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Hello All, I’m
trying to develop my own mote by looking at the MICA2. I’ve made a small
PCB with an ATMega128, an 8MHz main oscillator and a 32k watch crystal for the
RTC. I plan to integrate a CC1000 radio (as soon as I can buy one). I’ve
managed to download the Blink application and it works. Now I want to get the
UART working. When I tried the TestUart it was
unsuccessful – i.e. there is activity on the UART pin, but this is not recognized
by the PC/HyperTerminal. I figured out that one reason is that I have an 8M oscillator
while the MICA has a 7.3728M one. Even after I changed the values that are
written to the UART control registers, nothing is shown on HyperTerminal. Can you please point out any other reason,
that the clocking on the actual MICA2 mote and my board may me different? Are
there some other components in TinyOS that rely on the main oscillator being 7.3728MHz?
Are there any other critical components for a Mote (beside the radio) that I’ve
left out from my board? Hope
you guys can help me out. J Thanks Nuwan |
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