Re: TI-H: Re: Using the parallel port for I2C communications?

Re: TI-H: Re: Using the parallel port for I2C communications?

• To: ti-hardware@lists.ticalc.org
• Subject: Re: TI-H: Re: Using the parallel port for I2C communications?
• From: Grant Stockly <gussie@stockly.com>
• Date: Mon, 24 May 1999 14:43:19 -0800
• Delivered-To: ti-hardware-outgoing@towerguard.unix.edu.sollentuna.se
• Delivered-To: ti-hardware@lists.ticalc.org
• In-Reply-To: <01ea01bea62d$19721a80$c9648ed1@station008.rdtech.com>
• Reply-To: ti-hardware@lists.ticalc.org

>In order to use the joystick port to read a temp sensor, it appears
>that all I have to do is attach a thermistor to pins 1 and 3 (X pos of
>joystick A), and write a value to port 201h, then wait for bit 0 of the
>status byte to return to 0.  The time interval determines the resistance
>according to the formula:
> 
>R = (T - 24.2)/.001
> 
Piece of cake, anybody done it before?

On the AIIE.

• TI-H: Re: Using the parallel port for I2C communications?
• From: "David Knaack" <dknaack@geocities.com>

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