Refactoring to PolledTimeout or optimistic_yield on the grounds that these are not wait loops on slow input.

Author: dok-net

cores/esp8266/HardwareSerial.cpp

@@ -146,7 +146,6 @@ unsigned long HardwareSerial::detectBaudrate(time_t timeoutMillis)
         if ((detectedBaudrate = testBaudrate())) {
           break;
         }
-        yield();
         delay(100);
     }
     return detectedBaudrate;

cores/esp8266/debug.cpp

@@ -54,7 +54,7 @@ void hexdump(const void *mem, uint32_t len, uint8_t cols)
         }
         src += linesize;
         len -= linesize;
-        yield();
+        optimistic_yield(10000);
     }
     os_printf("\n");
 }

libraries/ESP8266AVRISP/src/ESP8266AVRISP.cpp

@@ -281,7 +281,7 @@ uint8_t ESP8266AVRISP::write_flash_pages(int length) {
     int x = 0;
     int page = addr_page(here);
     while (x < length) {
-        yield();
+        optimistic_yield(10000);
         if (page != addr_page(here)) {
             commit(page);
             page = addr_page(here);

libraries/ESP8266WiFi/src/ESP8266WiFiSTA.cpp

@@ -431,10 +431,9 @@ int8_t ESP8266WiFiSTAClass::waitForConnectResult(unsigned long timeoutLength) {
     if((wifi_get_opmode() & 1) == 0) {
         return WL_DISCONNECTED;
     }
-    using esp8266::polledTimeout::oneShot;
-    oneShot timeout(timeoutLength); // number of milliseconds to wait before returning timeout error
+    using oneShotYieldMs = esp8266::polledTimeout::timeoutTemplate<false, esp8266::polledTimeout::YieldPolicy::YieldOrSkip>;
+    oneShotYieldMs timeout(timeoutLength); // number of milliseconds to wait before returning timeout error
     while(!timeout) {
-        yield();
         if(status() != WL_DISCONNECTED) {
             return status();
         }

libraries/ESP8266WiFiMesh/src/ESP8266WiFiMesh.cpp

@@ -150,7 +150,7 @@ IPAddress ESP8266WiFiMesh::getStaticIP()
 void ESP8266WiFiMesh::disableStaticIP()
 {
   WiFi.config(0u,0u,0u);
-  yield();
+  optimistic_yield(10000);
   staticIPActivated = false;
 }
 
@@ -185,9 +185,9 @@ void ESP8266WiFiMesh::deactivateAP()
 void ESP8266WiFiMesh::restartAP()
 {
   deactivateAP();
-  yield();
+  optimistic_yield(10000);
   activateAP();
-  yield();
+  optimistic_yield(10000);
 }
 
 ESP8266WiFiMesh * ESP8266WiFiMesh::getAPController()
@@ -331,9 +331,9 @@ bool ESP8266WiFiMesh::latestTransmissionSuccessful()
 void ESP8266WiFiMesh::fullStop(WiFiClient &currClient)
 {
   currClient.stop();
-  yield();
+  optimistic_yield(10000);
   WiFi.disconnect();
-  yield();
+  optimistic_yield(10000);
 }
 
 /**
@@ -375,7 +375,7 @@ transmission_status_t ESP8266WiFiMesh::exchangeInfo(WiFiClient &currClient)
   verboseModePrint("Transmitting");  // Not storing strings in flash (via F()) to avoid performance impacts when using the string.
 
   currClient.print(getMessage() + '\r');
-  yield();
+  optimistic_yield(10000);
 
   if (!waitForClientTransmission(currClient, _stationModeTimeoutMs))
   {
@@ -390,7 +390,7 @@ transmission_status_t ESP8266WiFiMesh::exchangeInfo(WiFiClient &currClient)
   }
 
   String response = currClient.readStringUntil('\r');
-  yield();
+  optimistic_yield(10000);
   currClient.flush();
 
   /* Pass data to user callback */
@@ -443,7 +443,7 @@ transmission_status_t ESP8266WiFiMesh::attemptDataTransferKernel()
   }
 
   currClient.stop();
-  yield();
+  optimistic_yield(10000);
 
   return transmissionOutcome;
 }
@@ -476,7 +476,7 @@ transmission_status_t ESP8266WiFiMesh::connectToNode(const String &targetSSID, i
     WiFiMode_t storedWiFiMode = WiFi.getMode();
     WiFi.mode(WIFI_OFF);
     WiFi.mode(storedWiFiMode);
-    yield();
+      optimistic_yield(10000);
 
     #else
     // Disable static IP so that we can connect to other servers via DHCP (DHCP is slower but required for connecting to more than one server, it seems (possible bug?)).
@@ -500,7 +500,7 @@ transmission_status_t ESP8266WiFiMesh::connectToNode(const String &targetSSID, i
     {
       verboseModePrint(F("... "), false);
       WiFi.disconnect();
-      yield();
+      optimistic_yield(10000);
       initiateConnectionToAP(targetSSID, targetChannel, targetBSSID);
       attemptNumber++;
     }
@@ -527,7 +527,7 @@ void ESP8266WiFiMesh::attemptTransmission(const String &message, bool concluding
   if(initialDisconnect)
   {
     WiFi.disconnect();
-    yield();
+    optimistic_yield(10000);
   }
 
   latestTransmissionOutcomes.clear();
@@ -565,7 +565,7 @@ void ESP8266WiFiMesh::attemptTransmission(const String &message, bool concluding
     for(NetworkInfo &currentNetwork : connectionQueue)
     {
       WiFi.disconnect();
-      yield();
+      optimistic_yield(10000);
 
       String currentSSID;
       int currentWiFiChannel = NETWORK_INFO_DEFAULT_INT;
@@ -614,7 +614,7 @@ void ESP8266WiFiMesh::attemptTransmission(const String &message, bool concluding
   if(concludingDisconnect)
   {
     WiFi.disconnect();
-    yield();
+    optimistic_yield(10000);
   }
 }
 
@@ -658,7 +658,7 @@ void ESP8266WiFiMesh::acceptRequest()
 
       /* Read in request and pass it to the supplied requestHandler */
       String request = _client.readStringUntil('\r');
-      yield();
+      optimistic_yield(10000);
       _client.flush();
 
       String response = _requestHandler(request, *this);
@@ -669,7 +669,7 @@ void ESP8266WiFiMesh::acceptRequest()
         verboseModePrint("Responding"); // Not storing strings in flash (via F()) to avoid performance impacts when using the string.
         _client.print(response + '\r');
         _client.flush();
-        yield();
+        optimistic_yield(10000);
       }
     }
   }