From ee20db06b5116fbaa7bbdfa7a3db9402e85e0c30 Mon Sep 17 00:00:00 2001
From: mlundinse <lundin@mlu.mine.nu>
Date: Fri, 30 Aug 2013 19:19:17 +0200
Subject: Handle i2c slave bug (quick fix)

Quick fix for i2c master / slave problems
---
 libmaple/i2c.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libmaple/i2c.c b/libmaple/i2c.c
index bbbf123..5000cf7 100644
--- a/libmaple/i2c.c
+++ b/libmaple/i2c.c
@@ -348,8 +348,8 @@ void _i2c_irq_handler(i2c_dev *dev) {
      * Add Slave support
      */
 
-    /* Check to see if MSL master slave bit is set */
-    if ((sr2 & I2C_SR2_MSL) != I2C_SR2_MSL) { /* 0 = slave mode 1 = master */
+    /* Check to see if that a master transfer is not active */
+    if (dev->state != I2C_STATE_BUSY) { /* Master Xfer and no place else sets I2C_STATE_BUSY */
 
         /* Check for address match */
         if (sr1 & I2C_SR1_ADDR) {
-- 
cgit v1.2.3