From 60cf6d6b5a535f7bf70e5f6e173bb36ad3bb8233 Mon Sep 17 00:00:00 2001
From: Terence Boldt <terence@boldt.ca>
Date: Sat, 5 Dec 2020 00:46:33 +0000
Subject: [PATCH] Change server to test writing 4 KiB to II

---
 RaspberryPi/server.js | 22 -------------
 RaspberryPi/test.js   | 74 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 74 insertions(+), 22 deletions(-)
 delete mode 100644 RaspberryPi/server.js
 create mode 100644 RaspberryPi/test.js

diff --git a/RaspberryPi/server.js b/RaspberryPi/server.js
deleted file mode 100644
index b1a8b77..0000000
--- a/RaspberryPi/server.js
+++ /dev/null
@@ -1,22 +0,0 @@
-var fs = require('fs');
-var gpio = require('onoff').Gpio;
-
-var output = new gpio(4, 'high', {activeLow: true});
-var input = new gpio(6, 'in', 'both');
-
-function onCleanUp() {
-  output.unwatchAll();
-  output.unexport();
-  input.unexport();
-}
-
-function onStatusChanged(err, value) {
-  if (err) {
-  }
-  else {
-  }
-}
-
-input.watch(onStatusChanged);
-
-process.on('SIGINT', onCleanUp);
diff --git a/RaspberryPi/test.js b/RaspberryPi/test.js
new file mode 100644
index 0000000..3deb7f9
--- /dev/null
+++ b/RaspberryPi/test.js
@@ -0,0 +1,74 @@
+var fs = require('fs');
+var gpio = require('onoff').Gpio;
+
+var out_write = new gpio(5, 'high', {activeLow: true});
+var out_read = new gpio(11, 'high', {activeLow: true});
+var out_command1 = new gpio(9, 'low', {activeLow: false});
+var out_command2 = new gpio(10, 'low', {activeLow: false});
+var out_bit3 = new gpio(22, 'low', {activeLow: false});
+var out_bit2 = new gpio(27, 'low', {activeLow: false});
+var out_bit1 = new gpio(17, 'low', {activeLow: false});
+var out_bit0 = new gpio(4, 'low', {activeLow: false});
+var in_write = new gpio(12, 'in', 'both');
+var in_read = new gpio(16, 'in', 'both');
+var in_command1 = new gpio(20, 'in');
+var in_command2 = new gpio(21, 'in');
+var in_bit3 = new gpio(26, 'in');
+var in_bit2 = new gpio(19, 'in');
+var in_bit1 = new gpio(13, 'in');
+var in_bit0 = new gpio(6, 'in');
+
+function onCleanUp() {
+  in_write.unwatchAll();
+  in_write.unexport();
+}
+
+function onWriteChanged(err, value) {
+  if (err) {
+  }
+  else {
+    //console.log(`value: ${value}`); 
+  }
+}
+
+number = 0;
+startTime = Date.now();
+
+function onReadChanged(err, value) {
+  if (err) {
+  }
+  else {
+    if (value == 1) {
+      //console.log("Nibble has been read");
+      out_write.writeSync(0);
+    }
+    else {
+      writeNibble(number++);
+      if(number >= 4096) {
+        seconds = Date.now() - startTime; 
+	console.log(`Sent 2 KiB in ${seconds} milliseconds.`);
+        process.exit() 
+      }
+    }
+  }
+}
+
+in_write.watch(onWriteChanged);
+in_read.watch(onReadChanged);
+
+function writeNibble(nibble) {
+  out_bit3.writeSync((nibble&8)>>3);
+  out_bit2.writeSync((nibble&4)>>2);
+  out_bit1.writeSync((nibble&2)>>1);
+  out_bit0.writeSync(nibble&1);
+  out_command1.writeSync(0);
+  out_command2.writeSync(0);
+  out_read.writeSync(0);
+  out_write.writeSync(1);
+}
+
+writeNibble(0);
+
+process.on('SIGINT', onCleanUp);
+
+