From: Erich W. <ew....@na...> - 2010-03-03 20:11:24
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Hello Mike, Mike Beach wrote: > ... The on-chip UART cannot be functional on a virgin chip (and in > any case RS232 levels would, of course, need at least level conversion). The only methods > I am aware of are "parallel programming" (simple in concept but requires the manipulation > of most AVR pins) or "serial programming" (alias "In System Programming"), using a 6-pin > SPI interface, perhaps with the addition of a clock. The four SPI signal pins (MOSI, MISO, > RESET and SCLK) could in principle be driven from a parallel port, as in the SP12 project - > perhaps the answer. In-Serial-Programming is the answer, and I'm using the sp12 Programmer, too! :-) Cheers, Erich |