diff options
Diffstat (limited to 'docs/source/jtag.rst')
| -rw-r--r-- | docs/source/jtag.rst | 30 |
1 files changed, 12 insertions, 18 deletions
diff --git a/docs/source/jtag.rst b/docs/source/jtag.rst index 9b8ee14..e3c8111 100644 --- a/docs/source/jtag.rst +++ b/docs/source/jtag.rst @@ -15,24 +15,24 @@ and hardware peripherals (we use it when working on :ref:`libmaple Note that the STM32 on the Maple has a built-in low level serial debugger which could also be used to flash bootloaders, and that the :ref:`ASSERT <language-assert>` framework allows basic debugging over -a USART serial channel. We expect only advanced users to use this -feature. +a USART serial channel. We expect only fairly advanced users to use +this feature. .. contents:: Contents :local: - Wiring Diagram -------------- .. figure:: /_static/img/jtag-wiring.png :align: center :alt: JTAG wiring diagram + :width: 7.4in - JTAG wiring diagram to connect a standard 20-pin ARM JTAG device to - the 8-pin JTAG port on the Maple. - -.. TODO jtag wiring diagram (above) looks terrible; replace it + JTAG wiring diagram (`large version + <http://leaflabs.com/wp-content/uploads/2010/11/maple-jtagadapter.png>`_) + to connect a standard 20-pin ARM JTAG device to the 8-pin JTAG port + on the Maple. The Maple has holes for a 8-pin JTAG header but that header is not soldered on by default. If you know ahead of time that you'll be @@ -42,22 +42,14 @@ probably solder one on for no charge. Otherwise, you can simply attach standard 0.1" pitch male header pins (either the exact 4x2 block or two 4-pin pieces of breakaway straight header). For a one-off usage hack, the header can be jammed in the holes and twisted to -ensure electrical contact; this is what we do to flash our bootloader. - -The above schematic assumes that the header has been soldered on to -the *bottom* of the board, not the top; most ribbon cable connectors -will interfere with the power header. If you don't want a header -coming off the bottom, you can use a slim connector and invert this -diagram appropriately. - +ensure electrical contact. Compatible Devices ------------------ We have had good experience with the `Olimex ARM-USB-OCD <http://www.olimex.com/dev/arm-usb-ocd.html>`_ device, which costs -about 55 euro plus shipping (as of October 2010). - +about 55 euro plus shipping (as of November 2010). Recommended Reading ------------------- @@ -66,6 +58,8 @@ Recommended Reading * `STM32/gdb/OpenOCD HOWTO <http://fun-tech.se/stm32/OpenOCD/gdb.php>`_ * STMicro documentation for STM32F103RB microcontroller: - * `All <http://www.st.com/mcu/devicedocs-STM32F103RB-110.html>`_ * `Datasheet <http://www.st.com/stonline/products/literature/ds/13587.pdf>`_ (pdf) * `Reference Manual <http://www.st.com/stonline/products/literature/rm/13902.pdf>`_ (pdf) +* There's a `thread on JTAG + <http://forums.leaflabs.com/topic.php?id=536>`_ in our `forum`_ + which you may find useful. |