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Discussion Groups | LPC2000 | ETM on the LPC2114
Discussion group dedicated to the Philips LPC2000 family of ARM MCUs
ETM on the LPC2114 - Author Unknown - Apr 24 6:31:00 2004
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I just read through the users manual for the LPC2114 and from what i can deduce the ETM output can be individually disabled simply by not tying a pull up resisitor to P1.20/TRACESYNC. I.e. you should be able to use the ETM port pins as normal IO pins while debugging through the JTAG interface. Did i understand this correctly or have i jumped to conclusions ? /Pontus |
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Re: ETM on the LPC2114 - lpc2100_fan - Apr 24 8:18:00 2004
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Pontus, on the LPC2114 and all 64-pin LPC2000 devices that I know, you can pick either JTAG or ETM+JTAG so you got it right. On the LPC210x (48-pin devices) this is a little more tricky. Enabling debug does enable JTAG + ETM, that's why there were many questions about the secondary JTAG on the LPC210x. There is no such thing as a secondary JTAG (documented?) on the LPC2114. Cheers, Bob --- In , pontus.oldberg@i... wrote: > I just read through the users manual for the LPC2114 and from what i > can deduce the ETM output can be individually disabled simply by not > tying a pull up resisitor to P1.20/TRACESYNC. I.e. you should be able > to use the ETM port pins as normal IO pins while debugging through > the JTAG interface. Did i understand this correctly or have i jumped > to conclusions ? > > /Pontus |
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RE: Re: ETM on the LPC2114 - Invector Embedded Technologies - Apr 24 12:12:00 2004
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Excellent,
Thanks for the answer.
/Pontus
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Re: ETM on the LPC2114 - the ARM Patch - Apr 25 10:32:00 2004
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If P1.20/TRACESYNC is LOW coming out of RESET, the ETM will be ENABLED. Leaving P1.20/TRACESYNC OPEN or or having a PULL-UP on it coming out of RESET will DISABLE the ETM. Regards -Bill Knight the ARM Patch On Sat, 24 Apr 2004 11:31:09 -0000, wrote: I just read through the users manual for the LPC2114 and from what i can deduce the ETM output can be individually disabled simply by not tying a pull up resisitor to P1.20/TRACESYNC. I.e. you should be able to use the ETM port pins as normal IO pins while debugging through the JTAG interface. Did i understand this correctly or have i jumped to conclusions ? /Pontus Yahoo! Groups Links |
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