Moomeanus
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Moomeanus
Could you be more specific? AFAIK lpc21isp returns failure or something on exit and doesn't jump-start the code but the programming itself works correctly.
I guess you are not running your MCU at a frequency of 12 kHz (12 000 Hz) but probably at 12 MHz (12 000 000 Hz). The command line should...
Still, you need to pass **12000000** (and not **12000**) as operating frequency to lpc21isp.