We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.
Hello.I am trying to load my code into a LPC2129 with ULINK2 and appears an error message saying: "Could not stop ARM device! Please check the JTAG cable". I tried to change the JTAG clock to 100 kHz and did not work. I tried with another ULINK2 but nothing changes.How can I solve the problem?Best regards,Alessandro
So a relatively old ARM7 design. Your design? Some other vendor? Board of known functionality?
The JTAG pins might be incorrect and not actually functional. All pins? JTDI, JTDO..
Absent NRST/NRESET to actually control the core? Check NRST state, check supplies and BOR/POR thresholding devices on board, or on chip.
Pins getting reconfigured, or powered down. Watch for low power modes, or disabling the interface, or clocking/settings of pins.