Output an accelerated pulse train on step channel 0 using a PIO state machine.

from cubloc import StepAccel
 
StepAccel(channel: int, pin: int, freqBase: int, freqTop: int, freqAccel: int, qty: int)

• channel: StepPulse channel number. StepAccel supports only channel 0.
• pin: Output GPIO pin number.
• freqBase: Starting pulse frequency in pulses per second (20 to 3300).
• freqTop: Final pulse frequency after acceleration (20 to 3300).
• freqAccel: Acceleration rate in pulses per second per second. Must be > 0 when freqBase < freqTop.
• qty: Number of pulses to output (0 to 2147483647).

• TypeError: An argument has an invalid type.
• ValueError: channel or a numeric argument is outside the supported range.

• Note: Acceleration is implemented as a staircase of fixed-frequency PIO segments, so small gaps can occur when the next segment is reconfigured.

from cubloc import StepAccel
 
# Example usage
StepAccel(0, 0, 1, 1, 1, 1)

• StepPulse
• StepStat
• StepStop