From e0d32c9f45f5a8ab6b84172d0cd171aa8c48d173 Mon Sep 17 00:00:00 2001
From: jayjayuk <jonnyandreotti@gmail.com>
Date: Sat, 12 Dec 2015 23:52:19 +0000
Subject: [PATCH] ESP8266::recv  -  speed optimisation

function was entering while loop and timing out even if there was
no
data available or data was to be sent (probably most of the time).
This
optimisation uses an IF statement to check if data is available
before
entering the while loop
---
 ESP8266.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ESP8266.cpp b/ESP8266.cpp
index 47bcc7c..cab229d 100644
--- a/ESP8266.cpp
+++ b/ESP8266.cpp
@@ -286,6 +286,7 @@ uint32_t ESP8266::recv(uint8_t mux_id, uint8_t *buffer, uint32_t buffer_size, ui
 
 uint32_t ESP8266::recv(uint8_t *coming_mux_id, uint8_t *buffer, uint32_t buffer_size, uint32_t timeout)
 {
+	if(!m_puart->available()) return 0; // don't enter while loop if there is no serial data available
     return recvPkg(buffer, buffer_size, NULL, timeout, coming_mux_id);
 }