From 0b44cd7ce2d5b7535e08e010209be67ecddeed56 Mon Sep 17 00:00:00 2001
From: Terence Boldt <terence@boldt.ca>
Date: Sat, 5 Dec 2020 02:05:35 +0000
Subject: [PATCH] Add Go speed test

---
 RaspberryPi/go/test.go | 72 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 RaspberryPi/go/test.go

diff --git a/RaspberryPi/go/test.go b/RaspberryPi/go/test.go
new file mode 100644
index 0000000..7a9a4fb
--- /dev/null
+++ b/RaspberryPi/go/test.go
@@ -0,0 +1,72 @@
+package main
+
+import (
+    "time"
+    "periph.io/x/periph/conn/gpio"
+    "periph.io/x/periph/conn/gpio/gpioreg"
+    "periph.io/x/periph/host"
+    "fmt"
+)
+
+func main() {
+    host.Init()
+
+    startTime := time.Now()
+
+    out_write := gpioreg.ByName("GPIO5")
+    out_read := gpioreg.ByName("GPIO11")
+    out_command1 := gpioreg.ByName("GPIO9")
+    out_command2 := gpioreg.ByName("GPIO10")
+    out_bit3 := gpioreg.ByName("GPIO22")
+    out_bit2 := gpioreg.ByName("GPIO27")
+    out_bit1 := gpioreg.ByName("GPIO17")
+    out_bit0 := gpioreg.ByName("GPIO4")
+    in_read := gpioreg.ByName("GPIO16")
+
+    out_command1.Out(gpio.Low)
+    out_command2.Out(gpio.Low)
+    out_read.Out(gpio.High)
+    out_write.Out(gpio.High)
+
+    for i := 0; i < 4096; i++ {
+      bit3 := gpio.Low
+      bit2 := gpio.Low
+      bit1 := gpio.Low
+      bit0 := gpio.Low
+      if ((i & 8) >> 3) == 1 {
+        bit3 = gpio.High
+      }
+      out_bit3.Out(bit3)
+      
+      if ((i & 4) >> 2) == 1 {
+        bit2 = gpio.High
+      }
+      out_bit2.Out(bit2)
+
+      if ((i & 2) >> 1) == 1 {
+        bit1 = gpio.High
+      }
+      out_bit1.Out(bit1)
+
+      if (i & 1) == 1 {
+        bit0 = gpio.High
+      }
+      out_bit0.Out(bit0)
+
+      out_write.Out(gpio.Low)
+
+      for in_read.Read() == gpio.Low {
+        in_read.WaitForEdge(-1)
+      }
+
+      out_write.Out(gpio.High)
+
+      for in_read.Read() == gpio.High {
+        in_read.WaitForEdge(-1)
+      }
+    }
+
+    elapsedTime := time.Since(startTime)
+
+    fmt.Printf("Sent 2 KiB in %s", elapsedTime)
+}