Hi Kelly, to narrow it down try to only connect the GND line from the JTAG connector to your circuit. Does the curcuit work properly then?
If yes, are all ground connections of the circuit really connected together? Which power supply do you use? Christian mspgcc-users-ad...@lists.sourceforge.net wrote on 24.08.2004 09:29:48: > I've got a problem that I could use some help, it's got me baffled. > When I have the JTAG connected, everything seems to work fine, even > if I'm not running gdb. But if it's disconnected, the system is flakey, > ADC readings are highly variable, and button presses seem to occur > without pressing a button.. and when I put my fingers on the connectors > for the JTAG, the reset in particular, it resets. > > This leads me to believe the reset and/or test pins are not getting > pulled high and low properly. I have the reset pin with a 33K resistor > to Vcc (3v). I've tried different values, at 1K, it seems more stable. > Perhaps the power supply is unstable? I've put in big capacitors to no > effect. > > I'm about at wits ends, and soldered together a whole new board and > MSP430 and I get the same behavior, and have not spent about 12 hours > trying to fix/debug this problem. > > Any ideas appreciated! > > Thanks, > Kelly Murray >
