Configure TMC interpolation per driver (#19828)

Marlin/Configuration_adv.h

 #if HAS_TRINAMIC_CONFIG
 
   #define HOLD_MULTIPLIER    0.5  // Scales down the holding current from run current
-  #define INTERPOLATE       true  // Interpolate X/Y/Z_MICROSTEPS to 256
+
+  /**
+   * Interpolate microsteps to 256
+   * Override for each driver with <driver>_INTERPOLATE settings below
+   */
+  #define INTERPOLATE      true
 
   #if AXIS_IS_TMC(X)
     #define X_CURRENT       800        // (mA) RMS current. Multiply by 1.414 for peak current.
     #define X_CURRENT_HOME  X_CURRENT  // (mA) RMS current for sensorless homing
-    #define X_MICROSTEPS     16    // 0..256
+    #define X_MICROSTEPS     16        // 0..256
     #define X_RSENSE          0.11
-    #define X_CHAIN_POS      -1    // <=0 : Not chained. 1 : MCU MOSI connected. 2 : Next in chain, ...
+    #define X_CHAIN_POS      -1        // -1..0: Not chained. 1: MCU MOSI connected. 2: Next in chain, ...
+    //#define X_INTERPOLATE  true      // Enable to override 'INTERPOLATE' for the X axis
   #endif
 
   #if AXIS_IS_TMC(X2)
     #define X2_MICROSTEPS    16
     #define X2_RSENSE         0.11
     #define X2_CHAIN_POS     -1
+    //#define X2_INTERPOLATE true
   #endif
 
   #if AXIS_IS_TMC(Y)
     #define Y_MICROSTEPS     16
     #define Y_RSENSE          0.11
     #define Y_CHAIN_POS      -1
+    //#define Y_INTERPOLATE  true
   #endif
 
   #if AXIS_IS_TMC(Y2)
     #define Y2_MICROSTEPS    16
     #define Y2_RSENSE         0.11
     #define Y2_CHAIN_POS     -1
+    //#define Y2_INTERPOLATE true
   #endif
 
   #if AXIS_IS_TMC(Z)
     #define Z_MICROSTEPS     16
     #define Z_RSENSE          0.11
     #define Z_CHAIN_POS      -1
+    //#define Z_INTERPOLATE  true
   #endif
 
   #if AXIS_IS_TMC(Z2)
     #define Z2_MICROSTEPS    16
     #define Z2_RSENSE         0.11
     #define Z2_CHAIN_POS     -1
+    //#define Z2_INTERPOLATE true
   #endif
 
   #if AXIS_IS_TMC(Z3)
     #define Z3_MICROSTEPS    16
     #define Z3_RSENSE         0.11
     #define Z3_CHAIN_POS     -1
+    //#define Z3_INTERPOLATE true
   #endif
 
   #if AXIS_IS_TMC(Z4)
     #define Z4_MICROSTEPS    16
     #define Z4_RSENSE         0.11
     #define Z4_CHAIN_POS     -1
+    //#define Z4_INTERPOLATE true
   #endif
 
   #if AXIS_IS_TMC(E0)
     #define E0_MICROSTEPS    16
     #define E0_RSENSE         0.11
     #define E0_CHAIN_POS     -1
+    //#define E0_INTERPOLATE true
   #endif
 
   #if AXIS_IS_TMC(E1)
     #define E1_MICROSTEPS    16
     #define E1_RSENSE         0.11
     #define E1_CHAIN_POS     -1
+    //#define E1_INTERPOLATE true
   #endif
 
   #if AXIS_IS_TMC(E2)
     #define E2_MICROSTEPS    16
     #define E2_RSENSE         0.11
     #define E2_CHAIN_POS     -1
+    //#define E2_INTERPOLATE true
   #endif
 
   #if AXIS_IS_TMC(E3)
     #define E3_MICROSTEPS    16
     #define E3_RSENSE         0.11
     #define E3_CHAIN_POS     -1
+    //#define E3_INTERPOLATE true
   #endif
 
   #if AXIS_IS_TMC(E4)
     #define E4_MICROSTEPS    16
     #define E4_RSENSE         0.11
     #define E4_CHAIN_POS     -1
+    //#define E4_INTERPOLATE true
   #endif
 
   #if AXIS_IS_TMC(E5)
     #define E5_MICROSTEPS    16
     #define E5_RSENSE         0.11
     #define E5_CHAIN_POS     -1
+    //#define E5_INTERPOLATE true
   #endif
 
   #if AXIS_IS_TMC(E6)
     #define E6_MICROSTEPS    16
     #define E6_RSENSE         0.11
     #define E6_CHAIN_POS     -1
+    //#define E6_INTERPOLATE true
   #endif
 
   #if AXIS_IS_TMC(E7)
     #define E7_MICROSTEPS    16
     #define E7_RSENSE         0.11
     #define E7_CHAIN_POS     -1
+    //#define E7_INTERPOLATE true
   #endif
 
   /**

Marlin/src/feature/tmc_util.cpp

     TMC_HEND,
     TMC_HSTRT,
     TMC_SGT,
-    TMC_MSCNT
+    TMC_MSCNT,
+    TMC_INTERPOLATE
   };
   enum TMC_drv_status_enum : char {
     TMC_DRV_CODES,
         case TMC_PWM_SCALE: SERIAL_PRINT(st.PWM_SCALE(), DEC); break;
         case TMC_SGT: SERIAL_PRINT(st.sgt(), DEC); break;
         case TMC_STEALTHCHOP: serialprint_truefalse(st.en_pwm_mode()); break;
+        case TMC_INTERPOLATE: serialprint_truefalse(st.intpol()); break;
         default: break;
       }
     }
             SERIAL_ECHOPGM("/256");
           }
           break;
+        case TMC_INTERPOLATE: serialprint_truefalse(st.intpol()); break;
         default: break;
       }
     }
         case TMC_STEALTHCHOP: serialprint_truefalse(st.stealth()); break;
         case TMC_S2VSA: if (st.s2vsa()) SERIAL_CHAR('*'); break;
         case TMC_S2VSB: if (st.s2vsb()) SERIAL_CHAR('*'); break;
+        case TMC_INTERPOLATE: serialprint_truefalse(st.intpol()); break;
         default: break;
       }
     }
 
   #if HAS_DRIVER(TMC2660)
     static void _tmc_parse_drv_status(TMC2660Stepper, const TMC_drv_status_enum) { }
+    static void _tmc_status(TMC2660Stepper &st, const TMC_debug_enum i) {
+      switch (i) {
+        case TMC_INTERPOLATE: serialprint_truefalse(st.intpol()); break;
+        default: break;
+      }
+    }
   #endif
 
   template <typename TMC>
     #endif
     TMC_REPORT("stealthChop",        TMC_STEALTHCHOP);
     TMC_REPORT("msteps\t",           TMC_MICROSTEPS);
+    TMC_REPORT("interp\t",           TMC_INTERPOLATE);
     TMC_REPORT("tstep\t",            TMC_TSTEP);
     TMC_REPORT("PWM thresh.",        TMC_TPWMTHRS);
     TMC_REPORT("[mm/s]\t",           TMC_TPWMTHRS_MMS);

Marlin/src/inc/Conditionals_post.h

     #define Y_SPI_SENSORLESS Y_SENSORLESS
     #define Z_SPI_SENSORLESS Z_SENSORLESS
   #endif
+  #ifndef X_INTERPOLATE
+    #define X_INTERPOLATE INTERPOLATE
+  #endif
+  #ifndef X2_INTERPOLATE
+    #define X2_INTERPOLATE INTERPOLATE
+  #endif
+  #ifndef Y_INTERPOLATE
+    #define Y_INTERPOLATE INTERPOLATE
+  #endif
+  #ifndef Y2_INTERPOLATE
+    #define Y2_INTERPOLATE INTERPOLATE
+  #endif
+  #ifndef Z_INTERPOLATE
+    #define Z_INTERPOLATE INTERPOLATE
+  #endif
+  #ifndef Z2_INTERPOLATE
+    #define Z2_INTERPOLATE INTERPOLATE
+  #endif
+  #ifndef Z3_INTERPOLATE
+    #define Z3_INTERPOLATE INTERPOLATE
+  #endif
+  #ifndef Z4_INTERPOLATE
+    #define Z4_INTERPOLATE INTERPOLATE
+  #endif
+  #ifndef E0_INTERPOLATE
+    #define E0_INTERPOLATE INTERPOLATE
+  #endif
+  #ifndef E1_INTERPOLATE
+    #define E1_INTERPOLATE INTERPOLATE
+  #endif
+  #ifndef E2_INTERPOLATE
+    #define E2_INTERPOLATE INTERPOLATE
+  #endif
+  #ifndef E3_INTERPOLATE
+    #define E3_INTERPOLATE INTERPOLATE
+  #endif
+  #ifndef E4_INTERPOLATE
+    #define E4_INTERPOLATE INTERPOLATE
+  #endif
+  #ifndef E5_INTERPOLATE
+    #define E5_INTERPOLATE INTERPOLATE
+  #endif
+  #ifndef E6_INTERPOLATE
+    #define E6_INTERPOLATE INTERPOLATE
+  #endif
+  #ifndef E7_INTERPOLATE
+    #define E7_INTERPOLATE INTERPOLATE
+  #endif
 #endif
 
 #if (HAS_E_DRIVER(TMC2660) \

Marlin/src/module/stepper/trinamic.cpp

 #include <SPI.h>
 
 enum StealthIndex : uint8_t { STEALTH_AXIS_XY, STEALTH_AXIS_Z, STEALTH_AXIS_E };
-#define TMC_INIT(ST, STEALTH_INDEX) tmc_init(stepper##ST, ST##_CURRENT, ST##_MICROSTEPS, ST##_HYBRID_THRESHOLD, stealthchop_by_axis[STEALTH_INDEX], chopper_timing_##ST)
+#define TMC_INIT(ST, STEALTH_INDEX) tmc_init(stepper##ST, ST##_CURRENT, ST##_MICROSTEPS, ST##_HYBRID_THRESHOLD, stealthchop_by_axis[STEALTH_INDEX], chopper_timing_##ST, ST##_INTERPOLATE)
 
 //   IC = TMC model number
 //   ST = Stepper object letter
 
 #if HAS_DRIVER(TMC2130)
   template<char AXIS_LETTER, char DRIVER_ID, AxisEnum AXIS_ID>
-  void tmc_init(TMCMarlin<TMC2130Stepper, AXIS_LETTER, DRIVER_ID, AXIS_ID> &st, const uint16_t mA, const uint16_t microsteps, const uint32_t hyb_thrs, const bool stealth, const chopper_timing_t &chop_init) {
+  void tmc_init(TMCMarlin<TMC2130Stepper, AXIS_LETTER, DRIVER_ID, AXIS_ID> &st, const uint16_t mA, const uint16_t microsteps, const uint32_t hyb_thrs, const bool stealth, const chopper_timing_t &chop_init, const bool interpolate) {
     st.begin();
 
     CHOPCONF_t chopconf{0};
     chopconf.tbl = 0b01;
     chopconf.toff = chop_init.toff;
-    chopconf.intpol = INTERPOLATE;
+    chopconf.intpol = interpolate;
     chopconf.hend = chop_init.hend + 3;
     chopconf.hstrt = chop_init.hstrt - 1;
     TERN_(SQUARE_WAVE_STEPPING, chopconf.dedge = true);
 
 #if HAS_DRIVER(TMC2160)
   template<char AXIS_LETTER, char DRIVER_ID, AxisEnum AXIS_ID>
-  void tmc_init(TMCMarlin<TMC2160Stepper, AXIS_LETTER, DRIVER_ID, AXIS_ID> &st, const uint16_t mA, const uint16_t microsteps, const uint32_t hyb_thrs, const bool stealth, const chopper_timing_t &chop_init) {
+  void tmc_init(TMCMarlin<TMC2160Stepper, AXIS_LETTER, DRIVER_ID, AXIS_ID> &st, const uint16_t mA, const uint16_t microsteps, const uint32_t hyb_thrs, const bool stealth, const chopper_timing_t &chop_init, const bool interpolate) {
     st.begin();
 
     CHOPCONF_t chopconf{0};
     chopconf.tbl = 0b01;
     chopconf.toff = chop_init.toff;
-    chopconf.intpol = INTERPOLATE;
+    chopconf.intpol = interpolate;
     chopconf.hend = chop_init.hend + 3;
     chopconf.hstrt = chop_init.hstrt - 1;
     TERN_(SQUARE_WAVE_STEPPING, chopconf.dedge = true);
 
 #if HAS_DRIVER(TMC2208)
   template<char AXIS_LETTER, char DRIVER_ID, AxisEnum AXIS_ID>
-  void tmc_init(TMCMarlin<TMC2208Stepper, AXIS_LETTER, DRIVER_ID, AXIS_ID> &st, const uint16_t mA, const uint16_t microsteps, const uint32_t hyb_thrs, const bool stealth, const chopper_timing_t &chop_init) {
+  void tmc_init(TMCMarlin<TMC2208Stepper, AXIS_LETTER, DRIVER_ID, AXIS_ID> &st, const uint16_t mA, const uint16_t microsteps, const uint32_t hyb_thrs, const bool stealth, const chopper_timing_t &chop_init, const bool interpolate) {
     TMC2208_n::GCONF_t gconf{0};
     gconf.pdn_disable = true; // Use UART
     gconf.mstep_reg_select = true; // Select microsteps with UART
     TMC2208_n::CHOPCONF_t chopconf{0};
     chopconf.tbl = 0b01; // blank_time = 24
     chopconf.toff = chop_init.toff;
-    chopconf.intpol = INTERPOLATE;
+    chopconf.intpol = interpolate;
     chopconf.hend = chop_init.hend + 3;
     chopconf.hstrt = chop_init.hstrt - 1;
     TERN_(SQUARE_WAVE_STEPPING, chopconf.dedge = true);
 
 #if HAS_DRIVER(TMC2209)
   template<char AXIS_LETTER, char DRIVER_ID, AxisEnum AXIS_ID>
-  void tmc_init(TMCMarlin<TMC2209Stepper, AXIS_LETTER, DRIVER_ID, AXIS_ID> &st, const uint16_t mA, const uint16_t microsteps, const uint32_t hyb_thrs, const bool stealth, const chopper_timing_t &chop_init) {
+  void tmc_init(TMCMarlin<TMC2209Stepper, AXIS_LETTER, DRIVER_ID, AXIS_ID> &st, const uint16_t mA, const uint16_t microsteps, const uint32_t hyb_thrs, const bool stealth, const chopper_timing_t &chop_init, const bool interpolate) {
     TMC2208_n::GCONF_t gconf{0};
     gconf.pdn_disable = true; // Use UART
     gconf.mstep_reg_select = true; // Select microsteps with UART
     TMC2208_n::CHOPCONF_t chopconf{0};
     chopconf.tbl = 0b01; // blank_time = 24
     chopconf.toff = chop_init.toff;
-    chopconf.intpol = INTERPOLATE;
+    chopconf.intpol = interpolate;
     chopconf.hend = chop_init.hend + 3;
     chopconf.hstrt = chop_init.hstrt - 1;
     TERN_(SQUARE_WAVE_STEPPING, chopconf.dedge = true);
 
 #if HAS_DRIVER(TMC2660)
   template<char AXIS_LETTER, char DRIVER_ID, AxisEnum AXIS_ID>
-  void tmc_init(TMCMarlin<TMC2660Stepper, AXIS_LETTER, DRIVER_ID, AXIS_ID> &st, const uint16_t mA, const uint16_t microsteps, const uint32_t, const bool, const chopper_timing_t &chop_init) {
+  void tmc_init(TMCMarlin<TMC2660Stepper, AXIS_LETTER, DRIVER_ID, AXIS_ID> &st, const uint16_t mA, const uint16_t microsteps, const uint32_t, const bool, const chopper_timing_t &chop_init, const bool interpolate) {
     st.begin();
 
     TMC2660_n::CHOPCONF_t chopconf{0};
     st.rms_current(mA);
     st.microsteps(microsteps);
     TERN_(SQUARE_WAVE_STEPPING, st.dedge(true));
-    st.intpol(INTERPOLATE);
+    st.intpol(interpolate);
     st.diss2g(true); // Disable short to ground protection. Too many false readings?
     TERN_(TMC_DEBUG, st.rdsel(0b01));
   }
 
 #if HAS_DRIVER(TMC5130)
   template<char AXIS_LETTER, char DRIVER_ID, AxisEnum AXIS_ID>
-  void tmc_init(TMCMarlin<TMC5130Stepper, AXIS_LETTER, DRIVER_ID, AXIS_ID> &st, const uint16_t mA, const uint16_t microsteps, const uint32_t hyb_thrs, const bool stealth, const chopper_timing_t &chop_init) {
+  void tmc_init(TMCMarlin<TMC5130Stepper, AXIS_LETTER, DRIVER_ID, AXIS_ID> &st, const uint16_t mA, const uint16_t microsteps, const uint32_t hyb_thrs, const bool stealth, const chopper_timing_t &chop_init, const bool interpolate) {
     st.begin();
 
     CHOPCONF_t chopconf{0};
     chopconf.tbl = 0b01;
     chopconf.toff = chop_init.toff;
-    chopconf.intpol = INTERPOLATE;
+    chopconf.intpol = interpolate;
     chopconf.hend = chop_init.hend + 3;
     chopconf.hstrt = chop_init.hstrt - 1;
     TERN_(SQUARE_WAVE_STEPPING, chopconf.dedge = true);
 
 #if HAS_DRIVER(TMC5160)
   template<char AXIS_LETTER, char DRIVER_ID, AxisEnum AXIS_ID>
-  void tmc_init(TMCMarlin<TMC5160Stepper, AXIS_LETTER, DRIVER_ID, AXIS_ID> &st, const uint16_t mA, const uint16_t microsteps, const uint32_t hyb_thrs, const bool stealth, const chopper_timing_t &chop_init) {
+  void tmc_init(TMCMarlin<TMC5160Stepper, AXIS_LETTER, DRIVER_ID, AXIS_ID> &st, const uint16_t mA, const uint16_t microsteps, const uint32_t hyb_thrs, const bool stealth, const chopper_timing_t &chop_init, const bool interpolate) {
     st.begin();
 
     CHOPCONF_t chopconf{0};
     chopconf.tbl = 0b01;
     chopconf.toff = chop_init.toff;
-    chopconf.intpol = INTERPOLATE;
+    chopconf.intpol = interpolate;
     chopconf.hend = chop_init.hend + 3;
     chopconf.hstrt = chop_init.hstrt - 1;
     TERN_(SQUARE_WAVE_STEPPING, chopconf.dedge = true);