From 29193db631650e9af053bcc1918cc877b1233723 Mon Sep 17 00:00:00 2001
From: probonopd <probonopd@users.noreply.github.com>
Date: Wed, 18 Jan 2023 19:42:01 +0000
Subject: [PATCH] Implements rotation and mirroring options for SSD1306
 displays (only). (#420)

Requires an update to circle (PR submitted to develop branch)

Co-authored-by: diyelectromusic <68612569+diyelectromusic@users.noreply.github.com>
---
 src/config.cpp        | 12 ++++++++++++
 src/config.h          |  4 ++++
 src/minidexed.ini     |  2 ++
 src/userinterface.cpp |  4 +++-
 4 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/src/config.cpp b/src/config.cpp
index 1143476..5c52852 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -84,6 +84,8 @@ void CConfig::Load (void)
 	m_nSSD1306LCDI2CAddress = m_Properties.GetNumber ("SSD1306LCDI2CAddress", 0);
 	m_nSSD1306LCDWidth = m_Properties.GetNumber ("SSD1306LCDWidth", 128);
 	m_nSSD1306LCDHeight = m_Properties.GetNumber ("SSD1306LCDHeight", 32);
+	m_bSSD1306LCDRotate = m_Properties.GetNumber ("SSD1306LCDRotate", 0) != 0;
+	m_bSSD1306LCDMirror = m_Properties.GetNumber ("SSD1306LCDMirror", 0) != 0;
 
 	m_nLCDColumns = m_Properties.GetNumber ("LCDColumns", 16);
 	m_nLCDRows = m_Properties.GetNumber ("LCDRows", 2);
@@ -231,6 +233,16 @@ unsigned CConfig::GetSSD1306LCDHeight (void) const
 	return m_nSSD1306LCDHeight;
 }
 
+bool CConfig::GetSSD1306LCDRotate (void) const
+{
+	return m_bSSD1306LCDRotate;
+}
+
+bool CConfig::GetSSD1306LCDMirror (void) const
+{
+	return m_bSSD1306LCDMirror;
+}
+
 unsigned CConfig::GetLCDColumns (void) const
 {
 	return m_nLCDColumns;
diff --git a/src/config.h b/src/config.h
index be75100..eb14918 100644
--- a/src/config.h
+++ b/src/config.h
@@ -93,6 +93,8 @@ public:
 	unsigned GetSSD1306LCDI2CAddress (void) const;
 	unsigned GetSSD1306LCDWidth (void) const;
 	unsigned GetSSD1306LCDHeight (void) const;
+	bool     GetSSD1306LCDRotate (void) const;
+	bool     GetSSD1306LCDMirror (void) const;
 
 	unsigned GetLCDColumns (void) const;
 	unsigned GetLCDRows (void) const;
@@ -167,6 +169,8 @@ private:
 	unsigned m_nSSD1306LCDI2CAddress;
 	unsigned m_nSSD1306LCDWidth;
 	unsigned m_nSSD1306LCDHeight;
+	bool     m_bSSD1306LCDRotate;
+	bool     m_bSSD1306LCDMirror;
 	
 	unsigned m_nLCDColumns;
 	unsigned m_nLCDRows;
diff --git a/src/minidexed.ini b/src/minidexed.ini
index 7d73416..8083e19 100644
--- a/src/minidexed.ini
+++ b/src/minidexed.ini
@@ -34,6 +34,8 @@ LCDI2CAddress=0x00
 SSD1306LCDI2CAddress=0x0
 SSD1306LCDWidth=128
 SSD1306LCDHeight=32
+SSD1306LCDRotate=0
+SSD1306LCDMirror=0
 
 # Default is 16x2 display (e.g. HD44780)
 LCDColumns=16
diff --git a/src/userinterface.cpp b/src/userinterface.cpp
index f34e561..0bcd931 100644
--- a/src/userinterface.cpp
+++ b/src/userinterface.cpp
@@ -58,7 +58,9 @@ bool CUserInterface::Initialize (void)
 		unsigned i2caddr = m_pConfig->GetLCDI2CAddress ();
 		unsigned ssd1306addr = m_pConfig->GetSSD1306LCDI2CAddress ();
 		if (ssd1306addr != 0) {
-			m_pSSD1306 = new CSSD1306Device (m_pConfig->GetSSD1306LCDWidth (), m_pConfig->GetSSD1306LCDHeight (), m_pI2CMaster, ssd1306addr);
+			m_pSSD1306 = new CSSD1306Device (m_pConfig->GetSSD1306LCDWidth (), m_pConfig->GetSSD1306LCDHeight (),
+											 m_pI2CMaster, ssd1306addr,
+											 m_pConfig->GetSSD1306LCDRotate (), m_pConfig->GetSSD1306LCDMirror ());
 			LOGDBG ("LCD: SSD1306");
 			if (!m_pSSD1306->Initialize ())
 			{