From ee22c3dc6d945262303d43e733eaac91bfcf0d9d Mon Sep 17 00:00:00 2001
From: Marti Bolivar <mbolivar@leaflabs.com>
Date: Mon, 27 Aug 2012 16:50:39 -0400
Subject: HardwareSPI: move warning into .cpp from header.

This causes the warning to be emitted at most once. As is, it can be
emitted each time HardwareSPI.h is included, which is annoying.

Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>
---
 wirish/HardwareSPI.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'wirish/HardwareSPI.cpp')

diff --git a/wirish/HardwareSPI.cpp b/wirish/HardwareSPI.cpp
index 120cd67..94985eb 100644
--- a/wirish/HardwareSPI.cpp
+++ b/wirish/HardwareSPI.cpp
@@ -38,6 +38,11 @@
 #include <wirish/wirish.h>
 #include <wirish/boards.h>
 
+#if CYCLES_PER_MICROSECOND != 72
+/* TODO [0.2.0?] something smarter than this */
+#warning "Unexpected clock speed; SPI frequency calculation will be incorrect"
+#endif
+
 struct spi_pins {
     uint8 nss;
     uint8 sck;
-- 
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