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interfaces:usbocdh [2022/11/21 17:34] – [Pinout] 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
Line 15: Line 27:
 19 5V       20 GND 19 5V       20 GND
  
-Pin 19=5V if VREF=0V+Pin 19=5V if VREF=NC 
 +</code> 
 + 
 +==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> </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]]