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