From 0bcfedb77aeca23f2605f38da58d0e65af1f4114 Mon Sep 17 00:00:00 2001
From: Finn Dane <finn@finndane.nl>
Date: Sat, 9 Sep 2023 21:13:58 +0200
Subject: [PATCH] adds oscilloscope

---
 oscilloscope/oscilloscope.lua | 45 +++++++++++++++++++++++++++++++++++
 oscilloscope/readme.md        | 23 ++++++++++++++++++
 2 files changed, 68 insertions(+)
 create mode 100644 oscilloscope/oscilloscope.lua
 create mode 100644 oscilloscope/readme.md

diff --git a/oscilloscope/oscilloscope.lua b/oscilloscope/oscilloscope.lua
new file mode 100644
index 0000000..f2924be
--- /dev/null
+++ b/oscilloscope/oscilloscope.lua
@@ -0,0 +1,45 @@
+local side = "right"
+
+local interval = 0.05
+
+local trigger = function(previous, current)
+    return current > 0
+end
+
+local mon = peripheral.find("monitor")
+
+local values = {}
+local previous = rs.getAnalogInput(side)
+local curr = nil
+while true do
+    os.pullEvent("redstone")
+    curr = rs.getAnalogInput(side)
+    if trigger(previous, curr) then break end
+    previous = curr
+end
+
+values[1] = curr
+
+mon.setTextScale(0.5)
+local monX, monY = mon.getSize()
+
+print("Triggered!")
+for i = 2,monX do
+    sleep(interval) 
+    values[i] = rs.getAnalogInput(side)
+end
+
+mon.setBackgroundColor(colors.black)
+mon.setCursorBlink(false) 
+mon.clear()
+ 
+local prevX = 1
+local prevY = values[1] * (monY-1)/15
+for x, y in pairs(values) do
+    y = y * (monY-1)/15
+    term.redirect(mon)
+    paintutils.drawLine(prevX, monY-prevY, x, monY-y, colors.green)
+    term.redirect(term.native())
+    prevX = x
+    prevY = y 
+end
diff --git a/oscilloscope/readme.md b/oscilloscope/readme.md
new file mode 100644
index 0000000..30f1dc4
--- /dev/null
+++ b/oscilloscope/readme.md
@@ -0,0 +1,23 @@
+# Oscilloscope
+Oscilloscope with customizable trigger and polling rate.
+
+## Setup
+1. Open the script in the editor
+2. Set the side wich the redstone signal will be read from
+3. Set the interval at which the signal will be polled (setting it below 0.05 will not give more resolution as this is the tickspeed)
+4. (Optional) Customize the trigger function to trigger when you want it to (see examples below).
+
+### Example triggers
+Trigger when receiving full signal:
+```lua
+local trigger = function(previous, current)
+    return current == 15
+end
+```
+
+Triggers when the difference in the measured signals is more than positive 7:
+```lua
+local trigger = function(previous, current)
+    return (current - previous) > 7
+end
+```