[Tinyos-devel] current draw in deep sleep for telosb

[Razvan Musaloiu-E.]

Hi!

I'm running the latest CVS and today I noticed that the Null application on 
telosb draws an unusually high (and variable) amount current (around 
0.5-0.8mA). The problem seems to be in in Init.init function from 
MotePlatformC.nc from tos/platforms/telosb/. At the end of it the 
TOSH_FLASH_M25P_DP function the clock pin is put on input. By making it 
output on zero the current stabilized to the normal low values (7-8uA). I 
attached the patch with the changes. It can be aplied by running the 
following commands:
 	cd $TOSROOT
 	patch -p0 < telosb-current.diff

Can somebody confirm the problem and test this solution?

Thank you!
Razvan ME
-------------- next part --------------
Index: tos/platforms/telosb/MotePlatformC.nc
===================================================================
RCS file: /cvsroot/tinyos/tinyos-2.x/tos/platforms/telosb/MotePlatformC.nc,v
retrieving revision 1.3
diff -u -r1.3 MotePlatformC.nc
--- tos/platforms/telosb/MotePlatformC.nc	21 Mar 2007 15:11:00 -0000	1.3
+++ tos/platforms/telosb/MotePlatformC.nc	30 Jun 2007 01:03:06 -0000
@@ -52,7 +52,8 @@
 
     TOSH_SET_SIMO0_PIN();
     TOSH_MAKE_SIMO0_INPUT();
-    TOSH_MAKE_UCLK0_INPUT();
+    TOSH_MAKE_UCLK0_OUTPUT();
+    TOSH_CLR_UCLK0_PIN();
     TOSH_CLR_FLASH_HOLD_PIN();
   }