more async migration

rust/src/hal/water.rs

@@ -102,7 +102,7 @@ impl<'a> TankSensor<'a> {
         self.get_flow_meter_value()
     }
 
-    pub fn water_temperature_c(&mut self) -> anyhow::Result<f32> {
+    pub async fn water_temperature_c(&mut self) -> anyhow::Result<f32> {
         //multisample should be moved to water_temperature_c
         let mut attempt = 1;
         let water_temp: Result<f32, anyhow::Error> = loop {
@@ -124,7 +124,7 @@ impl<'a> TankSensor<'a> {
         water_temp
     }
 
-    fn single_temperature_c(&mut self) -> anyhow::Result<f32> {
+    async fn single_temperature_c(&mut self) -> anyhow::Result<f32> {
         self.one_wire_bus
             .reset(&mut self.delay)
             .map_err(|err| -> anyhow::Error { anyhow!("Missing attribute: {:?}", err) })?;
@@ -152,7 +152,7 @@ impl<'a> TankSensor<'a> {
         anyhow::Ok(sensor_data.temperature / 10_f32)
     }
 
-    pub fn tank_sensor_voltage(&mut self) -> anyhow::Result<f32> {
+    pub async fn tank_sensor_voltage(&mut self) -> anyhow::Result<f32> {
         self.tank_power.set_high()?;
         //let stabilize
         self.delay.delay_ms(100);