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print.c
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/*
print.c - Functions for formatting output strings
Part of Grbl
Copyright (c) 2009-2011 Simen Svale Skogsrud
Copyright (c) 2011-2012 Sungeun K. Jeon
Grbl is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Grbl is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Grbl. If not, see <http://www.gnu.org/licenses/>.
*/
/* This code was initially inspired by the wiring_serial module by David A. Mellis which
used to be a part of the Arduino project. */
#include <math.h>
#include <avr/pgmspace.h>
#include "config.h"
#include "serial.h"
void printString(const char *s)
{
while (*s)
serial_write(*s++);
}
// Print a string stored in PGM-memory
void printPgmString(const char *s)
{
char c;
while ((c = pgm_read_byte_near(s++)))
serial_write(c);
}
// void printIntegerInBase(unsigned long n, unsigned long base)
// {
// unsigned char buf[8 * sizeof(long)]; // Assumes 8-bit chars.
// unsigned long i = 0;
//
// if (n == 0) {
// serial_write('0');
// return;
// }
//
// while (n > 0) {
// buf[i++] = n % base;
// n /= base;
// }
//
// for (; i > 0; i--)
// serial_write(buf[i - 1] < 10 ?
// '0' + buf[i - 1] :
// 'A' + buf[i - 1] - 10);
// }
void print_uint8_base2(uint8_t n)
{
unsigned char buf[8];
uint8_t i = 0;
for (; i < 8; i++) {
buf[i] = n & 1;
n >>= 1;
}
for (; i > 0; i--)
serial_write('0' + buf[i - 1]);
}
static void print_uint32_base10(unsigned long n)
{
unsigned char buf[32];
uint8_t i = 0;
if (n == 0) {
serial_write('0');
return;
}
while (n > 0) {
buf[i++] = n % 10;
n /= 10;
}
for (; i > 0; i--)
serial_write('0' + buf[i - 1]);
}
void printInteger(long n)
{
if (n < 0) {
serial_write('-');
n = -n;
}
print_uint32_base10(n);
}
void printFloat(double n)
{
if (n < 0) {
serial_write('-');
n = -n;
}
n += 0.5/DECIMAL_MULTIPLIER; // Add rounding factor
long integer_part;
integer_part = (int)n;
print_uint32_base10(integer_part);
serial_write('.');
n -= integer_part;
int decimals = DECIMAL_PLACES;
uint8_t decimal_part;
while(decimals-- > 0) {
n *= 10;
decimal_part = (int) n;
serial_write('0'+decimal_part);
n -= decimal_part;
}
}