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interfaces:usbocdh [2022/11/21 17:33] – created darroninterfaces:usbocdh [2022/11/24 06:44] (current) – darron
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 ====Olimex USB OCD H==== ====Olimex USB OCD H====
 +<wrap right>
 +{{interfaces:usbocdh.jpg?200}}
 +\\ \\
 +{{interfaces:openocd-jtag-layout.png?200}}
 +\\ \\
 +{{tools:jtag-reverse-adapter.jpg?200}}
 +</wrap>
  
 +ARM JTAG programming and debugging interface which can also supply 5V power from USB and
 +provide a standard RS232 serial interface.
 +
 +See the [[:boards:due|Arduino due]] (clone pictured) for the command line operation.
 ===Pinout=== ===Pinout===
  
 +==JTAG==
 <code> <code>
-1 VREF      2 VREF + 1 VREF      2 VREF 
-3 TTRST_N   4 GND + 3 TTRST_N   4 GND 
-5 TTDI      6 GND + 5 TTDI      6 GND 
-7 TTMS      8 GND + 7 TTMS      8 GND 
-9 TTCK      10 GND+ 9 TTCK     10 GND
 11 TRTCK    12 GND 11 TRTCK    12 GND
 13 TTDO     14 GND 13 TTDO     14 GND
 15 TSRST_N  16 GND 15 TSRST_N  16 GND
 17 NC       18 GND 17 NC       18 GND
-19 +5V      20 GND+19 5V       20 GND 
 + 
 +Pin 19=5V if VREF=NC
 </code> </code>
  
-Pin 19 supplies +5V if VREF=0+==RS232==
  
 +DB9 plug
 +<code>
 +1 2 3 4 5
 + 6 7 8 9
 +</code>
 +
 +<code>
 +1 DCD
 +2 RX
 +3 TX
 +4 DTR
 +5 GND
 +6 DSR
 +7 RTS
 +8 CTS
 +9 NC
 +</code>
 ===Resources=== ===Resources===
 +
 +[[https://www.olimex.com/Products/ARM/JTAG/ARM-USB-OCD-H/|Product page]]
  
 [[https://www.olimex.com/Products/ARM/JTAG/_resources/ARM-USB-OCD_and_OCD_H_manual.pdf|User manual]] [[https://www.olimex.com/Products/ARM/JTAG/_resources/ARM-USB-OCD_and_OCD_H_manual.pdf|User manual]]