tcl/target/ti-cjtag.cfg

   1 # A start sequence to change from cJTAG to 4-pin JTAG
   2 # This is needed for CC2538 and CC26xx to be able to communicate through JTAG
   3 # Read section 6.3 in http://www.ti.com/lit/pdf/swru319 for more information.
   4 proc ti_cjtag_to_4pin_jtag {jrc} {
   5         # Bypass
   6         irscan $jrc 0x3f -endstate RUN/IDLE
   7         # Two zero bit scans and a one bit drshift
   8         pathmove RUN/IDLE DRSELECT DRCAPTURE DREXIT1 DRPAUSE
   9         pathmove DRPAUSE DREXIT2 DRUPDATE RUN/IDLE
  10         pathmove RUN/IDLE DRSELECT DRCAPTURE DREXIT1 DRPAUSE
  11         pathmove DRPAUSE DREXIT2 DRUPDATE RUN/IDLE
  12         pathmove RUN/IDLE DRSELECT DRCAPTURE DREXIT1 DRPAUSE
  13         pathmove DRPAUSE DREXIT2 DRSHIFT DREXIT1 DRUPDATE RUN/IDLE
  14         pathmove RUN/IDLE DRSELECT DRCAPTURE DREXIT1 DRPAUSE
  15
  16         # A two bit drhift and a 9 bit drshift
  17         pathmove DRPAUSE DREXIT2 DRSHIFT DRSHIFT DREXIT1 DRUPDATE RUN/IDLE
  18         pathmove RUN/IDLE DRSELECT DRCAPTURE DREXIT1 DRPAUSE
  19         pathmove DRPAUSE DREXIT2 DRSHIFT DRSHIFT DREXIT1 DRPAUSE
  20         pathmove DRPAUSE DREXIT2 DRSHIFT DRSHIFT DREXIT1 DRPAUSE
  21         pathmove DRPAUSE DREXIT2 DRSHIFT DRSHIFT DREXIT1 DRPAUSE
  22         pathmove DRPAUSE DREXIT2 DRSHIFT DRSHIFT DREXIT1 DRPAUSE
  23         pathmove DRPAUSE DREXIT2 DRSHIFT DREXIT1 DRPAUSE
  24         pathmove DRPAUSE DREXIT2 DRUPDATE RUN/IDLE
  25         pathmove RUN/IDLE DRSELECT DRCAPTURE DREXIT1 DRPAUSE
  26
  27         # Bypass
  28         irscan $jrc 0x3f -endstate RUN/IDLE
  29
  30         # Set ICEPick IDCODE in data register
  31         irscan $jrc 0x04 -endstate RUN/IDLE
  32 }