From 6dd90d7e956af09dbe44a4349081cebb54314a18 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbyn=C4=9Bk=20Pecina?=
 <58307338+peca2345@users.noreply.github.com>
Date: Thu, 2 Mar 2023 18:10:40 +0100
Subject: [PATCH] Update README.md

---
 README.md | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 56 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 8769510..e12d654 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,56 @@
-# ESPHome-modbus-heatpump-Gree-Versati-III
\ No newline at end of file
+# ESPHome-modbus-heatpump-Gree-Versati-III
+
+** Info: **
+
+Tento návod popisuje jak připojit zařízení do Home Assistant přes modbus protokol pomocí ESP a RS485/TTL převodníku.
+V tomto případě jde o připojení tepelného čerpadla Gree Versati III.
+
+** Komponenty: **
+
+- ESP8266 / ESP32
+- RS485/TTL converter: [SHOP](https://www.laskakit.cz/prevodnik-ttl-na-rs-485--max485/) 
+
+## ESPHome code
+```
+uart:
+  id: mod_bus
+  tx_pin: GPIO16
+  rx_pin: GPIO17
+  baud_rate: 9600
+  stop_bits: 2
+
+modbus:
+  flow_control_pin: GPIO23
+  send_wait_time: 100ms
+  id: modbus_versati3
+  
+
+modbus_controller:
+  - id: versati3
+    ## the Modbus device addr
+    address: 0x1
+    modbus_id: modbus_versati3
+    setup_priority: -10
+    update_interval: 15s
+    
+number:
+  - platform: modbus_controller
+    modbus_controller_id: versati3
+    name: "nasi_komora_modbus_tank_target_temp_set"
+    address: 13
+    unit_of_measurement: "°C"
+    value_type: S_WORD
+    entity_category: config 
+    
+sensor:
+  - platform: modbus_controller
+    modbus_controller_id: versati3
+    name: "nasi_komora_modbus_tank_target_temp"
+    address: 13
+    unit_of_measurement: "°C" 
+    register_type: holding
+    value_type: U_WORD
+    accuracy_decimals: 1
+    # filters:
+    # - multiply: 0.1    
+```