Hi everyone, I obtain the following message when i try to download the code with J-Link; "Could not identify firmware(identification string has length of 0)" or "Received 0xFFFFFFFF as core Id. No communication with core" I checked all J-Link connections and LPC pins. I use; MCU : LPC2131 Comp: IAR 4.30A I hope someone can help me. Have a nice day, --------------------------------- Yahoo! Autos. Looking for a sweet ride? Get pricing, reviews, & more on new and used cars.
Core id problem
Started by ●February 16, 2006
Reply by ●February 16, 20062006-02-16
Serdar, Your jtag speed is set too fast. The segger driver 3.10d will help a lot. You can also set the speed to fixed at 1000, assuming your CCLK is 12mhz or better. These are set in the JLink selection in Options. Hope this helps --- In lpc2000@lpc2..., Serdar Demirdag <SerdarDemirdag@...> wrote: > > Hi everyone, > > I obtain the following message when i try to download the code with J-Link; > > "Could not identify firmware(identification string has length of 0)" > > or > > "Received 0xFFFFFFFF as core Id. > No communication with core" > > I checked all J-Link connections and LPC pins. > > I use; > MCU : LPC2131 > Comp: IAR 4.30A > > I hope someone can help me. > Have a nice day, > > > > --------------------------------- > Yahoo! Autos. Looking for a sweet ride? Get pricing, reviews, & more on new and used cars. > > >
Reply by ●February 17, 20062006-02-17
--- In lpc2000@lpc2..., "arm7dude" <arm7dude@...> wrote: > Thanks for your attention dude, but your advice doesnt work at all.. I can programme the flash only twice and i dont know how.. Is there any thing else to do? Thanks for your help... > Serdar, > > Your jtag speed is set too fast. The segger driver 3.10d will help a > lot. You can also set the speed to fixed at 1000, assuming your CCLK > is 12mhz or better. These are set in the JLink selection in Options. > > Hope this helps > > --- In lpc2000@lpc2..., Serdar Demirdag <SerdarDemirdag@> > wrote: > > > > Hi everyone, > > > > I obtain the following message when i try to download the code > with J-Link; > > > > "Could not identify firmware(identification string has length of 0)" > > > > or > > > > "Received 0xFFFFFFFF as core Id. > > No communication with core" > > > > I checked all J-Link connections and LPC pins. > > > > I use; > > MCU : LPC2131 > > Comp: IAR 4.30A > > > > I hope someone can help me. > > Have a nice day, > > > > > > > > --------------------------------- > > Yahoo! Autos. Looking for a sweet ride? Get pricing, reviews, & > more on new and used cars. > > > > > > >