From 7992af82000c20f60e78c1e5adb54f33cecd0e80 Mon Sep 17 00:00:00 2001
From: elral <3263285+elral@users.noreply.github.com>
Date: Mon, 21 Oct 2024 21:30:41 +0200
Subject: [PATCH] add power saving mode for outputsifter (#339)

---
 src/MF_OutputShifter/MFOutputShifter.cpp | 13 +++++++++++++
 src/MF_OutputShifter/MFOutputShifter.h   |  1 +
 src/MF_OutputShifter/OutputShifter.cpp   |  7 +++++++
 src/MF_OutputShifter/OutputShifter.h     |  1 +
 src/mobiflight.cpp                       |  3 +++
 5 files changed, 25 insertions(+)

diff --git a/src/MF_OutputShifter/MFOutputShifter.cpp b/src/MF_OutputShifter/MFOutputShifter.cpp
index c4d827e8..59cf0566 100644
--- a/src/MF_OutputShifter/MFOutputShifter.cpp
+++ b/src/MF_OutputShifter/MFOutputShifter.cpp
@@ -84,4 +84,17 @@ void MFOutputShifter::update()
     digitalWrite(_latchPin, HIGH);
 }
 
+void MFOutputShifter::powerSavingMode(bool state)
+{
+    if (state) {
+        digitalWrite(_latchPin, LOW);
+        for (uint8_t i = _moduleCount; i > 0; i--) {
+            shiftOut(_dataPin, _clockPin, MSBFIRST, 0xFF * MF_LOW);
+        }
+        digitalWrite(_latchPin, HIGH);
+    } else {
+        update();
+    }
+}
+
 // MFOutputShifter.cpp
diff --git a/src/MF_OutputShifter/MFOutputShifter.h b/src/MF_OutputShifter/MFOutputShifter.h
index 5f8ea737..1720a416 100644
--- a/src/MF_OutputShifter/MFOutputShifter.h
+++ b/src/MF_OutputShifter/MFOutputShifter.h
@@ -26,6 +26,7 @@ class MFOutputShifter
     void detach();
     void clear();
     void update();
+    void powerSavingMode(bool state);
 
 private:
     uint8_t _latchPin;    // Latch pin
diff --git a/src/MF_OutputShifter/OutputShifter.cpp b/src/MF_OutputShifter/OutputShifter.cpp
index 34305c5a..3d3282df 100644
--- a/src/MF_OutputShifter/OutputShifter.cpp
+++ b/src/MF_OutputShifter/OutputShifter.cpp
@@ -60,6 +60,13 @@ namespace OutputShifter
         int   value  = cmdMessenger.readInt16Arg();
         outputShifter[module].setPins(pins, value);
     }
+
+    void PowerSave(bool state)
+    {
+        for (uint8_t i = 0; i < outputShifterRegistered; ++i) {
+            outputShifter[i].powerSavingMode(state);
+        }
+    }
 } // namespace
 
 // OutputShifter.cpp
diff --git a/src/MF_OutputShifter/OutputShifter.h b/src/MF_OutputShifter/OutputShifter.h
index 257247d2..b3917029 100644
--- a/src/MF_OutputShifter/OutputShifter.h
+++ b/src/MF_OutputShifter/OutputShifter.h
@@ -12,6 +12,7 @@ namespace OutputShifter
     void Add(uint8_t latchPin, uint8_t clockPin, uint8_t dataPin, uint8_t modules);
     void Clear();
     void OnSet();
+    void PowerSave(bool state);
 }
 
 // OutputShifter.h
\ No newline at end of file
diff --git a/src/mobiflight.cpp b/src/mobiflight.cpp
index 45ebae74..2d0a9b3d 100644
--- a/src/mobiflight.cpp
+++ b/src/mobiflight.cpp
@@ -123,6 +123,9 @@ void SetPowerSavingMode(bool state)
 #if MF_CUSTOMDEVICE_SUPPORT == 1
     CustomDevice::PowerSave(state);
 #endif
+#if MF_OUTPUT_SHIFTER_SUPPORT == 1
+    OutputShifter::PowerSave(state);
+#endif
 
 #ifdef DEBUG2CMDMESSENGER
     if (state)