In SX Microcontrollers, SX/B Compiler and SX-Key Tool, mjcaisse wrote:

So... obviously I have missed something. I have looked at the FAQ and browsed through the forum, but I'm missing something.

I have an SX28 hooked up to an SX Tech Board.

I have loaded several examples and tried them with the SXKey and all works fine.

I tried the ADC8.SXB example and it works fine with the SXKey installed. I modified the code to light an LED connected to RC.7 (through a 470 ohm resistor) when the "ADC" value is above 128. I have also modified the DEVICE and FREQ lines to read:

   [b]DEVICE[/b]          SX28, OSC1MHZ, TURBO, STACKX, OPTIONX
   [b]FREQ[/b]              1_000_000

When I use the device dialog to read back the configuration it indicates that the oscillator is set to "Internal 1MHz".

I press the Ctrl-P and program the device and it works as expected: turn the pot and the light goes on or off.

If I unplug the power and then plug it back in, the device does the expected and the program runs.

If I unplug the power, remove the SXKey, then plug power back in.... the SX chip gets blazing hot. In fact... if you ignore it is getting hot you get to replace it with another chip after it melts down and lets the smoke out.

My first thought of course is that there is no clock from the SXKey and therefore no program running and the device has the pin (in/out) configured incorrectly. There are several problems with this first thought of course.... the first of which is I have set the device for an internal clock.

So.... any ideas from the experienced? I started with two chips and prefer not to toast my last one  (o;

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