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December 3, 2024 at 9:11 pm
#806
When the LPC17XX/LPC24XX gets into a bad state, you need to short the ISP entry signal to ground while programming.
See here for the revision 4 schematic for the SOMDIMM module.
http://www.teamfdi.com/support/touch-screen.php#dk-57vts-lpc1788
http://www.teamfdi.com/products/somdimm_lpc1788…MM-LPC1788_SCH_4.pdf
On J1 you need to short pins 3 and 4 together, then use the JLink to reprogram the unit.
If you purchased a USB-ISP then you should have a cable that will plug into the SOMDIMM’s J1, if not you can use a small flat head screw driver stuck in the middle of the pins to short them together