flexi-bot/docs/marlin/_gcode/M916.md

tag	title	brief	author	requires	group	codes	related	notes	parameters
m0916	L6474 Thermal Warning Test	Find L6474 drive level (KVAL_HOLD) threshold	shitcreek	MONITOR_L6470_DRIVER_STATUS	L6474	M916	M917 M918	Requires `MONITOR_L6470_DRIVER_STATUS`. All tests assume each axis uses matching driver chips. On the L6474 the TVAL is used instead of KVAL.	tag optional description values J true Select which driver(s) to monitor on multi-driver axis tag description 0 (default) Monitor all drivers on the axis tag description 1 Monitor only X, Y, Z, E1 tag description 2 Monitor only X2, Y2, Z2, E2 tag description 3 Monitor only Z3, E3 tag description 4 Monitor only Z4, E4 tag description 5 Monitor only Z5, E5 tag description 6 Monitor only Z6, E6 tag description 7 Monitor only Z7, E7 tag optional description values X true Monitor X with the given displacement (1 - 255mm) on either side of the current position. type mm tag optional description values Y true Monitor Y with the given displacement (1 - 255mm) on either side of the current position. type mm tag optional description values Z true Monitor Z with the given displacement (1 - 255mm) on either side of the current position. type mm tag optional description values E true Monitor E with the given displacement (1 - 255mm) on either side of the current position. type mm tag optional description values F true Feedrate for the moves. (Default max feedrate if unspecified.) tag type feedrate int tag optional description values T true Current (mA) setting for TVAL (0 - 4A in 31.25mA increments, rounds down) - L6474 only. If unspecified, report current value from driver. tag type current int tag optional description values K true Value for KVAL_HOLD (0 - 255) (ignored for L6474). If unspecified, report current value from driver. tag type Kvalue int tag optional description values D true Time (in seconds) to run each setting of KVAL_HOLD/TVAL. (Default zero, to run each setting once.) tag type second int

M916: increase KVAL_HOLD until thermal warning. This routine is also useful for determining the approximate KVAL_HOLD where the stepper stops losing steps. The sound will get noticeably quieter as it stops losing steps.