• Timer 3 issues on the C8051F321/320
    This is a little gotcha they don't tell you in the manual and I have had to deduce this by trial and error. It does clearly state in the manual that an instruction that clears the EA bit requires...
  • JTAG and ULINK issue
    Hi, I'm having trouble communicating to the LPC2138 device through the JTAG interface on the product I've designed. Downloading my firmware to the MCB2130 eval board works fine, however, when I try...
  • Sudden JTAG Failure with ULink
    Hi there, I am no longer able to connect to my custom XC167 board via U-Link JTAG connection. This issue only arose after attempting to perform SAVE and LOAD commands to and from the on-board program...
  • JTAG (ULINK) detection by Application
    Is there a way that an application can detect the presence of the ULINK2 / JTAG (i.e. debugger) so that it can determine whether or not to enable the watchdog? If the watchdog is enabled during debugging...
  • ULINK JTAG Communication Failure
    I am having problems downloading to a target device that uses LPC2148 MCU. I am using uVision 3.5 and the ULINK USB-JTAG adapter. When I click download, I get a message saying "JTAG Communication...