WiFi light sleep enabled, power saving delay in main loop

code/espurna/config/general.h

@@ -9,6 +9,7 @@
 
 #define ADMIN_PASS              "fibonacci" // Default password (WEB, OTA, WIFI)
 #define DEVICE_NAME             MANUFACTURER "_" DEVICE // Concatenate both to get a unique device name
+#define LOOP_DELAY_TIME         10          // Delay for this millis in the main loop [0-250]
 
 //------------------------------------------------------------------------------
 // TELNET
@@ -266,6 +267,7 @@ PROGMEM const char* const custom_reset_string[] = {
 #define WIFI_RECONNECT_INTERVAL 180000      // If could not connect to WIFI, retry after this time in ms
 #define WIFI_MAX_NETWORKS       5           // Max number of WIFI connection configurations
 #define WIFI_AP_MODE            AP_MODE_ALONE
+#define WIFI_SLEEP_ENABLED      1           // Enable WiFi light sleep
 
 // Optional hardcoded configuration (up to 2 different networks)
 //#define WIFI1_SSID              "..."

code/espurna/espurna.ino

@@ -241,6 +241,7 @@ void setup() {
         if (!systemCheck()) return;
     #endif
 
+    // Init webserver required before any module that uses API
     #if WEB_SUPPORT
         webSetup();
     #endif
@@ -256,7 +257,6 @@ void setup() {
     #ifdef ITEAD_SONOFF_RFBRIDGE
         rfbSetup();
     #endif
-
     #if POWER_PROVIDER != POWER_PROVIDER_NONE
         powerSetup();
     #endif
@@ -311,26 +311,23 @@ void loop() {
     wifiLoop();
     otaLoop();
 
-    // Do not run the next services if system is flagged stable
     #if SYSTEM_CHECK_ENABLED
         systemCheckLoop();
+        // Do not run the next services if system is flagged stable
         if (!systemCheck()) return;
     #endif
 
     #if LIGHT_PROVIDER != LIGHT_PROVIDER_NONE
         lightLoop();
     #endif
-
-
-    buttonLoop();
     relayLoop();
+    buttonLoop();
     ledLoop();
     mqttLoop();
 
     #ifdef ITEAD_SONOFF_RFBRIDGE
         rfbLoop();
     #endif
-
     #if POWER_PROVIDER != POWER_PROVIDER_NONE
         powerLoop();
     #endif
@@ -362,4 +359,9 @@ void loop() {
         irLoop();
     #endif
 
+    // Power saving delay
+    #if LOOP_DELAY_TIME
+        delay(LOOP_DELAY_TIME);
+    #endif
+
 }

code/espurna/wifi.ino

@@ -174,6 +174,10 @@ void wifiInject() {
 
 void wifiSetup() {
 
+    #if WIFI_SLEEP_ENABLED
+        wifi_set_sleep_type(LIGHT_SLEEP_T);
+    #endif
+
     wifiInject();
     wifiConfigure();