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Documentation: Restore some esp32-devkitc openocd doc

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Restore some openocd information which I occassionally need.

This is a partial revert of:
```
commit 58a5e0744b
Author: Abdelatif Guettouche <abdelatif.guettouche@espressif.com>
Date:   Mon Jul 26 21:43:42 2021 +0200

    Documentation/esp32: Remove the rest of the OpenOCD text.
    This information there is outdated and some of its content should be in
    the board documentation and not the chip.

    Signed-off-by: Abdelatif Guettouche <abdelatif.guettouche@espressif.com>
```
This commit is contained in:
YAMAMOTO Takashi 2023-01-17 16:16:53 +09:00 committed by Xiang Xiao
parent 0a95c7721b
commit 2e0de13813
1 changed files with 30 additions and 0 deletions
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Documentation/platforms/xtensa/esp32/boards/esp32-devkitc/index.rst
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@ -575,3 +575,33 @@ Find your board IP using ``nsh> ifconfig`` and then from your computer::
Where x and y are the last two numbers of the IP that your router gave to
your board.
Debugging with OpenOCD
======================
Akizukidenshi FT232HL
---------------------
Akizukidenshi's FT232HL, a FT232H based JTAG adapter
(http://akizukidenshi.com/catalog/g/gK-06503/) with JP3 and JP4 closed,
and connected to ESP32 as:
+------------------+-------------+
| ESP32-DevKitC V4 | FT232HL |
+=======+==========+=============+
| J2 | J3 | J2 |
+-------+----------+-------------+
| IO13 | | AD0 (TCK) |
+-------+----------+-------------+
| IO12 | | AD1 (TDI) |
+-------+----------+-------------+
| | IO15 | AD2 (TDO) |
+-------+----------+-------------+
| IO14 | | AD3 (TMS) |
+-------+----------+-------------+
| GND | | GND |
+-------+----------+-------------+
can be used with ESP-IDF version of openocd with::
% openocd -f board/esp32-wrover-kit-1.8v.cfg