1 /* Teensyduino Core Library
2 * http://www.pjrc.com/teensy/
3 * Copyright (c) 2013 PJRC.COM, LLC.
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * 1. The above copyright notice and this permission notice shall be
14 * included in all copies or substantial portions of the Software.
16 * 2. If the Software is incorporated into a build system that allows
17 * selection among a list of target devices, then similar target
18 * devices manufactured by PJRC.COM must be included in the list of
19 * target devices and selectable in the same manner.
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
25 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
26 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
27 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 #ifndef _avr_functions_h_
32 #define _avr_functions_h_
40 void eeprom_initialize(void);
41 uint8_t eeprom_read_byte(const uint8_t *addr) __attribute__ ((pure));
42 uint16_t eeprom_read_word(const uint16_t *addr) __attribute__ ((pure));
43 uint32_t eeprom_read_dword(const uint32_t *addr) __attribute__ ((pure));
44 void eeprom_read_block(void *buf, const void *addr, uint32_t len);
45 void eeprom_write_byte(uint8_t *addr, uint8_t value);
46 void eeprom_write_word(uint16_t *addr, uint16_t value);
47 void eeprom_write_dword(uint32_t *addr, uint32_t value);
48 void eeprom_write_block(const void *buf, void *addr, uint32_t len);
49 int eeprom_is_ready(void);
50 #define eeprom_busy_wait() do {} while (!eeprom_is_ready())
52 static inline float eeprom_read_float(const float *addr) __attribute__((pure, always_inline, unused));
53 static inline float eeprom_read_float(const float *addr)
55 union {float f; uint32_t u32;} u;
56 u.u32 = eeprom_read_dword((const uint32_t *)addr);
59 static inline void eeprom_write_float(float *addr, float value) __attribute__((always_inline, unused));
60 static inline void eeprom_write_float(float *addr, float value)
62 union {float f; uint32_t u32;} u;
64 eeprom_write_dword((uint32_t *)addr, u.u32);
66 static inline void eeprom_update_byte(uint8_t *addr, uint8_t value) __attribute__((always_inline, unused));
67 static inline void eeprom_update_byte(uint8_t *addr, uint8_t value)
69 eeprom_write_byte(addr, value);
71 static inline void eeprom_update_word(uint16_t *addr, uint16_t value) __attribute__((always_inline, unused));
72 static inline void eeprom_update_word(uint16_t *addr, uint16_t value)
74 eeprom_write_word(addr, value);
76 static inline void eeprom_update_dword(uint32_t *addr, uint32_t value) __attribute__((always_inline, unused));
77 static inline void eeprom_update_dword(uint32_t *addr, uint32_t value)
79 eeprom_write_dword(addr, value);
81 static inline void eeprom_update_float(float *addr, float value) __attribute__((always_inline, unused));
82 static inline void eeprom_update_float(float *addr, float value)
84 union {float f; uint32_t u32;} u;
86 eeprom_write_dword((uint32_t *)addr, u.u32);
88 static inline void eeprom_update_block(const void *buf, void *addr, uint32_t len) __attribute__((always_inline, unused));
89 static inline void eeprom_update_block(const void *buf, void *addr, uint32_t len)
91 eeprom_write_block(buf, addr, len);
95 char * ultoa(unsigned long val, char *buf, int radix);
96 char * ltoa(long val, char *buf, int radix);
97 static inline char * utoa(unsigned int val, char *buf, int radix) __attribute__((always_inline, unused));
98 static inline char * utoa(unsigned int val, char *buf, int radix) { return ultoa(val, buf, radix); }
99 static inline char * itoa(int val, char *buf, int radix) __attribute__((always_inline, unused));
100 static inline char * itoa(int val, char *buf, int radix) { return ltoa(val, buf, radix); }
101 char * dtostrf(float val, int width, unsigned int precision, char *buf);