From 040109e17b511253b2e3d8d92c67698a3d45ac18 Mon Sep 17 00:00:00 2001
From: Daniel Friesel <derf@finalrewind.org>
Date: Sun, 11 Apr 2021 18:54:17 +0200
Subject: ssd1306: Add setContrast and setInvert methods

---
 include/driver/ssd1306.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'include/driver')

diff --git a/include/driver/ssd1306.h b/include/driver/ssd1306.h
index 4a2cf01..2afcb86 100644
--- a/include/driver/ssd1306.h
+++ b/include/driver/ssd1306.h
@@ -56,7 +56,7 @@ class SSD1306 {
 			SSD1306_SET_DISP_CLK_DIV, 0x80,
 			SSD1306_SET_PRECHARGE, 0xf1,
 			SSD1306_SET_VCOM_DESEL, 0x30,
-			SSD1306_SET_CONTRAST, 0xff,
+			SSD1306_SET_CONTRAST, 0x7f,
 			SSD1306_SET_ENTIRE_ON,
 			SSD1306_SET_NORM_INV,
 			SSD1306_SET_CHARGE_PUMP, 0x14,
@@ -70,6 +70,8 @@ class SSD1306 {
 		SSD1306() {}
 
 		void init();
+		void setContrast(unsigned char contrast);
+		void setInvert(bool invert);
 		void showImage(unsigned char* data, uint16_t length);
 };
 
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