Quick RPDelay fix (#409)

* Fixed occasional qspi init bug * Returned `RPDelay` to 16 * Updated changelog with `RPDelay` change
electro-smith · Oct 1, 2021 · 231629f · 231629f
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -9,6 +9,7 @@
 ### Bug fixes
 
 * qspi: fixed bug with GetData() that wouldn't return correct data when passed actual address instead of normalized offset (i.e. >= 0x90000000).
+* sdram: fixed occasional hard fault caused by `RPDelay`, which is now set to 16
 
 ### Other
 

diff --git a/src/dev/sdram.cpp b/src/dev/sdram.cpp
@@ -90,7 +90,7 @@ SdramHandle::Result SdramHandle::PeriphInit()
     SdramTiming.SelfRefreshTime      = 4;
     SdramTiming.RowCycleDelay        = 8; // started at 7
     SdramTiming.WriteRecoveryTime    = 3;
-    SdramTiming.RPDelay              = 1;
+    SdramTiming.RPDelay              = 16;
     SdramTiming.RCDDelay             = 10; // started at 2
     //    SdramTiming.LoadToActiveDelay = 16;
     //    SdramTiming.ExitSelfRefreshDelay = 16;