Along with verifying that you have really set the pin to OUTPUT,
make sure you are not loading it down too heavily. A '1' output
should be close to VCC.
MS
Cory Sharp wrote:
The GeneralIO interface applies to TinyOS 1.x, as well, with the main
component being MSP430GeneralIOC instead of HplMsp430GeneralIOC. -
Cory
On 9/15/06, R. Steve McKown <[EMAIL PROTECTED]> wrote:
On Friday 15 September 2006 03:38 am, t3lab wrote:
> I want use Gio1 pin 7 of U2 expansion connector of tmote sky module
in mode
> Exclusive digital output..
>
> I've lookek that i can set or reset that pin using:
>
> TOSH_MAKE_GIO1_INPUT();
> TOSH_MAKE_GIO1_OUTPUT();
> TOSH_SET_GIO1_PIN();
> TOSH_CLR_GIO1_PIN();
If you're using TinyOS 2.x, you can use the GeneralIO interface. GIO1
maps to
the MSP's P2.1 pin, so the configuration bits would be like:
components HplMsp430GeneralIOC, new Msp430GpioC() as GIO1, YourC;
YourC.GIO1 -> GIO1.GeneralIO;
GIO1 -> HplMsp430GeneralIOC.Port21;
Using the GeneralIO interface in YourC would use bits like:
uses interface GeneralIO as GIO1;
GIO1.makeOutput();
GIO1.clear();
GIO1.set();
> my question is... is possible settint the output voltage of
> TOSH_SET_GIO1_PIN(); instruction? now i've vcc/2 about 1,2 volt...
> is possible setting that output to vcc?
As I understand it, the MSP430 uses totem pole output drivers. A
logic 1 set
to an pin configured for digital output should generate a voltage very
close
to Vcc. Perhaps the pin really isn't set as a digital output. A
floating
input might behave as you describe.
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