also, once all that is settled, make sure that you are not
trying to draw too much current from the pin to turn on your
sensor. The ATMEGA specs say 40mA max, I don't have the telos
chip specs but it's probably similar. Anyway I think that is
pushing it, I'd be more comfortable with <10mA.
MS
Matthew J Whelan wrote:
The output voltage of the GIO set high should be the about same as your
battery voltage. Do you have the P2.0 pin setup right?
P2SEL &= ~(0x01); //Sets P2.0 to GIO
P2DIR |= 0x01; //Sets P2.0 to output
P2OUT |= 0x01; // Sets P2.0 high
What about the P6.3 (since the ADC3 input is wired to pin 10 as well)?
P6SEL &= ~(1<<3); //Sets P6.3 to GIO
P6DIR |= ~(1<<3); //Sets P6.3 to input
Is there some significant load on your signal which is causing it to
drop in voltage?
Regards,
Matt
[EMAIL PROTECTED] wrote: -----
To: [email protected]
From: pinky tejwani <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
Date: 02/15/2006 02:21PM
Subject: [Tinyos-help] GIO -- Output Voltage.
Hello All,
I have written a code for bit-banging using the TOSH macros for
General I/O pins.
Platform - TelosB/TmoteSky
The voltage that I get on the pin 10 of U2 connector is 1.3 or 1.5 V
maximum.
The aim of the exercise is to use one of the digital output pins to
switch on/off a sensor. Can someone tell me if there is a way to make
the digital output voltage to be above 2 V ?
( I am trying to avoid using an external circuit to do that )
Hope to hear from someone.
Thanks,
Pinky Tejwani.
Clemson University.
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