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SPI to UART challenge

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ikalogic said:
I want to build an ISP programmer that attaches to the serial port of a PC.

I have already made a parallel programmer here:

**broken link removed**

But Parallel port is disapearing, slowly but surely, so i want to find a long term solution, either USB or SERIAL. I am able to build any required program (under WINDOWS)

I thought i would start by putting my first target on the SERIAL port (since there exist many USB to serial adapters out there..)


soo.. here is where i stand!

So basically you're trying to reinvent the wheel?.

But, as Bill says, essentially both serial and parallel are disappearing, so you need a processor solution, USB to serial adaptors don't really work for non-standard (actually non serial port) uses of a port.
 
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