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How to disable JTAG?
Posted: Fri Mar 10, 2017 12:59 pm
by MalteJ
Hi,
I want to use the JTAG pins as GPIOs.
How can I disable JTAG? Is this permanent or is it possible to reenable JTAG afterwards?
Thank you!
Best,
Malte
Re: How to disable JTAG?
Posted: Sat Mar 11, 2017 2:35 pm
by MalteJ
It looks like you can only disable JTAG while enabling Secure Boot, right?
Re: How to disable JTAG?
Posted: Sat Mar 11, 2017 7:50 pm
by WiFive
What is the conflict you are having?
Re: How to disable JTAG?
Posted: Sun Mar 12, 2017 5:14 am
by ESP_Sprite
From memory, the JTAG pins are routed to the GPIOs by either the IO mux or the GPIO matrix, I don't remember which one off the top of my head. By simply reconfiguring the values in the configuration registers of that (or using an esp-idf driver, which will do this for you) you can deselect the JTAG function and use the GPIO for something else; no need to mess with fuses.