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/* Copyright 2012 Jun Wako <wakojun@gmail.com> */
/* Very basic print functions, intended to be used with usb_debug_only.c
* http://www.pjrc.com/teensy/
* Copyright (c) 2008 PJRC.COM, LLC
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <avr/io.h>
#include <avr/pgmspace.h>
#include "print.h"
#define sendchar(c) do { if (print_enable && print_sendchar_func) (print_sendchar_func)(c); } while (0)
int8_t (*print_sendchar_func)(uint8_t) = 0;
bool print_enable = true;
/* print string stored in data memory(SRAM)
* print_P("hello world");
* This consumes precious SRAM memory space for string.
*/
void print_S(const char *s)
{
uint8_t c;
while (1) {
c = *s++;
if (!c) break;
if (c == '\n') sendchar('\r');
sendchar(c);
}
}
/* print string stored in program memory(FLASH)
* print_P(PSTR("hello world");
* This consumes relatively abundant FLASH memory area not SRAM.
*/
void print_P(const char *s)
{
uint8_t c;
while (1) {
c = pgm_read_byte(s++);
if (!c) break;
if (c == '\n') sendchar('\r');
sendchar(c);
}
}
void print_CRLF(void)
{
sendchar('\r'); sendchar('\n');
}
#define SIGNED 0x80
#define BIN 2
#define OCT 8
#define DEC 10
#define HEX 16
static inline
char itoc(uint8_t i)
{
return (i < 10 ? '0' + i : 'A' + i - 10);
}
static inline
void print_int(uint16_t data, uint8_t base)
{
char buf[7] = {'\0'};
char *p = &buf[6];
if ((base & SIGNED) && (data & 0x8000)) {
data = -data;
buf[0] = '-';
}
base &= ~SIGNED;
uint16_t n;
do {
n = data;
data /= base;
*(--p) = itoc(n - data*base);
} while (data);
if (buf[0]) *(--p) = buf[0];
print_S(p);
}
void print_dec(uint16_t data)
{
print_int(data, DEC);
}
void print_decs(int16_t data)
{
print_int(data, DEC|SIGNED);
}
static inline
void print_hex4(uint8_t data)
{
sendchar(data + ((data < 10) ? '0' : 'A' - 10));
}
void print_hex8(uint8_t data)
{
print_hex4(data>>4);
print_hex4(data&0x0F);
}
void print_hex16(uint16_t data)
{
print_hex8(data>>8);
print_hex8(data);
}
void print_hex32(uint32_t data)
{
print_hex16(data>>16);
print_hex16(data);
}
void print_bin(uint8_t data)
{
for (int i = 7; i >= 0; i--) {
sendchar((data & (1<<i)) ? '1' : '0');
}
}
void print_bin16(uint16_t data)
{
print_bin8(data>>8);
print_bin8(data);
}
void print_bin32(uint32_t data)
{
print_bin8(data>>24);
print_bin8(data>>16);
print_bin8(data>>8);
print_bin8(data);
}
void print_bin_reverse8(uint8_t data)
{
for (int i = 0; i < 8; i++) {
sendchar((data & (1<<i)) ? '1' : '0');
}
}
void print_bin_reverse16(uint16_t data)
{
print_bin_reverse8(data);
print_bin_reverse8(data>>8);
}
void print_bin_reverse32(uint32_t data)
{
print_bin_reverse8(data);
print_bin_reverse8(data>>8);
print_bin_reverse8(data>>16);
print_bin_reverse8(data>>24);
}
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