lpcware

LPC1343 lost SWD capabilities after setting NO_ISP CRP Mode

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by BrunoF on Wed Jan 08 23:08:13 MST 2014
Hi there,

im using a LPCXpresso 1343 board, and just programmed the target device in NO_ISP mode. Now, i'm getting the "Failed to connect: Ee(07). Bad ACK returned from status - wire error.:" while trying to re-program a new firmware to the device via LPCXpresso Run or Debug modes. Why is this happening?

As i read in the AN10968:

Quote:
These devices also feature a new protection level “NO_ISP” which will suppress response to the ISP pin at system startup (but will not prevent debug via SWD, nor will it prevent read access to flash memory)



So, OK. I was expecting loosing ISP capabilities (no more serial or USB bootloader) but why SWD too? Why im not being able to update/debug the firmware via LPCXPresso? Is there an option in Project Settings that i should change?

Thanks for reading.

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