From ce3319468900321adfe339e5c9c43c29dc396a9c Mon Sep 17 00:00:00 2001
From: "W. Trevor King" <wking@drexel.edu>
Date: Wed, 19 May 2010 02:47:37 -0400
Subject: [PATCH] Allow negative voltages in
 hooke.driver.picoforce.PicoForceDriver._translate_block_info

---
 hooke/driver/picoforce.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hooke/driver/picoforce.py b/hooke/driver/picoforce.py
index a203fcb..4ab2008 100644
--- a/hooke/driver/picoforce.py
+++ b/hooke/driver/picoforce.py
@@ -261,7 +261,7 @@ class PicoForceDriver (Driver):
         ret['columns'] = ['z piezo (m)', 'deflection (m)']
 
         volt_re = re.compile(
-            'V \[Sens. (\w*)\] \(([.0-9]*) V/LSB\) ([.0-9]*) V')
+            'V \[Sens. (\w*)\] \(([.0-9]*) V/LSB\) (-?[.0-9]*) V')
         match = volt_re.match(z_piezo_info['@4:Z scale'])
         assert match.group(1) == 'ZSensorSens', z_piezo_info['@4:Z scale']
         ret['z piezo sensitivity (V/bit)'] = float(match.group(2))
-- 
2.26.2