From dcf4ddf3c26ccb83ff5f30e9f368105e081231d7 Mon Sep 17 00:00:00 2001
From: Msq001 <760675063@qq.com>
Date: Mon, 25 May 2020 17:28:13 +0800
Subject: [PATCH] fix st7920 bug (#714)

fix st7920 bugs after #705
---
 TFT/src/User/API/UI/ST7920_Simulator.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/TFT/src/User/API/UI/ST7920_Simulator.c b/TFT/src/User/API/UI/ST7920_Simulator.c
index 7a4f9d7077..05c351a416 100644
--- a/TFT/src/User/API/UI/ST7920_Simulator.c
+++ b/TFT/src/User/API/UI/ST7920_Simulator.c
@@ -558,8 +558,10 @@ void ST7920_ParseRecv(u8 val)
   {
     st7920_reg.ctrl_status = (ST7920_CTRL_STATUS)val;
     rcvIndex = 0;
-    st7920.address_is_y = 1;
-    st7920_reg.cgram = 0;
+    if (st7920_reg.ctrl_status == ST7920_WDATA) {
+      st7920.address_is_y = 1;
+      st7920_reg.cgram = 0;
+    }
   }
   else
   {