🔧 Minor INPUT_SHAPING config fixes (MarlinFirmware#26882)

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

Marlin/Configuration_adv.h

@@ -1204,14 +1204,14 @@
 //#define INPUT_SHAPING_Y
 #if ANY(INPUT_SHAPING_X, INPUT_SHAPING_Y)
  #if ENABLED(INPUT_SHAPING_X)
- #define SHAPING_FREQ_X 40  // (Hz) The default dominant resonant frequency on the X axis.
- #define SHAPING_ZETA_X 0.15f // Damping ratio of the X axis (range: 0.0 = no damping to 1.0 = critical damping).
+ #define SHAPING_FREQ_X 40.0 // (Hz) The default dominant resonant frequency on the X axis.
+ #define SHAPING_ZETA_X  0.15 // Damping ratio of the X axis (range: 0.0 = no damping to 1.0 = critical damping).
  #endif
  #if ENABLED(INPUT_SHAPING_Y)
- #define SHAPING_FREQ_Y 40  // (Hz) The default dominant resonant frequency on the Y axis.
- #define SHAPING_ZETA_Y 0.15f // Damping ratio of the Y axis (range: 0.0 = no damping to 1.0 = critical damping).
+ #define SHAPING_FREQ_Y 40.0 // (Hz) The default dominant resonant frequency on the Y axis.
+ #define SHAPING_ZETA_Y  0.15 // Damping ratio of the Y axis (range: 0.0 = no damping to 1.0 = critical damping).
  #endif
- //#define SHAPING_MIN_FREQ 20  // By default the minimum of the shaping frequencies. Override to affect SRAM usage.
+ //#define SHAPING_MIN_FREQ 20.0 // (Hz) By default the minimum of the shaping frequencies. Override to affect SRAM usage.
  //#define SHAPING_MAX_STEPRATE 10000 // By default the maximum total step rate of the shaped axes. Override to affect SRAM usage.
  //#define SHAPING_MENU // Add a menu to the LCD to set shaping parameters.
 #endif

Marlin/src/module/stepper.h

@@ -159,10 +159,10 @@ constexpr ena_mask_t enable_overlap[] = {
  #endif
 
  #ifndef SHAPING_MIN_FREQ
- #define SHAPING_MIN_FREQ _MIN(0x7FFFFFFFL OPTARG(INPUT_SHAPING_X, SHAPING_FREQ_X) OPTARG(INPUT_SHAPING_Y, SHAPING_FREQ_Y))
+ #define SHAPING_MIN_FREQ _MIN(__FLT_MAX__ OPTARG(INPUT_SHAPING_X, SHAPING_FREQ_X) OPTARG(INPUT_SHAPING_Y, SHAPING_FREQ_Y))
  #endif
- constexpr uint16_t shaping_min_freq = SHAPING_MIN_FREQ,
-  shaping_echoes = max_step_rate / shaping_min_freq / 2 + 3;
+ constexpr float shaping_min_freq = SHAPING_MIN_FREQ;
+ constexpr uint16_t shaping_echoes = FLOOR(max_step_rate / shaping_min_freq / 2) + 3;
 
  typedef hal_timer_t shaping_time_t;
  enum shaping_echo_t { ECHO_NONE = 0, ECHO_FWD = 1, ECHO_BWD = 2 };