Merge pull request #2 from doesnotcompete/main

Novakov · web-flow · commit 0779932c2bd6 · 2024-01-12T07:42:45.000+01:00
Unlock DWT register
diff --git a/libs/trace/include/orbcode/trace/dwt.h b/libs/trace/include/orbcode/trace/dwt.h
@@ -197,6 +197,7 @@ extern "C"
     void DWTSetup(const DWTOptions* options)
     {
         CoreDebug->DEMCR |= CoreDebug_DEMCR_TRCENA_Msk; // Enable ITM and DWT
+        DWT->LAR = 0xC5ACCE55;                          // Unlock DWT access via magic number
 
         uint32_t ctrl = 0;
         ctrl |= (options->FoldedInstructionCounterEvent ? 1 : 0) << DWT_CTRL_FOLDEVTENA_Pos;
@@ -265,4 +266,4 @@ extern "C"
 
 #ifdef __cplusplus
 }
-#endif
+#endif

Original file line number	Diff line number	Diff line change
`@@ -197,6 +197,7 @@ extern "C"`
`197`	`197`	`void DWTSetup(const DWTOptions* options)`
`198`	`198`	`{`
`199`	`199`	`CoreDebug->DEMCR \|= CoreDebug_DEMCR_TRCENA_Msk; // Enable ITM and DWT`
	`200`	`+ DWT->LAR = 0xC5ACCE55; // Unlock DWT access via magic number`
`200`	`201`
`201`	`202`	`uint32_t ctrl = 0;`
`202`	`203`	`ctrl \|= (options->FoldedInstructionCounterEvent ? 1 : 0) << DWT_CTRL_FOLDEVTENA_Pos;`
`@@ -265,4 +266,4 @@ extern "C"`
`265`	`266`
`266`	`267`	`#ifdef __cplusplus`
`267`	`268`	`}`
`268`		`-#endif`
	`269`	`+#endif`