add mcp interrupt processing commands, find, reset

src/commands.mjs

@@ -99,14 +99,28 @@ export const pin = {
   },
   // will create packet to determine pin caused interrupt, packet will come from interrupt module
   interrupt: {
-    find: async function (packet) {
-      console.log('interrupt fired',packet)
-      return Promise.resolve({cmd:null})
+    reset: async function (port) {
+      console.log('resetting interrupt for port', (port ? 'B' : 'A'))
+      return await this.bus.read(sreg(PIN.cmd.intcap,port))
+    },
+    find: async function (inter) {
+      console.log('lookup info on device and port for pin fired',inter.pin, inter.times)
+      let port = null
+      let packet = {pins:'all',reg:'intf', port:port}
+      let res = await this.pin.status(packet)
+      this.pin.interrupt.reset()
+      let pin = _.byteFormat(res.status.port, { in: 'ARY', out: 'PLC' })[0]
+      console.log('pin that caused the interrupt', pin)
+      // found it now tell someone what relay(s) to fire
+      res.pin = pin
+      res.times = inter.times
+      res.inter = inter.pin
+      return res
     },
     report: ()=>{}, // come here after determining which pin to report to requester
-    async: async ()=>{}
   }
-}
+
+} // end pin.
 
 const parsePins = function(pins) {
   if (typeof pins==='number') pins = [pins]