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docs:user-guide:hardware:turnoff.jtag.to.gpio [2018/02/17 21:36] – ↷ Page moved from doc:recipes:turnoff.jtag.to.gpio to docs:user-guide:hardware:turnoff.jtag.to.gpio bobafetthotmaildocs:guide-user:hardware:turnoff.jtag.to.gpio [2019/08/26 16:33] (current) – tag optimization vgaetera
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 ====== How to turnoff JTAG to free GPIO (only on ath79 processors) ====== ====== How to turnoff JTAG to free GPIO (only on ath79 processors) ======
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 You may need to disable the JTAG, to be able to use the TDI, TDO, TMS and TCK as GPIO-pin. The fact that the some special routers with EJTAG on PCB - EJTAG default is locked by hardware. You may need to disable the JTAG, to be able to use the TDI, TDO, TMS and TCK as GPIO-pin. The fact that the some special routers with EJTAG on PCB - EJTAG default is locked by hardware.
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 So, it is possible to turn off the built-in JTAG by simple script, without the NO need to patch/recompile firmware. So, it is possible to turn off the built-in JTAG by simple script, without the NO need to patch/recompile firmware.
  
 ===== Method (NO need re-build the Kernel): ===== ===== Method (NO need re-build the Kernel): =====
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 Install io: Install io:
 <code> <code>
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 </code> </code>
  
-===== Tags ===== 
-[[meta:tags|How to add tags]] 
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-{{tag>gpio}} 
  • Last modified: 2019/08/26 16:33
  • by vgaetera