BTT SKR1.3, Marlin 2.x, build for Creality CR10,Help!!!

I am tryng to replace the motherboard in my Creality CR10S with the Bigtree SKR1.3, with TMC2208's, 4 of X, Y, Z (splitter,) and E.
I am using Platform.io, Visual Code and the latest version of Marlin.
I used the Creality Cr10 example code as a starting point.

I have succeeded in getting all of the steppers to turn in the right directions, using the Reprap Discount Graphics controller - but hope to replace this with a MKS28/32 touch screen at a later stage.
Hot-end works, Heated bed works.

My problem, which I simply fail to understand is this - no matter what I do the printer will not recognise when an end-stop is triggerred.

I have tried Pronterface, entered M211 and all are endstops are 'open' - when I depress any of the endstops I get the response 'triggerred' - but when running the SKR firmware I can depress the endstops and the motors continue to move!!!

I'm not cannibalising the old control box so making all of the cables needed - twi wire for each board to end-stop, i.e my connections are (Board - Signal and Ground) connecting to mechanical endstops Signal and Common

I admit I am at a complete loss and very much inexperienced with Marlin - old age doesn't help either!!!

Is there any kindly soul out there that can help me -before I throw the printer out the window.

An extract from the configuration.h follows :

// @section homing

// Specify here all the endstop connectors that are connected to any endstop or probe.
// Almost all printers will be using one per axis. Probes will use one or more of the
// extra connectors. Leave undefined any used for non-endstop and non-probe purposes.
#define USE_XMIN_PLUG
#define USE_YMIN_PLUG
#define USE_ZMIN_PLUG
//#define USE_IMIN_PLUG
//#define USE_JMIN_PLUG
//#define USE_KMIN_PLUG
//#define USE_XMAX_PLUG
//#define USE_YMAX_PLUG
//#define USE_ZMAX_PLUG
//#define USE_IMAX_PLUG
//#define USE_JMAX_PLUG
//#define USE_KMAX_PLUG

// Enable pullup for all endstops to prevent a floating state
#define ENDSTOPPULLUPS
#if DISABLED(ENDSTOPPULLUPS)
// Disable ENDSTOPPULLUPS to set pullups individually
//#define ENDSTOPPULLUP_XMIN
//#define ENDSTOPPULLUP_YMIN
//#define ENDSTOPPULLUP_ZMIN
//#define ENDSTOPPULLUP_IMIN
//#define ENDSTOPPULLUP_JMIN
//#define ENDSTOPPULLUP_KMIN
//#define ENDSTOPPULLUP_XMAX
//#define ENDSTOPPULLUP_YMAX
//#define ENDSTOPPULLUP_ZMAX
//#define ENDSTOPPULLUP_IMAX
//#define ENDSTOPPULLUP_JMAX
//#define ENDSTOPPULLUP_KMAX
//#define ENDSTOPPULLUP_ZMIN_PROBE
#endif

// Enable pulldown for all endstops to prevent a floating state
//#define ENDSTOPPULLDOWNS
#if DISABLED(ENDSTOPPULLDOWNS)
// Disable ENDSTOPPULLDOWNS to set pulldowns individually
//#define ENDSTOPPULLDOWN_XMIN
//#define ENDSTOPPULLDOWN_YMIN
//#define ENDSTOPPULLDOWN_ZMIN
//#define ENDSTOPPULLDOWN_IMIN
//#define ENDSTOPPULLDOWN_JMIN
//#define ENDSTOPPULLDOWN_KMIN
//#define ENDSTOPPULLDOWN_XMAX
//#define ENDSTOPPULLDOWN_YMAX
//#define ENDSTOPPULLDOWN_ZMAX
//#define ENDSTOPPULLDOWN_IMAX
//#define ENDSTOPPULLDOWN_JMAX
//#define ENDSTOPPULLDOWN_KMAX
//#define ENDSTOPPULLDOWN_ZMIN_PROBE
#endif

// Mechanical endstop with COM to ground and NC to Signal uses "false" here (most common setup).
#define X_MIN_ENDSTOP_INVERTING false // Set to true to invert the logic of the endstop.
#define Y_MIN_ENDSTOP_INVERTING false // Set to true to invert the logic of the endstop.
#define Z_MIN_ENDSTOP_INVERTING true // Set to true to invert the logic of the endstop.
#define I_MIN_ENDSTOP_INVERTING false // Set to true to invert the logic of the endstop.
#define J_MIN_ENDSTOP_INVERTING false // Set to true to invert the logic of the endstop.
#define K_MIN_ENDSTOP_INVERTING false // Set to true to invert the logic of the endstop.
#define X_MAX_ENDSTOP_INVERTING false // Set to true to invert the logic of the endstop.
#define Y_MAX_ENDSTOP_INVERTING false // Set to true to invert the logic of the endstop.
#define Z_MAX_ENDSTOP_INVERTING false // Set to true to invert the logic of the endstop.
#define I_MAX_ENDSTOP_INVERTING false // Set to true to invert the logic of the endstop.
#define J_MAX_ENDSTOP_INVERTING false // Set to true to invert the logic of the endstop.
#define K_MAX_ENDSTOP_INVERTING false // Set to true to invert the logic of the endstop.
#define Z_MIN_PROBE_ENDSTOP_INVERTING false // Set to true to invert the logic of the probe.

/**
* Stepper Drivers
*
* These settings allow Marlin to tune stepper driver timing and enable advanced options for
* stepper drivers that support them. You may also override timing options in Configuration_adv.h.
*
* A4988 is assumed for unspecified drivers.
*
* Use TMC2208/TMC2208_STANDALONE for TMC2225 drivers and TMC2209/TMC2209_STANDALONE for TMC2226 drivers.
*
* Options: A4988, A5984, DRV8825, LV8729, L6470, L6474, POWERSTEP01,
* TB6560, TB6600, TMC2100,
* TMC2130, TMC2130_STANDALONE, TMC2160, TMC2160_STANDALONE,
* TMC2208, TMC2208_STANDALONE, TMC2209, TMC2209_STANDALONE,
* TMC26X, TMC26X_STANDALONE, TMC2660, TMC2660_STANDALONE,
* TMC5130, TMC5130_STANDALONE, TMC5160, TMC5160_STANDALONE
* :['A4988', 'A5984', 'DRV8825', 'LV8729', 'L6470', 'L6474', 'POWERSTEP01', 'TB6560', 'TB6600', 'TMC2100', 'TMC2130', 'TMC2130_STANDALONE', 'TMC2160', 'TMC2160_STANDALONE', 'TMC2208', 'TMC2208_STANDALONE', 'TMC2209', 'TMC2209_STANDALONE', 'TMC26X', 'TMC26X_STANDALONE', 'TMC2660', 'TMC2660_STANDALONE', 'TMC5130', 'TMC5130_STANDALONE', 'TMC5160', 'TMC5160_STANDALONE']
*/
#define X_DRIVER_TYPE TMC2208
#define Y_DRIVER_TYPE TMC2208
#define Z_DRIVER_TYPE TMC2208
//#define X2_DRIVER_TYPE A4988
//#define Y2_DRIVER_TYPE A4988
//#define Z2_DRIVER_TYPE TMC2208
//#define Z3_DRIVER_TYPE A4988
//#define Z4_DRIVER_TYPE A4988
//#define I_DRIVER_TYPE A4988
//#define J_DRIVER_TYPE A4988
//#define K_DRIVER_TYPE A4988
#define E0_DRIVER_TYPE TMC2208
//#define E1_DRIVER_TYPE TMC2208
//#define E2_DRIVER_TYPE A4988
//#define E3_DRIVER_TYPE A4988
//#define E4_DRIVER_TYPE A4988
//#define E5_DRIVER_TYPE A4988
//#define E6_DRIVER_TYPE A4988
//#define E7_DRIVER_TYPE A4988

Any advice, guidance would be gratefully accepted.

you have to remove the XST,YST and ZST Jumpers or the TMC2208 controls the endstop io pins.

Also M211 - Software Endstop, not hardware endstops
M119 is hardware endstops

Edited 1 time(s). Last edit at 01/07/2022 09:47PM by Dust.

Thanks Dust - problem resolved. I already had the jumpers removed.
I had never 'homed' any axis on the basis that I didn't want to risk the steppers crashing into the chassis. However, in desperation I tried it and loh and behold - they all worked o.k.!!!

I have tried things a few times since - just to prove I wasn't going mad - same result, if I just start up the printer and do not perform a 'Home' the hardware end-stops do not stop the motors - as soon as I Home the printer the hardware endstops work as expected.

I'll need to figure out some way of having the printer Home on start-up.

Thanks again.

Endstops by default are only looked at during homing, not moves

Unless you enable
// If you want endstops to stay on (by default) even when not homing
// enable this option. Override at any time with M120, M121.
//#define ENDSTOPS_ALWAYS_ON_DEFAULT