From aaab8a34c9606bdd1bd20b9347e193c9c904f38f Mon Sep 17 00:00:00 2001
From: Anton Veretenenko <anton@veretenenko.ru>
Date: Tue, 6 Oct 2015 08:35:05 +0500
Subject: [PATCH] MSP430 USI SPI Library: MOSI, MISO and SCK pins should be
 released from SPI hardware when SPI.end() called.

---
 hardware/msp430/libraries/SPI/utility/usi_spi.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hardware/msp430/libraries/SPI/utility/usi_spi.cpp b/hardware/msp430/libraries/SPI/utility/usi_spi.cpp
index a03fd6ae03f..845f8c964ea 100644
--- a/hardware/msp430/libraries/SPI/utility/usi_spi.cpp
+++ b/hardware/msp430/libraries/SPI/utility/usi_spi.cpp
@@ -62,6 +62,7 @@ void spi_initialize(void)
 
 void spi_disable(void) {
     USICTL0 |= USISWRST;        // put USI in reset mode
+    USICTL0 &= ~(USIPE5 | USIPE6 | USIPE7);
 }
 
 /**