core: uart: enable EXTI wakeup interrupt if defined

fpistm · fpistm · commit d198cba95c15 · 2021-07-05T16:01:57.000+02:00
Need to be defined for some MCU to be able to wakeup from
STOP mode.

Example for WL55JCI to wake up from LPUART1:
#define UART_WAKEUP_EXTI_LINE LL_EXTI_LINE_28

Signed-off-by: Frederic Pillon &lt;frederic.pillon@st.com&gt;
diff --git a/libraries/SrcWrapper/src/stm32/uart.c b/libraries/SrcWrapper/src/stm32/uart.c
@@ -603,6 +603,10 @@ void uart_config_lowpower(serial_t *obj)
       break;
 #endif
   }
+#if defined(UART_WAKEUP_EXTI_LINE)
+  /* Enable EXTI wakeup interrupt if defined */
+  LL_EXTI_EnableIT_0_31(UART_WAKEUP_EXTI_LINE);
+#endif
   hsem_unlock(CFG_HW_RCC_CRRCR_CCIPR_SEMID);
 }
 #endif

Original file line number	Diff line number	Diff line change
`@@ -603,6 +603,10 @@ void uart_config_lowpower(serial_t *obj)`
`603`	`603`	`break;`
`604`	`604`	`#endif`
`605`	`605`	`}`
	`606`	`+#if defined(UART_WAKEUP_EXTI_LINE)`
	`607`	`+ /* Enable EXTI wakeup interrupt if defined */`
	`608`	`+ LL_EXTI_EnableIT_0_31(UART_WAKEUP_EXTI_LINE);`
	`609`	`+#endif`
`606`	`610`	`hsem_unlock(CFG_HW_RCC_CRRCR_CCIPR_SEMID);`
`607`	`611`	`}`
`608`	`612`	`#endif`