d30cb906f8
- Added acceleration to the homing routine. - Homing now accounts for different step rates when moving multiple axes without exceeding acceleration limits. - Homing now updates all internal positioning variables to machine zero after completion. - "Poor-man's" debounce delay added. - Updated the delay_us() function to perform faster and more accurate microsecond delays. Previously, the single increments would add noticeable time drift for larger delays. - Fix a bug in the stepper.c prescalar calculations that was changed in the last commit. - Other minor fixes.
69 lines
1.8 KiB
C
Executable File
69 lines
1.8 KiB
C
Executable File
/*
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nuts_bolts.c - Shared functions
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Part of Grbl
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Copyright (c) 2009-2011 Simen Svale Skogsrud
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Copyright (c) 2011-2012 Sungeun K. Jeon
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Grbl is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Grbl is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Grbl. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "nuts_bolts.h"
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#include <stdint.h>
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#include <stdlib.h>
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#include <util/delay.h>
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int read_double(char *line, uint8_t *char_counter, double *double_ptr)
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{
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char *start = line + *char_counter;
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char *end;
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*double_ptr = strtod(start, &end);
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if(end == start) {
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return(false);
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};
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*char_counter = end - line;
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return(true);
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}
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// Delays variable defined milliseconds. Compiler compatibility fix for _delay_ms(),
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// which only accepts constants in future compiler releases.
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void delay_ms(uint16_t ms)
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{
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while ( ms-- ) { _delay_ms(1); }
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}
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// Delays variable defined microseconds. Compiler compatibility fix for _delay_us(),
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// which only accepts constants in future compiler releases. Written to perform more
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// efficiently with larger delays, as the counter adds parasitic time in each iteration.
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void delay_us(uint16_t us)
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{
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while (us) {
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if (us < 10) {
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_delay_us(1);
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us--;
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} else if (us < 100) {
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_delay_us(10);
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us -= 10;
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} else if (us < 1000) {
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_delay_us(100);
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us -= 100;
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} else {
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_delay_ms(1);
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us -= 1000;
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}
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}
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}
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