From 454eae4876aa6409268d68a10e56f5fb32c66c78 Mon Sep 17 00:00:00 2001
From: Volodymyr Shymanskyy <vshymanskyi@gmail.com>
Date: Sat, 2 Sep 2017 17:50:52 +0300
Subject: [PATCH] Improve operation on ESP32 and ESP8266 (add TINY_GSM_YIELD
 where needed)

---
 TinyGsmClientA6.h      | 4 ++--
 TinyGsmClientESP8266.h | 2 +-
 TinyGsmClientM590.h    | 4 ++--
 TinyGsmClientSIM800.h  | 6 +++---
 4 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/TinyGsmClientA6.h b/TinyGsmClientA6.h
index 4972a54..c5cd912 100644
--- a/TinyGsmClientA6.h
+++ b/TinyGsmClientA6.h
@@ -470,7 +470,7 @@ private:
 
   bool streamSkipUntil(char c) { //TODO: timeout
     while (true) {
-      while (!stream.available()) {}
+      while (!stream.available()) { TINY_GSM_YIELD(); }
       if (stream.read() == c)
         return true;
     }
@@ -529,7 +529,7 @@ private:
             DBG("### Got: ", len, "->", sockets[mux]->rx.free());
           }
           while (len--) {
-            while (!stream.available()) {}
+            while (!stream.available()) { TINY_GSM_YIELD(); }
             sockets[mux]->rx.put(stream.read());
           }
           data = "";
diff --git a/TinyGsmClientESP8266.h b/TinyGsmClientESP8266.h
index a3c3b4e..0b8967e 100644
--- a/TinyGsmClientESP8266.h
+++ b/TinyGsmClientESP8266.h
@@ -328,7 +328,7 @@ private:
             DBG("### Got: ", len, "->", sockets[mux]->rx.free());
           }
           while (len--) {
-            while (!stream.available()) {}
+            while (!stream.available()) { TINY_GSM_YIELD(); }
             sockets[mux]->rx.put(stream.read());
           }
           data = "";
diff --git a/TinyGsmClientM590.h b/TinyGsmClientM590.h
index 6c4513a..42f928e 100644
--- a/TinyGsmClientM590.h
+++ b/TinyGsmClientM590.h
@@ -491,7 +491,7 @@ private:
 
   bool streamSkipUntil(char c) { //TODO: timeout
     while (true) {
-      while (!stream.available()) {}
+      while (!stream.available()) { TINY_GSM_YIELD(); }
       if (stream.read() == c)
         return true;
     }
@@ -550,7 +550,7 @@ private:
             DBG("### Got: ", len, "->", sockets[mux]->rx.free());
           }
           while (len--) {
-            while (!stream.available()) {}
+            while (!stream.available()) { TINY_GSM_YIELD(); }
             sockets[mux]->rx.put(stream.read());
           }
           data = "";
diff --git a/TinyGsmClientSIM800.h b/TinyGsmClientSIM800.h
index b33c2b9..97788aa 100644
--- a/TinyGsmClientSIM800.h
+++ b/TinyGsmClientSIM800.h
@@ -568,13 +568,13 @@ private:
 
     for (size_t i=0; i<len; i++) {
 #ifdef TINY_GSM_USE_HEX
-      while (stream.available() < 2) {}
+      while (stream.available() < 2) { TINY_GSM_YIELD(); }
       char buf[4] = { 0, };
       buf[0] = stream.read();
       buf[1] = stream.read();
       char c = strtol(buf, NULL, 16);
 #else
-      while (!stream.available()) {}
+      while (!stream.available()) { TINY_GSM_YIELD(); }
       char c = stream.read();
 #endif
       sockets[mux]->rx.put(c);
@@ -621,7 +621,7 @@ private:
 
   bool streamSkipUntil(char c) { //TODO: timeout
     while (true) {
-      while (!stream.available()) {}
+      while (!stream.available()) { TINY_GSM_YIELD(); }
       if (stream.read() == c)
         return true;
     }