From 1095629f62a3abf52c01e25e347c70e79e1d9e6d Mon Sep 17 00:00:00 2001
From: deadprogram <ron@hybridgroup.com>
Date: Sun, 21 Apr 2024 12:26:38 +0200
Subject: [PATCH] ssd1306: add Sleep() function for Displayer interface

Signed-off-by: deadprogram <ron@hybridgroup.com>
---
 ssd1306/ssd1306.go | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/ssd1306/ssd1306.go b/ssd1306/ssd1306.go
index 955a364..7aaef87 100644
--- a/ssd1306/ssd1306.go
+++ b/ssd1306/ssd1306.go
@@ -371,3 +371,15 @@ func (d *Device) Rotation() drivers.Rotation {
 func (d *Device) SetRotation(rotation drivers.Rotation) error {
 	return errNotImplemented
 }
+
+// Set the sleep mode for this display. When sleeping, the panel uses a lot
+// less power. The display won't show an image anymore, but the memory contents
+// should be kept.
+func (d *Device) Sleep(sleepEnabled bool) error {
+	if sleepEnabled {
+		d.Command(DISPLAYOFF)
+	} else {
+		d.Command(DISPLAYON)
+	}
+	return nil
+}