Continue implementing regulation

config.example.json

@@ -0,0 +1,27 @@
+{
+	"regulator": {
+		"power_bias_watts": 3000,
+		"monophase_volts": 235
+	},
+	"mattermost": {
+		"base": "https://mattermost.example.com",
+		"token": ""	
+	},
+	"prometheus": {
+		"base": "http://prometheus.example.com:9090/"
+	},
+	"easee_token_path": "./.easee_token",
+	"chargers": [
+
+	],
+	"regulator": {
+		"site_id": 0,
+		"circuit_id": 0,
+		"power_bias_watts": 3000.0,
+		"monophase_volts": 240,
+		"polling_interval": 15,
+		"p": 0.2,
+		"i": 0.1,
+		"d": 0
+	}
+}

src/config.rs

@@ -26,12 +26,19 @@ pub struct Config {
     pub prometheus: Prometheus,
     pub mattermost: Mattermost,
     pub chargers: Vec<Charger>,
+    pub regulator: Option<Regulator>,
 }
 
 #[derive(Debug,Deserialize)]
 pub struct Regulator {
-    power_bias_watts: f64,
+    pub site_id: u32,
-    monophase_volts: f64,
+    pub circuit_id: i64,
+    pub power_bias_watts: f64,
+    pub monophase_volts: f64,
+    pub polling_interval: u64,
+    pub p: f64,
+    pub i: f64,
+    pub d: f64,
 }
 
 pub fn load_config(path: &str) -> Result<Config> {

src/control.rs

@@ -1,9 +1,11 @@
-use std::collections::HashMap;
+ use std::collections::HashMap;
 use std::convert::Infallible;
 use std::sync::{Arc, Mutex};
+use std::thread;
+use std::time::Duration;
 
-use anyhow::Result;
+use anyhow::{anyhow, Result};
-use easee::api::{self, ChargerOpMode, Context};
+use easee::api::{self, ChargerOpMode, Circuit, Context, SetCurrent, Triphase};
 use easee::observation::{self, Event, ObservationError};
 use tracing::{error, info, warn};
 
@@ -19,6 +21,7 @@ struct Charger {
     current: Option<(f64, f64, f64)>
 }
 
+
 impl Charger {
     pub fn from_api(inner: api::Charger, configs: &[config::Charger]) -> Self {
         let owners = configs.iter()
@@ -36,11 +39,15 @@ pub fn start(mut ctx: Context, config: Config, mut chargers: Vec<api::Charger>)
     let mattermost = mattermost::Context::new(config.mattermost.base, &config.mattermost.token)?;
     let mut stream = observation::Stream::from_context(&mut ctx)?;
 
-    // TODO
     let chargers: HashMap<String, Charger> = chargers.into_iter()
         .filter_map(|c| {
-            stream.subscribe(&c.id).ok()?;
+            stream.subscribe(&c.id)
+                .map_err(|e| error!("Cannot subscribe {}: {e}", &c.id))
+                .ok()?;
             let name = c.name.clone();
+            c.enable_smart_charging(&mut ctx)
+                .map_err(|e| error!("Cannot enable smart charging on {}: {e}", &c.id))
+                .ok()?;
             Some((name, Charger::from_api(c, &config.chargers)))
         })
         .collect();
@@ -50,11 +57,33 @@ pub fn start(mut ctx: Context, config: Config, mut chargers: Vec<api::Charger>)
     // TODO get channel on a per-charger basis
     let channel = mattermost.channel("9d9o1a5qf7fofk3wqfa493gkfe");
 
-
-
     info!("Controller started");
     mattermost.send_to_channel(&channel, "Easee Controller started")?;
 
+    if let Some(reg) = config.regulator {
+
+        let circuit = ctx.sites_details()?
+            .into_iter().find(|s| s.site.id == reg.site_id)
+            .ok_or(anyhow!("Invalid site id {}", reg.site_id))?
+            .circuits.into_iter()
+            .find(|c| c.id == reg.circuit_id)
+            .ok_or(anyhow!("Invalid circuit id {}", reg.circuit_id))?;
+
+        let controller =  Controller {
+            bias: Triphase::from(reg.power_bias_watts),
+            ctx,
+            prom: PromClient::new(config.prometheus.base),
+            circuit,
+            delay: Duration::from_secs(reg.polling_interval),
+            p: reg.p,
+            i: reg.i,
+            d: reg.d,
+        };
+
+        let _ctrl = thread::spawn(move || controller.adjust_power());
+
+    }
+
     loop {
 
         let evt = match stream.recv() {
@@ -108,14 +137,47 @@ fn handle_event(evt: Event, charger: &mut Charger, ctx: &mattermost::Context, ch
     }
 }
 
-pub fn adjust_power(prom: PromClient) -> Result<()> {
+struct Controller {
-
+    /// Power bias in W
-    loop {
+    bias: Triphase,
-        let export_power = prom.current_power()?;
+    ctx: Context,
-
+    prom: PromClient,
-        
+    circuit: Circuit,
-
+    delay: Duration,
-    }
+    p: f64,
-
+    i: f64,
-
+    d: f64,
+}
+
+impl Controller {
+
+    pub fn adjust_power(mut self) -> Result<()> {
+
+        let voltage = 240f64;
+        let time_to_live = Some(self.delay.as_secs() as i32);
+
+        let mut current = self.circuit.dynamic_current(&mut self.ctx)?;
+        let mut integrated = Triphase::default();
+        let mut prev_available_current = Triphase::default();
+
+        loop {
+            let export_power = self.prom.current_power()?;
+            let available_power = export_power - self.bias;
+            let available_current = available_power * (1.0/voltage);
+
+            integrated = available_current * 0.3 + integrated * (1.0 - 0.3);
+            let differentiated = available_current - prev_available_current;
+            prev_available_current = available_current;
+            
+            let delta = available_current * self.p
+                                + differentiated * self.d
+                                + integrated * self.i;
+
+            current = current + delta;
+            self.circuit.set_dynamic_current(&mut self.ctx,  SetCurrent { time_to_live, current })?;
+
+            thread::sleep(self.delay);
+
+        }  
+    }
 }

src/main.rs

@@ -183,7 +183,7 @@ fn main() -> Result<()> {
         Mode::Stream => stream(&args.charger_id)?,
         Mode::Power => {
             let pow = prom::PromClient::new(config.prometheus.base).current_power()?;
-            println!("P1:{}W P2:{}W P3:{}W", pow.0, pow.1, pow.2);
+            println!("P1:{}W P2:{}W P3:{}W", pow.phase1, pow.phase2, pow.phase3);
         },
         Mode::Control => {
             let chargers = load_chargers(&mut ctx, &args.charger_id)?;

src/prom.rs

@@ -1,6 +1,7 @@
 use std::collections::HashMap;
 
 use anyhow::{anyhow, bail, Result};
+use easee::api::Triphase;
 use ureq::serde::Deserialize;
 
 use tracing::warn;
@@ -52,7 +53,7 @@ impl PromClient {
         PromClient { base, power_query_url }
     }
 
-    pub fn current_power(&self) -> Result<(f64, f64, f64)> {
+    pub fn current_power(&self) -> Result<Triphase> {
         let reply: PromReply = ureq::get(&self.power_query_url).call()?.into_json()?;
 
         let PromReply::Success {
@@ -74,11 +75,11 @@ impl PromClient {
             }
         }
 
-        Ok((
+        Ok(Triphase {
-            r.0.ok_or_else(|| anyhow!("Missing phase a"))?,
+            phase1: r.0.ok_or_else(|| anyhow!("Missing phase a"))?,
-            r.1.ok_or_else(|| anyhow!("Missing phase b"))?,
+            phase2: r.1.ok_or_else(|| anyhow!("Missing phase b"))?,
-            r.2.ok_or_else(|| anyhow!("Missing phase c"))?,
+            phase3: r.2.ok_or_else(|| anyhow!("Missing phase c"))?,
-        ))
+        })
 }
 
 }