7b29ce29b4
Allow existing gcode using LA10 to transparently take advantage of LA15 by using a simple linear conversion function based on experimental results with the MK3 implementation of linear advance. Autodetect LA10 values based on the first M900 instruction contained in the print. In order to support printing mixed files without resetting the printer we also reset the autodetection status when starting a new SD print and/or when explicitly disabling LA. Since we cannot reliably detect whether a new print is started when printing via USB, also reset the detection status when homing in G28, which is generally performed once at each print. Note that this doesn't clear the previous K value, it only allows a subsequent M900 to provide LA10 values when printed after a LA15 file.
40 lines
1.5 KiB
C
40 lines
1.5 KiB
C
// la10compat: LA10->LA15 conversion
|
|
//
|
|
// When the current mode is UNKNOWN autodetection is active and any K<10
|
|
// will set the mode to LA15, LA10 is set otherwise. When LA10
|
|
// compatbility mode is active the K factor is converted to a LA15
|
|
// equivalent (that is, the return value is always a LA15 value).
|
|
//
|
|
// Once the interpretation mode has been set it is kept until the mode
|
|
// is explicitly reset. This is done to handle transparent fallback for
|
|
// old firmware revisions in combination with the following gcode
|
|
// sequence:
|
|
//
|
|
// M900 K0.01 ; set LA15 value (interpreted by any firmware)
|
|
// M900 K10 ; set LA10 value (ignored by LA15 firmware)
|
|
//
|
|
// A LA15 firmware without this module will only parse the first
|
|
// correctly, rejecting the second. A LA10 FW will parse both, but keep
|
|
// the last value. Since the LA15 value, if present, corresponds to the
|
|
// truth value, the compatibility stub needs to "lock" onto the first
|
|
// seen value for the current print.
|
|
//
|
|
// The mode needs to be carefully reset for each print in order for
|
|
// diffent versions of M900 to be interpreted independently.
|
|
|
|
#pragma once
|
|
|
|
enum __attribute__((packed)) LA10C_MODE
|
|
{
|
|
LA10C_UNKNOWN = 0,
|
|
LA10C_LA15 = 1,
|
|
LA10C_LA10 = 2
|
|
};
|
|
|
|
// Explicitly set/reset the interpretation mode for la10c_value()
|
|
void la10c_mode_change(LA10C_MODE mode);
|
|
static inline void la10c_reset() { la10c_mode_change(LA10C_UNKNOWN); }
|
|
|
|
// Return a LA15 K value according to the supplied value and mode
|
|
float la10c_value(float k);
|