From bd677fcb52bb3296683d1ab29a9f23b6fed4c566 Mon Sep 17 00:00:00 2001
From: Daniel Eichhorn <dani.eichhorn@squix.ch>
Date: Wed, 21 Mar 2018 11:38:20 +0100
Subject: [PATCH] Add setBrightness as convenience method
---
OLEDDisplay.cpp | 18 ++++++++++++++++++
OLEDDisplay.h | 3 +++
README.md | 7 ++++++-
3 files changed, 27 insertions(+), 1 deletion(-)
diff --git a/OLEDDisplay.cpp b/OLEDDisplay.cpp
index 71c4189..2c0c72a 100644
--- a/OLEDDisplay.cpp
+++ b/OLEDDisplay.cpp
@@ -578,6 +578,24 @@ void OLEDDisplay::setContrast(uint8_t contrast, uint8_t precharge, uint8_t comde
sendCommand(DISPLAYON);
}
+void OLEDDisplay::setBrightness(uint8_t brightness) {
+ uint8_t contrast = brightness;
+ if (brightness < 128) {
+ // Magic values to get a smooth/ step-free transition
+ contrast = brightness * 1.171;
+ } else {
+ contrast = brightness * 1.171 - 43;
+ }
+
+ uint8_t precharge = 241;
+ if (brightness == 0) {
+ precharge = 0;
+ }
+ uint8_t comdetect = brightness / 8;
+
+ setContrast(contrast, precharge, comdetect);
+}
+
void OLEDDisplay::resetOrientation() {
sendCommand(SEGREMAP);
sendCommand(COMSCANINC); //Reset screen rotation or mirroring
diff --git a/OLEDDisplay.h b/OLEDDisplay.h
index 75f0ee1..ddf80bd 100644
--- a/OLEDDisplay.h
+++ b/OLEDDisplay.h
@@ -222,6 +222,9 @@ class OLEDDisplay : public Print {
// normal brightness & contrast: contrast = 100
void setContrast(uint8_t contrast, uint8_t precharge = 241, uint8_t comdetect = 64);
+ // Convenience method to access
+ void setBrightness(uint8_t);
+
// Reset display rotation or mirroring
void resetOrientation();
diff --git a/README.md b/README.md
index 3809ddc..d7db5ef 100644
--- a/README.md
+++ b/README.md
@@ -141,7 +141,12 @@ void invertDisplay(void);
void normalDisplay(void);
// Set display contrast
-void setContrast(uint8_t contrast);
+// really low brightness & contrast: contrast = 10, precharge = 5, comdetect = 0
+// normal brightness & contrast: contrast = 100
+void setContrast(uint8_t contrast, uint8_t precharge = 241, uint8_t comdetect = 64);
+
+// Convenience method to access
+void setBrightness(uint8_t);
// Turn the display upside down
void flipScreenVertically();
--
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