STMicroelectronics STM32100B-EVAL, Руководство пользователя

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Running the demonstration UM0891
32/48 Doc ID 16982 Rev 1
Note: If an RTC Alarm is generated while the MCU is in Stop mode and the message shown in
Figure 40 is displayed (which means that the Key push-button needs to be pressed to exit
the Stop mode), the RTC Alarm causes the MCU to exit Stop mode. The message shown in
Figure 41 is then displayed.
Figure 41. RTC Alarm causes the MCU to exit the Stop mode
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In the second case, the RTC Alarm wakes up the MCU from Stop mode after the
programmed time has elapsed. When selecting this submenu, you have to set the
alarm to the time when the MCU is to exit Stop mode. To set the wakeup time, follow
the procedure explained in section
Time submenu .
Figure 42. Setting the wakeup time
Once the alarm has been configured, the red LEDs stop blinking and the system enters
Stop mode. The message shown in
Figure 43 is displayed on the LCD.
Figure 43. RTC Alarm wakeup configured
Stop Mode
Wakeup by RTC Alarm
continue...
Press joystick to
HH:MM:SS
MCU in Stop Mode
Wait For RTC Alarm