1 /* Copyright 2012 Jun Wako <wakojun@gmail.com> */
2 /* Very basic print functions, intended to be used with usb_debug_only.c
3 * http://www.pjrc.com/teensy/
4 * Copyright (c) 2008 PJRC.COM, LLC
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
26 #include <avr/pgmspace.h>
30 #define sendchar(c) do { if (print_enable && print_sendchar_func) (print_sendchar_func)(c); } while (0)
33 int8_t (*print_sendchar_func)(uint8_t) = 0;
34 bool print_enable = true;
37 /* print string stored in data memory(SRAM)
38 * print_P("hello world");
39 * This consumes precious SRAM memory space for string.
41 void print_S(const char *s)
47 if (c == '\n') sendchar('\r');
52 /* print string stored in program memory(FLASH)
53 * print_P(PSTR("hello world");
54 * This consumes relatively abundant FLASH memory area not SRAM.
56 void print_P(const char *s)
60 c = pgm_read_byte(s++);
62 if (c == '\n') sendchar('\r');
69 sendchar('\r'); sendchar('\n');
82 return (i < 10 ? '0' + i : 'A' + i - 10);
86 void print_int(uint16_t data, uint8_t base)
90 if ((base & SIGNED) && (data & 0x8000)) {
99 *(--p) = itoc(n - data*base);
101 if (buf[0]) *(--p) = buf[0];
105 void print_dec(uint16_t data)
107 print_int(data, DEC);
110 void print_decs(int16_t data)
112 print_int(data, DEC|SIGNED);
117 void print_hex4(uint8_t data)
119 sendchar(data + ((data < 10) ? '0' : 'A' - 10));
122 void print_hex8(uint8_t data)
125 print_hex4(data&0x0F);
128 void print_hex16(uint16_t data)
134 void print_hex32(uint32_t data)
136 print_hex16(data>>16);
141 void print_bin(uint8_t data)
143 for (int i = 7; i >= 0; i--) {
144 sendchar((data & (1<<i)) ? '1' : '0');
148 void print_bin16(uint16_t data)
154 void print_bin32(uint32_t data)
156 print_bin8(data>>24);
157 print_bin8(data>>16);
162 void print_bin_reverse8(uint8_t data)
164 for (int i = 0; i < 8; i++) {
165 sendchar((data & (1<<i)) ? '1' : '0');
169 void print_bin_reverse16(uint16_t data)
171 print_bin_reverse8(data);
172 print_bin_reverse8(data>>8);
175 void print_bin_reverse32(uint32_t data)
177 print_bin_reverse8(data);
178 print_bin_reverse8(data>>8);
179 print_bin_reverse8(data>>16);
180 print_bin_reverse8(data>>24);