From a1ae6d343074f882bc2c9a39d0dc7f680a4c4e50 Mon Sep 17 00:00:00 2001
From: Rotzbua <Rotzbua@users.noreply.github.com>
Date: Tue, 12 Mar 2024 23:35:50 +0100
Subject: [PATCH] docs: add constructor

---
 README.md | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/README.md b/README.md
index ee7570b..a4a8ab9 100644
--- a/README.md
+++ b/README.md
@@ -108,6 +108,17 @@ void loop() {
 
 ## API
 
+Create the object with:
+
+```c++
+MQTTClient()
+MQTTClient(int bufSize)
+MQTTClient(int readBufSize, int writeBufSize)
+```
+
+- `MQTTClient` has two buffers. One for read and one for write. Default buffer size is 128 bytes. In summary are 256 bytes are used for buffers.
+- The `bufSize` option sets `readBufSize` and `writeBufSize` to the same value.
+
 Initialize the object using the hostname of the broker, the brokers port (default: `1883`) and the underlying Client class for network transport:
 
 ```c++