ManuelW/grbl-LPC-CoreXY
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Planner execution time halved and bug fixes. Increased step rate limit to 30kHz.

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- Planner execute speed has been more than halved from 4ms to 1.9ms
when computing a plan for a single line segment during arc generation.
This means that Grbl can now run through an arc (or complex curve)
twice as fast as before without starving the buffer. For 0.1mm arc
segments, this means about the theoretical feed rate limit is about
3000mm/min for arcs now.

- Increased the Ranade timer frequency to 30kHz, as there doesn't seem
to be any problems with increasing the frequency. This means that the
maximum step frequency is now back at 30kHz.

- Added Zen Toolworks 7x7 defaults.
This commit is contained in:
Sonny Jeon
2012-12-10 18:50:18 -07:00
parent 9ba117c1bb
commit 3082fdbb6d
5 changed files with 129 additions and 98 deletions
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5
config.h
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@ -25,7 +25,7 @@
// IMPORTANT: Any changes here requires a full re-compiling of the source code to propagate them.
// Default settings. Used when resetting EEPROM. Change to desired name in defaults.h
#define DEFAULTS_SHERLINE_5400
#define DEFAULTS_GENERIC
// Serial baud rate
#define BAUD_RATE 9600
@ -122,7 +122,7 @@
// frequency goes up. So there will be little left for other processes like arcs.
// In future versions, more work will be done to increase the step rates but still stay around
// 20kHz by performing two steps per step event, rather than just one.
#define ISR_TICKS_PER_SECOND 20000L // Integer (Hz)
#define ISR_TICKS_PER_SECOND 30000L // Integer (Hz)
// The Ranade algorithm can use either floating point or long integers for its counters, but for
// integers the counter values must be scaled since these values can be very small (10^-6). This
@ -143,6 +143,7 @@
// in the stepper program and never runs slower than this value. If the RANADE_MULTIPLIER value
// changes, it will affect how this value works. So, if a zero is add/subtracted from the
// RANADE_MULTIPLIER value, do the same to this value if you want to same response.
// NOTE: Compute by (desired_step_rate/60) * RANADE_MULTIPLIER/ISR_TICKS_PER_SECOND. (mm/min)
#define MINIMUM_STEP_RATE 1000L // Integer (mult*mm/isr_tic)
// Minimum stepper rate. Only used by homing at this point. May be removed in later releases.