From 7fd65987d33f21433975ef252c29f20a33ef33a0 Mon Sep 17 00:00:00 2001
From: David Woodhouse <dwmw2@infradead.org>
Date: Thu, 8 Aug 2024 03:29:49 +0100
Subject: [PATCH] hx711: Check for DOUT going high after a reading (#7214)

---
 esphome/components/hx711/hx711.cpp | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/esphome/components/hx711/hx711.cpp b/esphome/components/hx711/hx711.cpp
index dbbf4c91f4..1a7169eed7 100644
--- a/esphome/components/hx711/hx711.cpp
+++ b/esphome/components/hx711/hx711.cpp
@@ -39,8 +39,8 @@ bool HX711Sensor::read_sensor_(uint32_t *result) {
     return false;
   }
 
-  this->status_clear_warning();
   uint32_t data = 0;
+  bool final_dout;
 
   {
     InterruptLock lock;
@@ -59,8 +59,17 @@ bool HX711Sensor::read_sensor_(uint32_t *result) {
       this->sck_pin_->digital_write(false);
       delayMicroseconds(1);
     }
+    final_dout = this->dout_pin_->digital_read();
   }
 
+  if (!final_dout) {
+    ESP_LOGW(TAG, "HX711 DOUT pin not high after reading (data 0x%" PRIx32 ")!", data);
+    this->status_set_warning();
+    return false;
+  }
+
+  this->status_clear_warning();
+
   if (data & 0x800000ULL) {
     data |= 0xFF000000ULL;
   }