From 712294d812f7f7499ee042fbc92a640a298cc1b8 Mon Sep 17 00:00:00 2001
From: gunadai <gunadai@gmail.com>
Date: Sun, 8 Dec 2024 14:38:42 +0000
Subject: [PATCH] pointer fix for gt911_touchscreen.c

update gt911_touchscreen.c to set last_touch_x/y to -1 for all non-down pointers (currently hardcoded to 3)
---
 tulip/esp32s3/gt911_touchscreen.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tulip/esp32s3/gt911_touchscreen.c b/tulip/esp32s3/gt911_touchscreen.c
index 947844bb..3113ad8f 100644
--- a/tulip/esp32s3/gt911_touchscreen.c
+++ b/tulip/esp32s3/gt911_touchscreen.c
@@ -145,6 +145,10 @@ void run_gt911(void *param) {
                         last_touch_y[i] = (touch_y[i] + touch_y_delta)*touch_y_scale;
                     #endif
                 }
+                for(uint8_t i=touch_cnt;i<3;i++) {
+                    last_touch_x[i] = -1;
+                    last_touch_y[i] = -1;
+		}
                 //fprintf(stderr, "touch DOWN %d %d\n", last_touch_x[0], last_touch_y[0]);
                 send_touch_to_micropython(last_touch_x[0], last_touch_y[0], 0);
                 gt911_held = 1;