From 19dbff67f2a4921ccbe06fdf29e229225e8aed2d Mon Sep 17 00:00:00 2001
From: Mark Roberts <mdroberts1243@gmail.com>
Date: Fri, 25 Sep 2020 00:26:39 -0400
Subject: [PATCH] Fixed page set mask to be four bits!

---
 shared-module/displayio/display_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/shared-module/displayio/display_core.c b/shared-module/displayio/display_core.c
index 4e36e4dd1f..6e05b47571 100644
--- a/shared-module/displayio/display_core.c
+++ b/shared-module/displayio/display_core.c
@@ -261,7 +261,7 @@ void displayio_display_core_set_region_to_update(displayio_display_core_t* self,
     //     Page address command = 0xB0
     if (SH1107_addressing) {
         // set the page to our x value
-        data[0] = 0xB0 | (x1 & 0x07);
+        data[0] = 0xB0 | (x1 & 0x0F);
         data_length = 1;
     }
     self->send(self->bus, data_type, chip_select, data, data_length);