Fixed STOP bug

When connected via USB and using the dashboard the STOP button was not working.

Author: fgrossman

src/connections/connection.ts

@@ -648,6 +648,7 @@ abstract class Connection {
         this.startReaduntil("KeyboardInterrupt:");
         await this.writeToDevice("\r" + this.CTRL_CMD_KINTERRUPT);  // ctrl-C to interrupt any running program
         let result = await this.haltUntilRead(1, 20);
+    
         if (result == undefined) {
             this.startReaduntil(">>>");
             await this.writeToDevice("\r" + this.CTRL_CMD_NORMALMODE);  // ctrl-C to interrupt any running program
@@ -656,17 +657,22 @@ abstract class Connection {
                 return true;
             }
         }
+    
         //try multiple times to get to the prompt
         let gotToPrompt = false;
         for (let i = 0; i < 20; i++) {
             this.startReaduntil(">>>");
-            await this.writeToDevice("\r" + this.CTRL_CMD_KINTERRUPT);
-            result = await this.haltUntilRead(2, 5); //this should be fast
+            await this.writeToDevice("\r" + this.CTRL_CMD_KINTERRUPT + this.CTRL_CMD_KINTERRUPT);
+            result = await this.haltUntilRead(0, 5); //this should be fast
             if (result != undefined && result.length > 0) {
                 gotToPrompt = true;
                 break;
             }
         }
+
+        this.startReaduntil(">>>");
+        await this.writeToDevice("\r" + this.CTRL_CMD_NORMALMODE);  // ctrl-C to interrupt any running program
+        result = await this.haltUntilRead(1, 20);
         return gotToPrompt;
     }
     async prepareForStop() {