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
27 #include <avr/pgmspace.h>
29 #define sendchar(c) do { if (print_enable && print_sendchar_func) (print_sendchar_func)(c); } while (0)
32 int8_t (*print_sendchar_func)(uint8_t) = NULL;
33 bool print_enable = false;
35 /* print string stored in data memory(SRAM)
36 * print_P("hello world");
37 * This consumes precious SRAM memory space for string.
39 void print_S(const char *s)
45 if (c == '\n') sendchar('\r');
50 /* print string stored in program memory(FLASH)
51 * print_P(PSTR("hello world");
52 * This consumes relatively abundant FLASH memory area not SRAM.
54 void print_P(const char *s)
58 c = pgm_read_byte(s++);
60 if (c == '\n') sendchar('\r');
66 void print_hex4(uint8_t data)
68 sendchar(data + ((data < 10) ? '0' : 'A' - 10));
71 void print_hex8(uint8_t data)
74 print_hex4(data&0x0F);
77 void print_hex16(uint16_t data)
83 void print_hex32(uint32_t data)
85 print_hex16(data>>16);
89 void print_dec8(uint8_t data)
91 if (data/100) sendchar('0' + (data/100));
92 if (data/100 || data%100/10) sendchar('0' + (data%100/10));
93 sendchar('0' + (data%10));
96 void print_dec16(uint16_t data)
101 void print_dec32(uint32_t data)
106 void print_bin(uint8_t data)
108 for (int i = 7; i >= 0; i--) {
109 sendchar((data & (1<<i)) ? '1' : '0');
113 void print_bin16(uint16_t data)
119 void print_bin32(uint32_t data)
121 print_bin8(data>>24);
122 print_bin8(data>>16);
127 void print_bin_reverse8(uint8_t data)
129 for (int i = 0; i < 8; i++) {
130 sendchar((data & (1<<i)) ? '1' : '0');
134 void print_bin_reverse16(uint16_t data)
136 print_bin_reverse8(data);
137 print_bin_reverse8(data>>8);
140 void print_bin_reverse32(uint32_t data)
142 print_bin_reverse8(data);
143 print_bin_reverse8(data>>8);
144 print_bin_reverse8(data>>16);
145 print_bin_reverse8(data>>24);