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- /* Copyright 2012 Jun Wako <[email protected]> */
- /* 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_bin8(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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