From 1babb6d0c723fa08fcbf8e48a0eeee476a42cd39 Mon Sep 17 00:00:00 2001
From: Damien George <damien.p.george@gmail.com>
Date: Mon, 23 Feb 2015 22:14:54 +0000
Subject: [PATCH] docs: Update timer tutorial to reflect new behaviour of
timer.
---
docs/tutorial/timer.rst | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/docs/tutorial/timer.rst b/docs/tutorial/timer.rst
index 22cfc012e..fee01e17b 100644
--- a/docs/tutorial/timer.rst
+++ b/docs/tutorial/timer.rst
@@ -26,12 +26,14 @@ it's not yet initialised. So let's initialise it to trigger at 10 Hz
Now that it's initialised, we can see some information about the timer::
>>> tim
- Timer(4, prescaler=255, period=32811, mode=0, div=0)
+ Timer(4, prescaler=624, period=13439, mode=UP, div=1)
The information means that this timer is set to run at the peripheral
-clock speed divided by 255, and it will count up to 32811, at which point
-it triggers an interrupt, and then starts counting again from 0. These
-numbers are set to make the timer trigger at 10 Hz.
+clock speed divided by 624+1, and it will count from 0 up to 13439, at which
+point it triggers an interrupt, and then starts counting again from 0. These
+numbers are set to make the timer trigger at 10 Hz: the source frequency
+of the timer is 84MHz (found by running ``tim.source_freq()``) so we
+get 84MHz / 625 / 13440 = 10Hz.
Timer counter
-------------
--
GitLab