From 11d6db9d685f1174fc5bfe5abdb5c409bb94f8a4 Mon Sep 17 00:00:00 2001
From: Peter Hinch <peter@hinch.me.uk>
Date: Sun, 25 Nov 2018 10:56:15 +0000
Subject: [PATCH] Add timeout sample. Remove make axtls from buildnew script.

---
 README.md                 |  3 ++-
 fastbuild/buildnew        |  1 -
 timed_function/timeout.py | 15 +++++++++++++++
 3 files changed, 17 insertions(+), 2 deletions(-)
 create mode 100644 timed_function/timeout.py

diff --git a/README.md b/README.md
index 0615510..d6e49e4 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,8 @@ Raise an exception if a firmware build is earlier than a given date.
 
 # timed_function
 
-Time a function's execution using a decorator.
+Time a function's execution using a decorator. Also a way to implement timeouts
+using a closure.
 
 # ESP8266 (MQTT benchmark)
 
diff --git a/fastbuild/buildnew b/fastbuild/buildnew
index 257ae95..b4cda60 100755
--- a/fastbuild/buildnew
+++ b/fastbuild/buildnew
@@ -17,7 +17,6 @@ cd ../esp8266
 make clean
 cd ../unix
 make clean
-make -j 8 axtls
 # If you're going to enable deplibs: see micropython/README
 #make deplibs
 make -j 8
diff --git a/timed_function/timeout.py b/timed_function/timeout.py
new file mode 100644
index 0000000..6788a74
--- /dev/null
+++ b/timed_function/timeout.py
@@ -0,0 +1,15 @@
+# Implement a timeout using a closure
+import utime
+
+def to(t):
+    tstart = utime.ticks_ms()
+    def foo():
+        return utime.ticks_diff(utime.ticks_ms(), tstart) > t
+    return foo
+
+# Usage
+t = to(3000)
+for _ in range(10):
+    print(t())
+    utime.sleep(0.5)
+