From e0ad5a90097ebc1f74effdfcf23f8af249439e90 Mon Sep 17 00:00:00 2001
From: Otto Winter <otto@otto-winter.com>
Date: Sun, 27 Oct 2019 12:28:01 +0100
Subject: [PATCH] Add Tuya message for no datapoints (#804)

See also https://github.com/esphome/feature-requests/issues/352#issuecomment-546579206
---
 esphome/components/tuya/tuya.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/esphome/components/tuya/tuya.cpp b/esphome/components/tuya/tuya.cpp
index 4efcf08fe6..cb796644c8 100644
--- a/esphome/components/tuya/tuya.cpp
+++ b/esphome/components/tuya/tuya.cpp
@@ -36,6 +36,9 @@ void Tuya::dump_config() {
     else
       ESP_LOGCONFIG(TAG, "  Datapoint %d: unknown", info.id);
   }
+  if (this->datapoints_.empty()) {
+    ESP_LOGCONFIG(TAG, "  Received no datapoints! Please make sure this is a supported Tuya device.");
+  }
   this->check_uart_settings(9600);
 }