succd: add safety status to web frontend

succbone/succd/http.go

@@ -60,6 +60,7 @@ func (d *daemon) httpIndex(w http.ResponseWriter, r *http.Request) {
 	volts, mbar := d.pirani()
 	rp := d.rpGet()
 	dp := d.dpGet()
+  failsafe, highpressure := d.safetyStatusGet()
 
 	loadB, err := os.ReadFile("/proc/loadavg")
 	load := "unknown"
@@ -74,6 +75,8 @@ func (d *daemon) httpIndex(w http.ResponseWriter, r *http.Request) {
 	}
 
 	templateIndex.Execute(w, map[string]any{
+		"failsafe":     failsafe,
+		"highpressure": highpressure,
 		"volts":        formatVolts(volts),
 		"mbar":         formatMbar(mbar),
 		"rp":           rp,
@@ -107,7 +110,10 @@ func (d *daemon) httpStream(w http.ResponseWriter, r *http.Request) {
 			rp := d.rpGet()
 			dp := d.dpGet()
 			rough, high := d.vacuumStatusGet()
+      failsafe, highpressure := d.safetyStatusGet()
 			v := struct {
+        Failsafe     bool
+        HighPressure bool
 				Volts        string
 				Mbar         string
 				MbarFloat    float32
@@ -116,6 +122,8 @@ func (d *daemon) httpStream(w http.ResponseWriter, r *http.Request) {
 				RoughReached bool
 				HighReached  bool
 			}{
+        Failsafe:     failsafe,
+        HighPressure: highpressure,
 				Volts:        formatVolts(volts),
 				Mbar:         string(formatMbar(mbar)),
 				MbarFloat:    mbar,

succbone/succd/index.html

@@ -94,6 +94,14 @@ td > span {
             <th>Status</th>
             <td id="status" colspan="4">OK</td>
         </tr>
+        <tr>
+            <th>Failsafe</th>
+            <td id="failsafe" colspan="4">OK</td>
+        </tr>
+        <tr>
+            <th>Diffusion Pump Lockout</th>
+            <td id="highpressure" colspan="4">OK</td>
+        </tr>
     </table>
 </p>
 <p style="margin-top: 2em;">
@@ -240,6 +248,8 @@ window.addEventListener("load", (_) => {
     console.log("s u c c");
 
     let status = document.querySelector("#status");
+    let failsafe = document.querySelector("#failsafe");
+    let highpressure = document.querySelector("#highpressure");
     let volts = document.querySelector("#volts");
     let mbar = document.querySelector("#mbar");
     let ping = document.querySelector("#ping");
@@ -280,6 +290,21 @@ window.addEventListener("load", (_) => {
             const data = JSON.parse(event.data);
             volts.innerHTML = data.Volts;
             mbar.innerHTML = data.Mbar;
+            failsafe.innerHTML = data.failsafe ? "ON" : "OFF";
+            if data.failsafe {
+              failsafe.innerHTML = "ON"";
+              failsafe.style = "background-color: #f06060";
+            } else {
+              failsafe.innerHTML = "OFF";
+              failsafe.style = "background-color: #60f060";
+            }
+            if data.highpressure {
+              highpressure.innerHTML = "ON";
+              highpressure.style =  "background-color: #f06060";
+            } else {
+              highpressure.innerHTML = "OFF";
+              highpressure.style = "background-color: #60f060";
+            }
             rp.innerHTML = data.RPOn ? "ON" : "OFF";
             if (data.RPOn) {
                 rp.style = "background-color: #60f060";

succbone/succd/process.go

@@ -266,6 +266,14 @@ func (d *daemon) vacuumStatusGet() (rough, high bool) {
 	return
 }
 
+func (d *daemon) safetyStatusGet() (failsafe, highPressure bool) {
+  d.mu.RLock()
+  defer d.mu.RUnlock()
+  failsafe = d.failsafe
+  highPressure = d.highPressure
+  return
+}
+
 // pumpDownPressed toggles the pump down relay for 500ms.
 func (d *daemon) pumpDownPress() {
 	d.mu.Lock()