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---
tag: m0122
title: TMC Debugging
brief: Get TMC Debug Info
author: mbuc
since: 1.1.7
requires: HAS_TRINAMIC_CONFIG
group: debug
codes: [ M122 ]
notes:
- '`TMC_DEBUG` is no longer needed in Marlin 2.0.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.<br/>
See [TMC Troubleshooting](/docs/hardware/tmc_drivers.html) for further information.
parameters:
-
tag: I
since: 2.0.6
optional: true
description: Flag to re-initialize stepper drivers with current settings.
-
tag: X
optional: true
description: Target X driver(s) only.
-
tag: Y
optional: true
description: Target Y driver(s) only.
-
tag: Z
optional: true
description: Target Z driver(s) only.
-
tag: E
optional: true
description: Target E driver(s) only.
-
tag: V
requires: TMC_DEBUG
optional: true
description: Report raw register data. Refer to the datasheet to decypher.
-
tag: S
requires: TMC_DEBUG, MONITOR_DRIVER_STATUS
type: bool
optional: true
description: Flag to enable/disable continuous debug reporting.
-
tag: P
requires: TMC_DEBUG, MONITOR_DRIVER_STATUS
optional: true
description: Interval between continuous debug reports, in milliseconds.
values:
-
tag: ms
type: int
examples:
-
pre: 'Enable debugging output:'
code: M122 S1
-
pre: 'Get all (supported) Trinamic driver states:'
code: |
> 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
---
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.
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