Hi I have had this /exact/ same issue with MICAz motes in TinyOS-2.x! I compiled and recompiled apps/null as provided with the tos2 download but the current consumption for my motes was /always/ well over the suggested 5-10uA by at least around 100uA, usually more like 400-500. I found that /most/ motes ran at the expected <10uA but only if they were run from a supply of about 2.3-2.4 volts. I tried numerous measuring devices and am confident the readings were correct. didn't find a resolution on the list as no-one had the same problem somehow. Quite glad someone else is experiencing the same problem so it's not (necessarily) something I've somehow done! :-) If you do work it out I'd love to know! Cheers. -Ben
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Carlos Gil Soriano Sent: 18 December 2007 16:18 To: tinyos-help@millennium.berkeley.edu Subject: [Tinyos-help] Power-down ADC on MicaZ ATMega128 Hi, I am working on monitoring consumption in micaZ motes. I have slept both the micro and the radio. So consumption must be above 20 uA (from the radio without WD nor battery monitor) plus 20 uA from ATMega. I have achieved a minimum consuption above 400uA on micaZ platform. Taking a look to the ATMega datasheet (page 355) it is suppossed that over 300 uA are from ADC. I have tried to power-down the ADC, but results imposible for me. The code that I have used is cbi(ADCSRA, ADEN); I guess that it should clear ADEN bit in ADCSRA register (as shown in page 232 of ATMega datasheet). Can anyone help me? I am on tinyOs1.15, but not matter if someone can point out a solution for T1 or T2. Thanks and merry X`mas! ******************************************************************************* Please consider the environment before printing this email. ******************************************************************************* This email and any files transmitted with it are intended solely for the use of the individual or entity to whom they are addressed and may not be divulged to any third party without the express permission of the originator. Any views expressed in this message are those of the individual sender, except where the sender specifically states them to be the views of Thales Research & Technology (UK) Limited. *******************************************************************************
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