From 3be29dfecdb077a01c5df3cc7f6c0047c1efdd54 Mon Sep 17 00:00:00 2001
From: drid <drid@users.noreply.github.com>
Date: Fri, 17 Feb 2023 23:34:40 +0200
Subject: [PATCH] Fix 1-pin ultrasonic sensor detection (#17966)

* Fix 1-pin ultrasonic sensor detection

Signed-off-by: Ilias Daradimos <judgedrid@gmail.com>

* Fix typo

---------

Signed-off-by: Ilias Daradimos <judgedrid@gmail.com>
---
 tasmota/tasmota_xsns_sensor/xsns_22_sr04.ino | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tasmota/tasmota_xsns_sensor/xsns_22_sr04.ino b/tasmota/tasmota_xsns_sensor/xsns_22_sr04.ino
index 01f5a22a9..4a4e28e17 100644
--- a/tasmota/tasmota_xsns_sensor/xsns_22_sr04.ino
+++ b/tasmota/tasmota_xsns_sensor/xsns_22_sr04.ino
@@ -124,7 +124,7 @@ void Sr04TModeDetect(void) {
     if (PinUsed(GPIO_SR04_TRIG)) {
       SR04.type = (Sr04TMiddleValue(Sr04TMode3Distance(), Sr04TMode3Distance(), Sr04TMode3Distance()) != 0) ? SR04_MODE_SER_TRANSCEIVER : SR04_MODE_TRIGGER_ECHO;
     } else {
-      SR04.type = SR04_MODE_SER_RECEIVER;
+      SR04.type = (Sr04TMiddleValue(Sr04TMode2Distance(), Sr04TMode2Distance(), Sr04TMode2Distance()) != 0) ? SR04_MODE_SER_RECEIVER : SR04_MODE_TRIGGER_ECHO;
     }
   } else {
     SR04.type = SR04_MODE_TRIGGER_ECHO;