Quote

/**
* M43: Pin debug - report pin state, watch pins, toggle pins and servo probe test/report
*
* M43 - report name and state of pin(s)
* P Pin to read or watch. If omitted, reads all pins.
* I Flag to ignore Marlin's pin protection.
*
* M43 W - Watch pins -reporting changes- until reset, click, or M108.
* P Pin to read or watch. If omitted, read/watch all pins.
* I Flag to ignore Marlin's pin protection.
*
* M43 E - Enable / disable background endstop monitoring
* - Machine continues to operate
* - Reports changes to endstops
* - Toggles LED_PIN when an endstop changes
* - Cannot reliably catch the 5mS pulse from BLTouch type probes
*
* M43 T - Toggle pin(s) and report which pin is being toggled
* S - Start Pin number. If not given, will default to 0
* L - End Pin number. If not given, will default to last pin defined for this board
* I - Flag to ignore Marlin's pin protection. Use with caution!!!!
* R - Repeat pulses on each pin this number of times before continueing to next pin
* W - Wait time (in miliseconds) between pulses. If not given will default to 500
*
* M43 S - Servo probe test
* P - Probe index (optional - defaults to 0
*/

Quote

>M43
PIN: 00 RXD Input = 1
PIN: 01 TXD Input = 1
PIN: 02 Z_STEP_PIN protected
PIN: 03 Z_DIR_PIN protected
PIN: 04 SDSS Input = 1
. SS_PIN Input = 1
PIN: 05 SERVO0_PIN Input = 1
PIN: 06 SERVO1_PIN Input = 1
PIN: 07 HEATER_BED_PIN protected
PIN: 08 FAN1_PIN protected
PIN: 09 FAN_PIN protected
PIN: 10 Input = 1
PIN: 11 HEATER_2_PIN Output = 0
PIN: 12 HEATER_1_PIN Output = 0
PIN: 13 HEATER_0_PIN protected
PIN: 14 SD_DETECT_PIN Input = 1
PIN: 15 Z_ENABLE_PIN protected
PIN: 16 Y_DIR_PIN protected
PIN: 17 Y_STEP_PIN protected
PIN: 18 Input = 1
PIN: 19 Input = 1
PIN: 20 Input = 1
PIN: 21 Input = 1
PIN: 22 Y_ENABLE_PIN protected
PIN: 23 X_DIR_PIN protected
PIN: 24 X_STEP_PIN protected
PIN: 25 X_CS_PIN protected
PIN: 26 X_ENABLE_PIN protected
PIN: 27 Y_CS_PIN protected
PIN: 28 X_MIN_PIN protected
PIN: 29 Z_CS_PIN protected
PIN: 30 Y_MIN_PIN protected
PIN: 31 E0_CS_PIN protected
PIN: 32 Z_MIN_PIN protected
PIN: 33 E1_CS_PIN Input = 1
PIN: 34 X_MAX_PIN protected
PIN: 35 E2_CS_PIN Input = 1
PIN: 36 Y_MAX_PIN protected
PIN: 37 Input = 1
PIN: 38 Z_MAX_PIN protected
PIN: 39 FIL_RUNOUT_PIN Input = 1
. SERVO2_PIN Input = 1
PIN: 40 SERVO3_PIN Input = 1
PIN: 41 Input = 1
PIN: 42 Input = 1
PIN: 43 Input = 1
PIN: 44 Input = 1
PIN: 45 Input = 1
PIN: 46 Input = 1
PIN: 47 Input = 1
PIN: 48 Input = 1
PIN: 49 E2_ENABLE_PIN Output = 0
PIN: 50 Input = 1
PIN: 51 E2_STEP_PIN Input = 1
PIN: 52 Input = 1
PIN: 53 E2_DIR_PIN Output = 0
. MAX6675_SS_PIN Output = 0
PIN: 54 (A 0) TEMP_0_PIN protected
PIN: 55 (A 1) TEMP_1_PIN Input = 1
PIN: 56 (A 2) TEMP_2_PIN Input = 1
PIN: 57 (A 3) TEMP_3_PIN Input = 1
PIN: 58 (A 4) TEMP_BED_PIN protected
PIN: 59 (A 5) TEMP_4_PIN Input = 1
PIN: 60 (A 6) E0_DIR_PIN protected
PIN: 61 (A 7) E0_STEP_PIN protected
PIN: 62 (A 8) E0_ENABLE_PIN protected
PIN: 63 (A 9) E1_DIR_PIN Output = 0
PIN: 64 (A10) E1_STEP_PIN Input = 1
PIN: 65 (A11) E1_ENABLE_PIN Output = 0
PIN: 66 Input = 1
PIN: 67 Input = 1
PIN: 68 Input = 1
PIN: 69 Input = 1
PIN: 70 Input = 1
PIN: 71 Input = 1
PIN: 72 Input = 1
PIN: 73 Input = 1
PIN: 74 MISO_PIN Input = 1
PIN: 75 MOSI_PIN Input = 1
PIN: 76 SCK_PIN Input = 1
PIN: 77 Input = 1
PIN: 78 Input = 1
ok