RC bldc/brushless esc

could anyone share the configuration for rc bldc esc?
at the moment my configuration, and the problem is that the motor calibration occurs only with M03 S2000
# spindle setup
# PC0:PWM
loadrt pwmgen output_type=0
addf pwmgen.make-pulses base-thread
addf pwmgen.update servo-thread
setp arisc.pwm.3.freq-cmd    50.0 # Hz
setp arisc.pwm.3.dc-scale    24000.0 # max RPM
setp arisc.pwm.3.pwm-port    2 # PC
setp arisc.pwm.3.pwm-pin     0
setp arisc.pwm.3.dir-port    0 # PA
setp arisc.pwm.3.dir-pin     3
setp arisc.pwm.3.dir-invert  1
net s-rpm  spindle.0.speed-out  arisc.pwm.3.dc-cmd
net s-en   spindle.0.on         arisc.pwm.3.enable  arisc.gpio.PC4-out

If this is like a standard RC servo, you would need an offset and odd scaling
because the PWM range is from 2% to 4% duty cycle for 0 to full scale range.
(1 to 2 ms at 50 Hz)

So basically if you have a scale of 1200000 and add an offset of 24000
with the offset component would  be close for a 0 to 24000 input range
giving a PWM range or 2 to 4% = 1 to 2 ms at 50 Hz

Note that this reduces the PWM resolution by a factor of 50 which is why
RC PWMgens are typically implemented differently than normal PWMgens.