M122 - TMC Debugging

1.1.7 debug Get TMC Debug Info

Description

Do a communication check for configured TMC drivers. Trinamic drivers that support this feature are TMC2130, TMC2160, TMC2208, TMC2209, TMC2660, TMC5130, and TMC5160.

With no parameters, this command returns the current settings for all installed and supported Trinamic stepper drivers.
Send M122 I to re-initialize drivers after a late power-on. Use S[0|1] to enable/disable continuous debugging output.

Notes

Requires at least one Trinamic stepper driver with SPI or UART connection.

TMC_DEBUG is no longer required to enable this G-code in Marlin 2.x, but enabling it produces an extended report.

Responses of all LOW (00:00:00:00) or all HIGH (FF:FF:FF:FF) are signs of a communication problem.
See TMC Troubleshooting for further information.

Usage

M122 [E] [I] [P<ms>] [S<bool>] [V] [X] [Y] [Z]

Parameters

`[E]`	Target E driver(s) only.
`[I]` 2.0.6	Flag to re-initialize stepper drivers with current settings.
`[P<ms>]` TMC_DEBUG MONITOR_DRIVER_STATUS	Interval between continuous debug reports, in milliseconds.
`[S<bool>]` TMC_DEBUG MONITOR_DRIVER_STATUS	Flag to enable/disable continuous debug reporting.
`[V]` TMC_DEBUG	Report raw register data. Refer to the datasheet to decipher the report.
`[X]`	Target X driver(s) only.
`[Y]`	Target Y driver(s) only.
`[Z]`	Target Z driver(s) only.

Examples

Enable debugging output:

M122 S1

Get all (supported) Trinamic driver states:

> M122
                  X       Y
Enabled           false   false
Set current       850     850
RMS current       826     826
MAX current       1165    1165
Run current       26/31   26/31
Hold current      13/31   13/31
CS actual         13/31   13/31
PWM scale 41      41
vsense            1=.18   1=.18
stealthChop       true    true
msteps            16      16
tstep             1048575 1048575
pwm
threshold         0       0
[mm/s]            -       -
OT prewarn        false   false
OT prewarn has
been triggered    false   false
off time          5       5
blank time        24      24
hysterisis
-end              2       2
-start            3       3
Stallguard thrs   0       0
DRVSTATUS X       Y
stallguard
sg_result         0       0
fsactive
stst
olb
ola
s2gb
s2ga
otpw
ot
'Driver registers:'
  X = 0x80:0D:00:00
  Y = 0x80:0D:00:00