Add TMC software SPI (#9362)

Marlin/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/AlephObjects/TAZ4/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/Anet/A6/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/Anet/A8/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/BQ/Hephestos/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/BQ/Hephestos_2/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/BQ/WITBOX/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/Cartesio/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/Creality/CR-10/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/Creality/CR-10S/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/Creality/Ender/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/Felix/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/FolgerTech/i3-2020/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/Infitary/i3-M508/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/JGAurora/A5/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/Malyan/M150/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/Micromake/C1/enhanced/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/RigidBot/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/SCARA/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/Sanguinololu/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/TinyBoy2/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/Velleman/K8200/Configuration_adv.h

@@ -1012,9 +1012,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1098,6 +1099,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/Velleman/K8400/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/Wanhao/Duplicator 6/Configuration_adv.h

@@ -1001,9 +1001,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1087,6 +1088,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/delta/FLSUN/auto_calibrate/Configuration_adv.h

@@ -1001,9 +1001,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1087,6 +1088,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/delta/FLSUN/kossel/Configuration_adv.h

@@ -1001,9 +1001,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1087,6 +1088,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/delta/FLSUN/kossel_mini/Configuration_adv.h

@@ -1001,9 +1001,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1087,6 +1088,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/delta/generic/Configuration_adv.h

@@ -1001,9 +1001,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1087,6 +1088,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h

@@ -1001,9 +1001,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1087,6 +1088,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h

@@ -1006,9 +1006,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1092,6 +1093,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h

@@ -1001,9 +1001,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1087,6 +1088,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/gCreate/gMax1.5+/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/makibox/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h

@@ -999,9 +999,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1085,6 +1086,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/example_configurations/wt150/Configuration_adv.h

@@ -1000,9 +1000,10 @@
  * You'll also need the TMC2130Stepper Arduino library
  * (https://github.com/teemuatlut/TMC2130Stepper).
  *
- * To use TMC2130 stepper drivers in SPI mode connect your SPI2130 pins to
+ * To use TMC2130 stepper drivers in SPI mode connect your SPI pins to
  * the hardware SPI interface on your board and define the required CS pins
  * in your `pins_MYBOARD.h` file. (e.g., RAMPS 1.4 uses AUX3 pins `X_CS_PIN 53`, `Y_CS_PIN 49`, etc.).
+ * You may also use software SPI if you wish to use general purpose IO pins.
  */
 //#define HAVE_TMC2130
 
@@ -1086,6 +1087,16 @@
   #define E4_CURRENT         800
   #define E4_MICROSTEPS       16
 
+  /**
+   * Use software SPI for TMC2130.
+   * The default SW SPI pins are defined the respective pins files,
+   * but you can override or define them here.
+   */
+  //#define TMC_USE_SW_SPI
+  //#define TMC_SW_MOSI       -1
+  //#define TMC_SW_MISO       -1
+  //#define TMC_SW_SCK        -1
+
   /**
    * Use Trinamic's ultra quiet stepping mode.
    * When disabled, Marlin will use spreadCycle stepping mode.

Marlin/pins_RAMPS.h

@@ -113,6 +113,21 @@
 #define E1_ENABLE_PIN      30
 #define E1_CS_PIN          44
 
+/**
+ * Default pins for TMC software SPI
+ */
+#if ENABLED(TMC_USE_SW_SPI)
+  #ifndef TMC_SW_MOSI
+    #define TMC_SW_MOSI    66
+  #endif
+  #ifndef TMC_SW_MISO
+    #define TMC_SW_MISO    44
+  #endif
+  #ifndef TMC_SW_SCK
+    #define TMC_SW_SCK     64
+  #endif
+#endif
+
 
 #if ENABLED(HAVE_TMC2208)
   /**

Marlin/stepper_indirection.cpp

@@ -132,7 +132,12 @@
   #include "planner.h"
   #include "enum.h"
 
-  #define _TMC2130_DEFINE(ST) TMC2130Stepper stepper##ST(ST##_ENABLE_PIN, ST##_DIR_PIN, ST##_STEP_PIN, ST##_CS_PIN)
+  #if ENABLED(TMC_USE_SW_SPI)
+    #define _TMC2130_DEFINE(ST) TMC2130Stepper stepper##ST(ST##_ENABLE_PIN, ST##_DIR_PIN, ST##_STEP_PIN, ST##_CS_PIN, TMC_SW_MOSI, TMC_SW_MISO, TMC_SW_SCK)
+  #else
+    #define _TMC2130_DEFINE(ST) TMC2130Stepper stepper##ST(ST##_ENABLE_PIN, ST##_DIR_PIN, ST##_STEP_PIN, ST##_CS_PIN)
+  #endif
+
 
   // Stepper objects of TMC2130 steppers used
   #if ENABLED(X_IS_TMC2130)