From 40c159fcf5c5ecf9edec8e7ada49c82ece19e6d0 Mon Sep 17 00:00:00 2001
From: Richard Allen <rsaxvc@gmail.com>
Date: Sat, 3 Jun 2017 00:55:36 -0500
Subject: [PATCH] Remove a number of extui instructions

Using a uint8_t for the loop counter resulted
in a number of 8-bit extract (extui) instructions.
Using a uint32_t prevents this.
---
 libraries/SPI/SPI.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/SPI/SPI.cpp b/libraries/SPI/SPI.cpp
index 08e08f9cc..de528e0b5 100644
--- a/libraries/SPI/SPI.cpp
+++ b/libraries/SPI/SPI.cpp
@@ -400,7 +400,7 @@ void SPIClass::writeBytes_(uint8_t * data, uint8_t size) {
 
     uint32_t * fifoPtr = (uint32_t*)&SPI1W0;
     uint32_t * dataPtr = (uint32_t*) data;
-    uint8_t dataSize = ((size + 3) / 4);
+    uint32_t dataSize = ((size + 3) / 4);
 
     while(dataSize--) {
         *fifoPtr = *dataPtr;