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34 lines
951 B

  1. #
  2. # Config for using Raspberry Pi's expansion header
  3. #
  4. # This is best used with a fast enough buffer but also
  5. # is suitable for direct connection if the target voltage
  6. # matches RPi's 3.3V and the cable is short enough.
  7. #
  8. # Do not forget the GND connection, pin 6 of the expansion header.
  9. #
  10. interface bcm2835gpio
  11. # Transition delay calculation: SPEED_COEFF/khz - SPEED_OFFSET
  12. # These depend on system clock, calibrated for stock 700MHz
  13. # bcm2835gpio_speed SPEED_COEFF SPEED_OFFSET
  14. bcm2835gpio_speed_coeffs 113714 28
  15. # Each of the JTAG lines need a gpio number set: tck tms tdi tdo
  16. # Header pin numbers: 23 22 19 21
  17. bcm2835gpio_jtag_nums 11 25 10 9
  18. # If you define trst or srst, use appropriate reset_config
  19. # Header pin numbers: TRST - 26, SRST - 18
  20. # bcm2835gpio_trst_num 7
  21. # reset_config trst_only
  22. # bcm2835gpio_srst_num 24
  23. # reset_config srst_only srst_push_pull
  24. # or if you have both connected,
  25. # reset_config trst_and_srst srst_push_pull