Version 1.3.0

Version 1.3.0

For this version the configuration file has to be changed. The section watchdog: {} has been expanded with extra functions. See: watchdog documentation <https://litex-cnc.readthedocs.io/en/latest/modules/watchdog.html>_

• firmware:

  • watchdog: completly new watchdog. Functions can be added to the watchdog, such as a heartbeat or an enable signal. The enable signal can for example be used to disable the stepper drivers when the watchdog has detected an error. Also E-stop can be directly be wired into the watchdog, making them an integral part of the E-stop chain.
  • stepgen: the max_frequency of the stepgen can be set. The default value is 400 kHz (equal to prior v ersions). With the max_frequency and the clock frequency of the FPGA the optimal shift is calculatedensuring the maximum resolution, whilst assuring the requested maximum frequency.
  • pwm: Supports two additional modes: PWM/direction and UP/DOWN.
  • encoder: Supports counter mode.
  • gpio: Fixed bug in building firmware when all gpio are either input or output.
  • the LED and button on the 5A-75B and 5A-75E can be used in the firmware.
  • toolchain: fixed bug in detecting OS.
  • toolchain: bumped version of Litex to 2024.12.
  • toolchain: bumped version of OSS-cad-suite to 20241231.

• driver:

  • watchdog: completly new watchdog. The driver watchdog is implemented as a E-stop latch, so it can be used within an E-stop chain in the HAL. When the watchdog has bitten, it has to be actively reset by resetting the E-stop latch to resume command of the FPGA. Examples on how to tie the watchdog into HAL are provided in the documentation.
  • stepgen: Added index-enable and index-pulse. When the index-enable is HIGH and a pulse is received on index-pulse the counter of the stepgen is reset to 0.
  • pwm: the signal of PWM can be inverted.
  • all pin names are now consistently using - as seperator (i.e. index-enable instead of index_enable)