Cortex control register.
• Exit:
– WKUP pin edge detection, RTC event (alarm, timestamp), LSE CSS detection, reset on NRST pin.
Exiting Shutdown generates a brown out reset: Cortex is reset and execute Reset handler vector, all registers are
set to their reset value but ones in backup domain.
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