0b666ee733
Allow the LA 1.5 MAX value to be configured in Configuration_adv.h. Define a customizable LA10<>15 detection threshold in function of the above limit. Clamp the result of of the LA10->15 return value to always respect the new LA_K_MAX.
92 lines
2.3 KiB
C++
92 lines
2.3 KiB
C++
#include "la10compat.h"
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#include "Marlin.h"
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#include <float.h>
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static LA10C_MODE la10c_mode = LA10C_UNKNOWN; // Current LA compatibility mode
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static float la10c_orig_jerk = 0; // Unadjusted/saved e-jerk
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LA10C_MODE la10c_mode_get()
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{
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return la10c_mode;
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}
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void la10c_mode_change(LA10C_MODE mode)
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{
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if(mode == la10c_mode) return;
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// always restore to the last unadjusted E-jerk value
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if(la10c_orig_jerk)
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cs.max_jerk[E_AXIS] = la10c_orig_jerk;
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SERIAL_ECHOPGM("LA10C: Linear Advance mode: ");
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switch(mode)
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{
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case LA10C_UNKNOWN: SERIAL_ECHOLNPGM("UNKNOWN"); break;
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case LA10C_LA15: SERIAL_ECHOLNPGM("1.5"); break;
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case LA10C_LA10: SERIAL_ECHOLNPGM("1.0"); break;
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}
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la10c_mode = mode;
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// adjust the E-jerk if needed
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cs.max_jerk[E_AXIS] = la10c_jerk(cs.max_jerk[E_AXIS]);
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}
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// Approximate a LA10 value to a LA15 equivalent.
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static float la10c_convert(float k)
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{
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float new_K = k * 0.004 - 0.05;
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return new_K < 0? 0:
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new_K > (LA_K_MAX - FLT_EPSILON)? (LA_K_MAX - FLT_EPSILON):
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new_K;
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}
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float la10c_value(float k)
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{
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if(la10c_mode == LA10C_UNKNOWN)
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{
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// do not autodetect until a valid value is seen
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if(k == 0)
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return 0;
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else if(k < 0)
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return -1;
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la10c_mode_change(k < LA_LA10_MIN? LA10C_LA15: LA10C_LA10);
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}
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if(la10c_mode == LA10C_LA15)
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return (k >= 0 && k < LA_K_MAX? k: -1);
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else
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return (k >= 0? la10c_convert(k): -1);
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}
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float la10c_jerk(float j)
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{
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la10c_orig_jerk = j;
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if(la10c_mode != LA10C_LA10)
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return j;
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// check for a compatible range of values prior to convert (be sure that
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// a higher E-jerk would still be compatible wrt the E accell range)
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if(j < 4.5 && cs.max_acceleration_units_per_sq_second_normal[E_AXIS] < 2000)
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return j;
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// bring low E-jerk values into equivalent LA 1.5 values by
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// flattening the response in the (1-4.5) range using a piecewise
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// function. Is it truly worth to preserve the difference between
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// 1.5/2.5 E-jerk for LA1.0? Probably not, but we try nonetheless.
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j = j < 1.0? j * 3.625:
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j < 4.5? j * 0.25 + 3.375:
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j;
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SERIAL_ECHOPGM("LA10C: Adjusted E-Jerk: ");
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SERIAL_ECHOLN(j);
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return j;
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}
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