Blocks standbyMode() if connected to SerialUSB

GabrielNotman · GabrielNotman · commit c8ebd8a9a8d0 · 2015-11-23T21:46:38.000Z
Entering sleep mode when connected to the native
USB port causes issues (USB device errors).
diff --git a/src/RTCZero.cpp b/src/RTCZero.cpp
@@ -108,8 +108,12 @@ void RTCZero::detachInterrupt()
 
 void RTCZero::standbyMode()
 {
-	SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
-  __WFI();
+  // Entering standby mode when connected
+  // via the native USB port causes issues
+  if (!SerialUSB) {
+    SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
+    __WFI();
+  }
 }
 
 /*

Original file line number	Diff line number	Diff line change
`@@ -108,8 +108,12 @@ void RTCZero::detachInterrupt()`
`108`	`108`
`109`	`109`	`void RTCZero::standbyMode()`
`110`	`110`	`{`
`111`		`- SCB->SCR \|= SCB_SCR_SLEEPDEEP_Msk;`
`112`		`- __WFI();`
	`111`	`+ // Entering standby mode when connected`
	`112`	`+ // via the native USB port causes issues`
	`113`	`+ if (!SerialUSB) {`
	`114`	`+ SCB->SCR \|= SCB_SCR_SLEEPDEEP_Msk;`
	`115`	`+ __WFI();`
	`116`	`+ }`
`113`	`117`	`}`
`114`	`118`
`115`	`119`	`/*`