From e695543ca6226f54b10c7f387b9dec704c462de2 Mon Sep 17 00:00:00 2001
From: RobTillaart <rob.tillaart@gmail.com>
Date: Thu, 27 Apr 2017 00:43:41 +0200
Subject: [PATCH] + FastShiftIn version 0.1.3 + optimized masking

---
 libraries/FastShiftIn/FastShiftIn.cpp    | 8 ++++----
 libraries/FastShiftIn/FastShiftIn.h      | 4 ++--
 libraries/FastShiftIn/library.json       | 2 +-
 libraries/FastShiftIn/library.properties | 4 ++--
 4 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/libraries/FastShiftIn/FastShiftIn.cpp b/libraries/FastShiftIn/FastShiftIn.cpp
index 616b4f59..e3e22d25 100644
--- a/libraries/FastShiftIn/FastShiftIn.cpp
+++ b/libraries/FastShiftIn/FastShiftIn.cpp
@@ -1,7 +1,7 @@
 //
 //    FILE: FastShiftIn.cpp
 //  AUTHOR: Rob Tillaart
-// VERSION: 0.1.02
+// VERSION: 0.1.3
 // PURPOSE: shiftin
 //    DATE: 2013-09-29
 //     URL:
@@ -37,7 +37,7 @@ int FastShiftIn::read()
 {
     _value = 0;
 
-    for (uint8_t i = 0; i < 8; i++)
+    for (uint8_t i = 0, m = 1, n = 128; i < 8; i++, m <<=1, n >>= 1)
     {
         uint8_t oldSREG = SREG;
         cli();
@@ -46,9 +46,9 @@ int FastShiftIn::read()
         if ((*_datain & _databit) > 0)
         {
             if (_bitorder == LSBFIRST)
-            _value |= (1 << i);
+            _value |= m;
             else
-            _value |= (1 << (7 - i));
+            _value |= n;
         }
         *_clockin &= ~_clockbit;
         SREG = oldSREG;
diff --git a/libraries/FastShiftIn/FastShiftIn.h b/libraries/FastShiftIn/FastShiftIn.h
index a408506b..2b163bfe 100644
--- a/libraries/FastShiftIn/FastShiftIn.h
+++ b/libraries/FastShiftIn/FastShiftIn.h
@@ -1,7 +1,7 @@
 //
 //    FILE: FastShiftIn.h
 //  AUTHOR: Rob Tillaart
-// VERSION: 0.1.01
+// VERSION: 0.1.3
 // PURPOSE: shiftin
 //    DATE: 2013-09-29
 //     URL:
@@ -18,7 +18,7 @@
 #include "WProgram.h"
 #endif
 
-#define FASTSHIFTIN_LIB_VERSION "0.1.01"
+#define FASTSHIFTIN_LIB_VERSION "0.1.3"
 
 #define FASTSHIFTIN_NOVALUE -1
 
diff --git a/libraries/FastShiftIn/library.json b/libraries/FastShiftIn/library.json
index 8f06781b..c20e24e7 100644
--- a/libraries/FastShiftIn/library.json
+++ b/libraries/FastShiftIn/library.json
@@ -1,7 +1,7 @@
 {
   "name": "FastShiftIn",
   "keywords": "Shift in serial ",
-  "description": "Class for up to 2x faster shift in.",
+  "description": "Class for up to 3x faster shift in.",
   "authors":
   [
     {
diff --git a/libraries/FastShiftIn/library.properties b/libraries/FastShiftIn/library.properties
index 79ee75de..cd7b34e8 100644
--- a/libraries/FastShiftIn/library.properties
+++ b/libraries/FastShiftIn/library.properties
@@ -1,8 +1,8 @@
 name=FastShiftIn
-version=0.1.01
+version=0.1.3
 author=Rob Tillaart <rob.tillaart@gmail.com>
 maintainer=Rob Tillaart <rob.tillaart@gmail.com>
-sentence=Class for up to 2x faster shift in.
+sentence=Class for up to 3x faster shift in.
 paragraph= 
 category=Signal Input/Output
 url=https://github.com/RobTillaart/Arduino/Libraries/