Roy_01pwr_sleep_mode
This example is used to enter power mode and wake-up system
- In normal mode, it will toggle I/O to notify user
- Use Button to enter/leave power-mode function
When measure the electric current, user should remove all external device links
External device e.g. ICE, log message device (UART), LA (Logic Analyzer), ...etc.
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Sleep/Deepsleep mode
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Sleep mode
// at main.c (Use sleep mode) #define CONFIG_USE_SLEEP_MODE 1 -
Deep-Sleep mode
// at main.c (Use deep-sleep mode) #define CONFIG_USE_SLEEP_MODE 0
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The I/O selection of Button
// at main.c /* Input Key I/O definitions */ #define CONFIG_GPIO_INPUT_PORTx GPIOA #define CONFIG_GPIO_INPUT_PINx GPIO_Pin_03 #define CONFIG_GPIO_INPUT_IRQ GPIOA_IRQn -
The toggled I/O selection
// at main.c /* Toggle I/O when normal App executing */ #define CONFIG_IO_TOGGLE_PORTx GPIOA #define CONFIG_IO_TOGGLE_PINx GPIO_Pin_02 -
Wake-up modules selection
- The I/O wake-up case will provide the
minimum currentwhen deep-sleep mode - The LpTIM/WDG cases will provide the
lower currentwhen deep-sleep mode
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I/O wake-up
// at main.c /** * The target module to wake-up system * + I/O wake-up case is ultra-low power in DeepSleep mode * + LpTIM/WDG wake-up cases are low power in DeepSleep mode */ #define CONFIG_USE_IO_WAKEUP 1 #define CONFIG_USE_LPTIN_WAKEUP 0 #define CONFIG_USE_WDG_WAKEUP 0 -
LpTIM wake-up
// at main.c /** * The target module to wake-up system * + I/O wake-up case is ultra-low power in DeepSleep mode * + LpTIM/WDG wake-up cases are low power in DeepSleep mode */ #define CONFIG_USE_IO_WAKEUP 0 #define CONFIG_USE_LPTIN_WAKEUP 1 #define CONFIG_USE_WDG_WAKEUP 0 -
WDG wake-up
// at main.c /** * The target module to wake-up system * + I/O wake-up case is ultra-low power in DeepSleep mode * + LpTIM/WDG wake-up cases are low power in DeepSleep mode */ #define CONFIG_USE_IO_WAKEUP 0 #define CONFIG_USE_LPTIN_WAKEUP 0 #define CONFIG_USE_WDG_WAKEUP 1
- The I/O wake-up case will provide the
Log
Use serial port with baudrate 115200, 8bit, no parity check.
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Sleep mode
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I/O wake-up
[2025-11-21 16:54:01.215] Nov 19 2025 16:53:58 [2025-11-21 16:54:01.215] This is an example of Power-Mode (Sleep) and wake-up with I/O [2025-11-21 16:54:01.220] Button = PA3 [2025-11-21 16:54:01.224] Output I/O = PA2 [2025-11-21 16:54:05.020] -> enter sleep [2025-11-21 16:54:05.020] _Pre_Proc <--- manually trigger to enter sleep mode [2025-11-21 16:54:06.462] Output I/O = PA2 <--- manually trigger to leave sleep mode [2025-11-21 16:54:06.462] _Post_Proc [2025-11-21 16:54:06.464] @ Entered None ISR <--- Never enter ISR [2025-11-21 16:54:06.464] <- wake-up [2025-11-21 16:54:06.466] -
LpTIM wake-up
Configure 5 sec wake-up with LpTIM
[2025-11-21 16:47:15.315] Nov 19 2025 16:47:12 [2025-11-21 16:47:15.315] This is an example of Power-Mode (Sleep) and wake-up with LpTIM [2025-11-21 16:47:15.321] Button = PA3 [2025-11-21 16:47:15.324] Output I/O = PA2 [2025-11-21 16:47:19.546] -> enter sleep [2025-11-21 16:47:19.546] _Pre_Proc <--- enter sleep mode [2025-11-21 16:48:26.635] Output I/O = PA2 <--- wake-up with LpTIM [2025-11-21 16:48:26.635] _Post_Proc [2025-11-21 16:48:26.637] @ Entered LpTim ISR <--- enter ISR [2025-11-21 16:48:26.637] <- wake-up [2025-11-21 16:48:26.639] -
WDG wake-up
Configure 1 sec wake-up with WatchDog
[2025-11-21 16:36:30.876] Nov 19 2025 16:35:58 [2025-11-21 16:36:30.876] This is an example of Power-Mode (Sleep) and wake-up with WatchDog [2025-11-21 16:36:30.881] Button = PA3 [2025-11-21 16:36:30.881] Output I/O = PA2 [2025-11-21 16:36:34.050] -> enter sleep [2025-11-21 16:36:34.050] _Pre_Proc <--- enter sleep mode [2025-11-21 16:36:35.098] Output I/O = PA2 <--- wake-up with WDG [2025-11-21 16:36:35.098] _Post_Proc [2025-11-21 16:36:35.101] @ Entered None ISR <--- Never enter ISR [2025-11-21 16:36:35.101] <- wake-up [2025-11-21 16:36:35.102]
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Deepsleep
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I/O wake-up
[2025-11-21 16:44:10.823] Nov 19 2025 16:44:07 [2025-11-21 16:44:10.823] This is an example of Power-Mode (DeepSleep) and wake-up with I/O [2025-11-21 16:44:10.828] Button = PA3 [2025-11-21 16:44:10.838] Output I/O = PA2 [2025-11-21 16:44:13.727] -> enter deepsleep [2025-11-21 16:44:13.727] _Pre_Proc <--- manually trigger to enter deepsleep mode [2025-11-21 16:44:16.085] Output I/O = PA2 <--- manually trigger to leave deepsleep mode [2025-11-21 16:44:16.085] _Post_Proc [2025-11-21 16:44:16.085] @ Entered None ISR <--- Never enter ISR [2025-11-21 16:44:16.085] <- wake-up [2025-11-21 16:44:16.085] -
LpTIM wake-up
Configure 5 sec wake-up with LpTIM
[2025-11-21 16:40:38.170] Nov 19 2025 16:40:34 [2025-11-21 16:40:38.170] This is an example of Power-Mode (DeepSleep) and wake-up with LpTIM [2025-11-21 16:40:38.179] Button = PA3 [2025-11-21 16:40:38.179] Output I/O = PA2 [2025-11-21 16:40:41.607] -> enter deepsleep [2025-11-21 16:40:41.607] _Pre_Proc <--- enter deepsleep mode [2025-11-21 16:40:46.789] Output I/O = PA2 <--- wake-up with LpTIM [2025-11-21 16:40:46.789] _Post_Proc [2025-11-21 16:40:46.791] @ Entered LpTim ISR <--- enter ISR [2025-11-21 16:40:46.792] <- wake-up [2025-11-21 16:40:46.793] -
WDG wake-up
Configure 1 sec wake-up with WatchDog
[2025-11-21 16:38:56.627] Nov 19 2025 16:38:53 [2025-11-21 16:38:56.627] This is an example of Power-Mode (DeepSleep) and wake-up with WatchDog [2025-11-21 16:38:56.635] Button = PA3 [2025-11-21 16:38:56.635] Output I/O = PA2 [2025-11-21 16:38:59.874] -> enter deepsleep [2025-11-21 16:38:59.874] _Pre_Proc <--- enter deepsleep mode [2025-11-21 16:39:00.911] Output I/O = PA2 <--- wake-up with WDG [2025-11-21 16:39:00.911] _Post_Proc [2025-11-21 16:39:00.914] @ Entered None ISR <--- Never enter ISR [2025-11-21 16:39:00.914] <- wake-up [2025-11-21 16:39:00.914]
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