You have to add a pull-up network to both I2C lines Data and Clk. On the MDA300 board, just put a 10kOhm resistor between the Data and Vcc pins, and another one between Clk and Vcc.
Chris ________________________________ From: Antonio Prados Vilchez [mailto:[EMAIL PROTECTED] Sent: June 27, 2008 7:50 AM To: Christopher Leung; tinyos-help@millennium.berkeley.edu Subject: RE: [Tinyos-help] ADC&MDA300 Thanks for your help Christopher. I'm following the steps to read from the ADC ADS7828 in the MDA300 board, using the I2C interface. However, event I2CPacket.writeDone never occurs. I thought that it could be because of a mistake in my code, but I did a bit of research about the sensors of the MTS300 sensorboard which use the I2C interface (Microphone and magnetometer). In those components it also happens, the event I2CPacket.writeDone is never signaled. Does anybody know how to solve this problem? Thanks in advance. -----Mensaje original----- De: Christopher Leung [mailto:[EMAIL PROTECTED] Enviado el: lun 23/06/2008 18:30 Para: Antonio Prados Vilchez; tinyos-help@millennium.berkeley.edu Asunto: RE: [Tinyos-help] ADC&MDA300 You also need to use the interface Resource from the Atm128I2CMasterC component. Here are the steps you will need to do: Resource.request, wait for Resource.granted, I2C.write, wait for I2C.writeDone, I2C.read, wait for I2C.readDone, Resource.release. It's important that you release the I2C resource especially if you have other components relying on it. Chris ________________________________ From: Antonio Prados Vilchez [mailto:[EMAIL PROTECTED] Sent: Mon 6/23/2008 5:16 AM To: Christopher Leung; tinyos-help@millennium.berkeley.edu Subject: RE: [Tinyos-help] ADC&MDA300 Thanks for your help, Christopher. Now I'm trying to use the I2C interface, as you said, but it doesn´t work. I get a lot of compiling errors in the I2CPacket and Atm128I2CMasterC files, so I think it's because of the instantiation. Am I doing it right? Should I upgrade my TinyOS files to a newer version? The way I instantiate these interfaces and components is: ----------- implementation { ... components new Atm128I2CMasterC(); ... App.I2CPacket -> Atm128I2CMasterC; } ----------- module SensorToRadioC { uses { ... interface I2CPacket<TI2CBasicAddr>; } } ----------- Thanks in advance ________________________________ Este mensaje se dirige exclusivamente a su destinatario, y puede contener información confidencial sometida a secreto profesional, o cuya divulgación esté legalmente prohibida.Cualquier opinión en él contenida es exclusiva de su autor y no representa necesariamente la opinión de la empresa. Si ha recibido este mensaje por error, le rogamos nos lo comunique de forma inmediata por esta misma vía y proceda a su eliminación, así como a la de cualquier documento adjunto al mismo. El correo electrónico vía Internet no es seguro y no se puede garantizar que no haya errores ya que puede ser interceptado, modificado, perdido o destruido, o contener virus. Cualquier persona que se ponga en contacto con nosotros por correo electrónico se considerará que asume estos riesgos. This e-mail is addressed exclusively to the recipient and may contain privileged information under a professional confidential agreement or it may be against the law to disclose its contents. Any opinion contained in it belongs exclusively to his/her author and does not necessarily reflect the company's view. If you receive this e-mail in error, please let us know immediately (by return e-mail) and proceed to its destruction, as well as any document attached to it. The sending of e-mails through the Internet is not safe and, therefore, error-free communications cannot be guaranteed, as they can be intercepted, changed, misled or destroyed or they might contain a virus. Any user contacting us through e-mails shall be understood to be assuming these risks. ________________________________
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