LPC MicrocontrollersのトピックRe: swd/jtag pin

swd/jtag pin

lpcware — Wed, 15 Jun 2016 20:08:41 GMT

Content originally posted in LPCWare by armdspfpga on Mon Apr 01 19:01:09 MST 2013
If the lpc800 swd/jtag pin is configed as other functions and download the code, at this time, can we debug the lpc800 or update the program through swd/jtag? Or need erase the flash through ISP firstly?
Also I want know how many pins user can used really about the lpc800 mcu? e.g. LPC810M021FN8.
Thanks.

Re: swd/jtag pin

lpcware — Wed, 15 Jun 2016 20:08:42 GMT

Content originally posted in LPCWare by leon_heller on Mon Apr 08 09:56:06 MST 2013

You can use all six pins on the LPC810, but you lose three of them when debugging.

Re: swd/jtag pin

lpcware — Wed, 15 Jun 2016 20:08:43 GMT

Content originally posted in LPCWare by TheShed on Mon Apr 08 09:56:51 MST 2013

If you re-configure the SWD pins they can no longer be used for SWD. ISP is the only way to get back in.
JTAG is not able to access the debug port on the LPC8xx.
There up to six available IO pins on the LPC810

Re: swd/jtag pin

lpcware — Wed, 15 Jun 2016 20:08:44 GMT

Content originally posted in LPCWare by armdspfpga on Mon Apr 08 20:51:10 MST 2013

If PIN5 configed as PIO0_5 , can reset through this pin?

If pin5 configed as PIO0_5, pin5 configed as pio0_1, can entry ISP mode?