machines/systems/flexibot/docs/marlin/_gcode/M917.md

tag	title	brief	author	requires	group	codes	related	notes	parameters
m0917	L6474 Overcurrent Warning Test	Find L6474 minimum current thresholds	shitcreek	MONITOR_L6470_DRIVER_STATUS	L6474	M917	M916 M918	Requires `MONITOR_L6470_DRIVER_STATUS`. All tests assume each axis uses matching driver chips.	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 or E0. 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. If unspecified, uses the max feedrate. tag type feedrate int tag optional description values I true Starting overcurrent threshold. Report current value from driver if not specified. If there are multiple drivers on the axis then all will be set the same. tag type current int tag optional description values T true Current (mA) setting for TVAL (0 - 4A in 31.25mA increments, rounds down) - L6474 only. Report current value from driver if not specified. tag type current int tag optional description values K true Value for KVAL_HOLD (0 - 255) (ignored for L6474). Report current value from driver if not specified tag type Kvalue int

The M917 command runs a test procedure to find the minimum stepper current thresholds.

• Decrease OCD current until overcurrent error
• Increase OCD until overcurrent error goes away
• Decrease stall threshold until stall (not done on L6474)
• Increase stall until stall error goes away (not done on L6474)