From 66b68d4adaebbfbb6aee8f9a0e7c577c22484afc Mon Sep 17 00:00:00 2001
From: reiyawea <yfgao1009@gmail.com>
Date: Wed, 16 Mar 2016 17:28:24 +0800
Subject: [PATCH] add CPOL setting

---
 libraries/SPI/SPI.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libraries/SPI/SPI.cpp b/libraries/SPI/SPI.cpp
index 4e7302122..c8341b1fa 100644
--- a/libraries/SPI/SPI.cpp
+++ b/libraries/SPI/SPI.cpp
@@ -102,7 +102,10 @@ void SPIClass::setDataMode(uint8_t dataMode) {
     }
 
     if(CPOL) {
-        //todo How set CPOL???
+        SPI1P |= 1<<29;
+    } else {
+        SPI1P &= ~(1<<29);
+        //todo test whether it is correct to set CPOL like this.
     }
 
 }