Use Ben's IC2 Fan Controller as Temp Sensor

Hi all,

My onboard temp sensor seems to be dead (fixed at room temp). I dont think I am skilled enough with a soldering iron to replace it (per FAQ)

However, I am willing to try Ben's IC2 Fan Controller, which has a temp sensor.

Is there a way to for Hijack to read from Ben's temp sensor and output it into Vital Signs (or another menu entry)?

It would be great to monitor the temp again especially with summer coming around soon.

Thanks!

We really ought to work out a simple rewiring job -- route the necessary GPIO pin from the SA1100 over to the temp chip so that it can be "reset" back to normal operation (under s/w control) whenever it glitches out like that.

Anyone know of an unused GPIO pin inside this sucker?

I have a feeling I remember Hugo saying they were pretty full up on IO. Can't find where though.

If he designs stuff anything like us, he'll use every last CPU/micro feature available. We never seem to have enough IO.

Can it be reset in hardware anyway? I thought it was stuffed for life once configured the wrong way or whatever happened.

Quote:
Can it be reset in hardware anyway? I thought it was stuffed for life once configured the wrong way or whatever happened.

You can switch it back from thermostat mode but you have to do it in a funny way like hold one of the pins high for a certain amount of time and then toggle something etc... This forces it back into 1-Wire mode where you can properly reconfigure the EEPROM inside. It's quite annoying to do and you can't do it without lifting legs on the chip.