From f7966df39849bfc0c6954d058a621da0d58335e0 Mon Sep 17 00:00:00 2001
From: Daniel Friesel <derf@finalrewind.org>
Date: Sun, 11 Apr 2021 09:37:25 +0200
Subject: examples/ssd1306: add support for 128x32 displays

---
 commandline/examples/ssd1306-init | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

(limited to 'commandline/examples/ssd1306-init')

diff --git a/commandline/examples/ssd1306-init b/commandline/examples/ssd1306-init
index 56e77e5..4d587be 100755
--- a/commandline/examples/ssd1306-init
+++ b/commandline/examples/ssd1306-init
@@ -3,8 +3,14 @@
 WR_CMD=0x80
 WR_DATA=0x40
 
-WIDTH=128
-HEIGHT=64
+: ${WIDTH:=128}
+: ${HEIGHT:=64}
+
+if [ "${HEIGHT}" = 32 ]; then
+	COM_PIN_CFG=0x02
+else
+	COM_PIN_CFG=0x12
+fi
 
 SET_CONTRAST=0x81
 SET_ENTIRE_ON=0xa4
@@ -32,7 +38,7 @@ for cmd in $SET_DISP_OFF \
 		$SET_MUX_RATIO $(( HEIGHT - 1 )) \
 		$SET_COM_OUT_DIR_08 \
 		$SET_DISP_OFFSET 0x00 \
-		$SET_COM_PIN_CFG 0x12 \
+		$SET_COM_PIN_CFG $COM_PIN_CFG \
 		$SET_DISP_CLK_DIV 0x80 \
 		$SET_PRECHARGE 0xf1 \
 		$SET_VCOM_DESEL 0x30 \
-- 
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