From 917497e7e4cc07019f611272c6799feb73a67ffb Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mario=20H=C3=BCttel?= <mario.huettel@gmx.net>
Date: Tue, 9 Jun 2020 22:50:20 +0200
Subject: [PATCH] implement display update function for lcd menu

---
 stm-firmware/lcd-menu.c | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/stm-firmware/lcd-menu.c b/stm-firmware/lcd-menu.c
index 7dc4d87..c5eed61 100644
--- a/stm-firmware/lcd-menu.c
+++ b/stm-firmware/lcd-menu.c
@@ -18,4 +18,25 @@
 * If not, see <http://www.gnu.org/licenses/>.
 */
 
-#include <reflow-controller/lcd-menu.h>
\ No newline at end of file
+#include <reflow-controller/lcd-menu.h>
+#include <reflow-controller/ui/menu.h>
+#include <reflow-controller/ui/lcd.h>
+
+static char display_buffer[4][21] = {0};
+
+static void update_display_buffer(uint8_t row, const char *data)
+{
+	int i;
+
+	if (row > 4)
+		return;
+	if (!data)
+		return;
+
+	for (i = 0; data[i] && i < LCD_CHAR_WIDTH; i++) {
+		display_buffer[row][i] = data[i];
+	}
+
+	display_buffer[row][i] = 0;
+}
+