From 200cddc34685bc29d4420a1a4546ad1f1a31ef5f Mon Sep 17 00:00:00 2001
From: Sebastien Bourdeauducq <sb@m-labs.hk>
Date: Sat, 5 Mar 2016 00:51:13 +0800
Subject: [PATCH] coredevice/i2c: fix exception message

---
 artiq/coredevice/i2c.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/artiq/coredevice/i2c.py b/artiq/coredevice/i2c.py
index c48b89672..b406b34ea 100644
--- a/artiq/coredevice/i2c.py
+++ b/artiq/coredevice/i2c.py
@@ -64,7 +64,7 @@ class TCA6424A:
                 raise I2CError("TCA6424A failed to ack command")
             for i in range(3):
                 if not i2c_write(self.busno, value >> 16):
-                    raise I2CError("TCA6424A failed to ack command")
+                    raise I2CError("TCA6424A failed to ack data")
                 value <<= 8
         finally:
             i2c_stop(self.busno)