Add nvs "wifi_ps" to disable wifi power save mode - release

Set disable_ps = n to disable power save mode. This may help with wifi
signal stability, but will likely result in a higher power consumption.

components/services/battery.c

@@ -43,7 +43,7 @@ static struct {
 /****************************************************************************************
  * 
  */
-int battery_value_svc(void) {
+float battery_value_svc(void) {
 	return battery.avg;
  }
  

components/services/monitor.h

@@ -16,6 +16,6 @@ extern bool jack_inserted_svc(void);
 extern void (*spkfault_handler_svc)(bool inserted);
 extern bool spkfault_svc(void);
 
-extern int battery_value_svc(void);
+extern float battery_value_svc(void);
 extern uint8_t battery_level_svc(void);
 

components/wifi-manager/code.js

@@ -1028,19 +1028,27 @@ function checkStatus() {
 			if (data.hasOwnProperty('Voltage')) {
 				var voltage = data['Voltage'];
 				var layer;
+
+				/* Assuming Li-ion 18650s as a power source, 3.9V per cell, or above is treated
+					as full charge (>75% of capacity).  3.4V is empty. The gauge is loosely
+					following the graph here:
+						https://learn.adafruit.com/li-ion-and-lipoly-batteries/voltages
+					using the 0.2C discharge profile for the rest of the values.
+				*/
+
 				if (voltage > 0) {
-					if (inRange(voltage, 5.8, 6.2) || inRange(voltage, 8.8, 9.2)) {
+					if (inRange(voltage, 5.8, 6.8) || inRange(voltage, 8.8, 10.2)) {
 						layer = bat0;
-					} else if (inRange(voltage, 6.2, 6.8) || inRange(voltage, 9.2, 10.0)) {
+					} else if (inRange(voltage, 6.8, 7.4) || inRange(voltage, 10.2, 11.1)) {
 						layer = bat1;
-					} else if (inRange(voltage, 6.8, 7.1) || inRange(voltage, 10.0, 10.5)) {
+					} else if (inRange(voltage, 7.4, 7.5) || inRange(voltage, 11.1, 11.25)) {
 						layer = bat2;
-					} else if (inRange(voltage, 7.1, 7.5) || inRange(voltage, 10.5, 11.0)) {
-						layer = bat3;
+					} else if (inRange(voltage, 7.5, 7.8) || inRange(voltage, 11.25, 11.7)) {
+						layer = bat3;	
 					} else {
 						layer = bat4;
 					}
-					layer.setAttribute("display", "inline");
+					layer.setAttribute("display","inline");
 				}
 			}
 			if (data.hasOwnProperty('Jack')) {

components/wifi-manager/wifi_manager.c

@@ -272,10 +272,18 @@ void wifi_manager_init_wifi(){
     ESP_LOGD(TAG,   "Initializing wifi. Setting WiFi mode to WIFI_MODE_NULL");
     ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_NULL) );
     ESP_LOGD(TAG,   "Initializing wifi. Starting wifi");
-	if (gpio36_39_used) {
-		ESP_LOGW(TAG, "GPIO 36 or 39 are in use, need to disable WiFi PowerSave!");
-		esp_wifi_set_ps(WIFI_PS_NONE); 
+	char * disable_ps = config_alloc_get_default(NVS_TYPE_STR, "disable_ps", "n", 0);
+
+    if (gpio36_39_used || (disable_ps && strcasecmp(disable_ps,"y"))) {
+		if(gpio36_39_used){
+			ESP_LOGW(TAG, "GPIO 36 or 39 are in use, need to disable WiFi PowerSave!");
 		}
+		else {
+			ESP_LOGW(TAG, "wifi powersave config is disabled. Disabling WiFi PowerSave!");
+		}
+		esp_wifi_set_ps(WIFI_PS_NONE); 
+	}
+    FREE_AND_NULL(disable_ps);
     ESP_ERROR_CHECK( esp_wifi_start() );
 
     taskYIELD();