Hi Luc,
Hmm ... being a hardware developer myself I would try:
- openning the device and looking for touch screen controller chip. This may
involve googling the part numbers of the chips that will most probably look
like it's the one. (eg. ADS7846 from TI-Burr Brown)
- once you find it, you should obtain the datasheet of the manufacturer,
have a read at it.
- work out which pins on the TSC are connected to which pins on the
processor.
- get a datasheet for the processor.
- if possible (usually possible for older 68K devices) work out how to
directly access hardware registeres - this is to get access to the SPI
controller on-board
- write new code to get data directly from the TSC
The new ARM processors may not allow you to have direct hardware access
because of the MMC, so this may be pointless. However at this point, you
should be crossing your fingers :) All the best.
H
----- Original Message -----
From: "Luc Le Blanc" <[EMAIL PROTECTED]>
Newsgroups: palm-dev-forum
To: "Palm Developer Forum" <[email protected]>
Sent: Sunday, June 18, 2006 4:05 AM
Subject: Re: Getting the processor temperature
hemonenator wrote:
Hi Luc,
I know that the touch screen controller in most devices have a temp
sensor in them. However each device is different, and you will need to
know how to access the low level hardware in order to get to this temp
sensor (usually over SPI). It's usually situated further from the
processor, and tend to reflect ambient temperature better. Some older
greyscale devices use the temp sensors to auto correct for contrast.
Any pointers on where I should look for that info?
--
Luc Le Blanc
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