According to the Telos rev.B datasheet, the SHT11 device is powered by pin P1.7/TA2 (#19 from MSP430F1611). I think the high level would be Vcc. You can use the internal ADC12 converter to get the AVcc voltage (using the constant 'SUPPLY_VOLTAGE_HALF_CHANNEL' or input channel number 11).
Regards, Jose ----- Mensaje original ----- De: Yanbo SHOU <[email protected]> Fecha: Martes, Abril 19, 2011 8:55 ombr Asunto: [Tinyos-help] How to convert RAW data to degree Celsius for Telos B A: [email protected] > Hello, > > I would like to know how to convert RAW data to degree Celsius > for Telos > B mote which uses Sensirion Sht11 as temperature and humidity sensor. > > I've checked the Sht11 data sheet, and it seems that the > conversion > formula depends on the voltage value of Sht11 (Page 9, top right). > > So I'd like to know is it possible to get the voltage value of > Sht11 > sensor on my Telos B mote ? Or it's just a constant ? > > Best regards. > > p.s. Sensirion Sht11 data sheet : > http://www.sensirion.com/en/pdf/product_information/Datasheet- > humidity-sensor-SHT1x.pdf > > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://www.millennium.berkeley.edu/cgi- > bin/mailman/listinfo/tinyos-help > ╔══════════════════════════════════════╗ ║ José A. Tarifa Galisteo ║ ║ Estudiante Ingeniería de Telecomunicación ║ Escuela Superior de Ingenieros - U. Sevilla ║ http://alumno.us.es/j/jostargal/ ╚══════════════════════════════════════╝
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