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avr_functions.h 4.3KB

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  1. /* Teensyduino Core Library
  2. * http://www.pjrc.com/teensy/
  3. * Copyright (c) 2013 PJRC.COM, LLC.
  4. *
  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:
  12. *
  13. * 1. The above copyright notice and this permission notice shall be
  14. * included in all copies or substantial portions of the Software.
  15. *
  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.
  20. *
  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
  28. * SOFTWARE.
  29. */
  30. #ifndef _avr_functions_h_
  31. #define _avr_functions_h_
  32. #include <inttypes.h>
  33. #ifdef __cplusplus
  34. extern "C" {
  35. #endif
  36. void eeprom_initialize(void);
  37. uint8_t eeprom_read_byte(const uint8_t *addr) __attribute__ ((pure));
  38. uint16_t eeprom_read_word(const uint16_t *addr) __attribute__ ((pure));
  39. uint32_t eeprom_read_dword(const uint32_t *addr) __attribute__ ((pure));
  40. void eeprom_read_block(void *buf, const void *addr, uint32_t len);
  41. void eeprom_write_byte(uint8_t *addr, uint8_t value);
  42. void eeprom_write_word(uint16_t *addr, uint16_t value);
  43. void eeprom_write_dword(uint32_t *addr, uint32_t value);
  44. void eeprom_write_block(const void *buf, void *addr, uint32_t len);
  45. static inline float eeprom_read_float(const float *addr) __attribute__((pure, always_inline, unused));
  46. static inline float eeprom_read_float(const float *addr)
  47. {
  48. union {float f; uint32_t u32;} u;
  49. u.u32 = eeprom_read_dword((const uint32_t *)addr);
  50. return u.f;
  51. }
  52. static inline void eeprom_write_float(float *addr, float value) __attribute__((always_inline, unused));
  53. static inline void eeprom_write_float(float *addr, float value)
  54. {
  55. union {float f; uint32_t u32;} u;
  56. u.f = value;
  57. eeprom_write_dword((uint32_t *)addr, u.u32);
  58. }
  59. static inline void eeprom_update_byte(uint8_t *addr, uint8_t value) __attribute__((always_inline, unused));
  60. static inline void eeprom_update_byte(uint8_t *addr, uint8_t value)
  61. {
  62. eeprom_write_byte(addr, value);
  63. }
  64. static inline void eeprom_update_word(uint16_t *addr, uint16_t value) __attribute__((always_inline, unused));
  65. static inline void eeprom_update_word(uint16_t *addr, uint16_t value)
  66. {
  67. eeprom_write_word(addr, value);
  68. }
  69. static inline void eeprom_update_dword(uint32_t *addr, uint32_t value) __attribute__((always_inline, unused));
  70. static inline void eeprom_update_dword(uint32_t *addr, uint32_t value)
  71. {
  72. eeprom_write_dword(addr, value);
  73. }
  74. static inline void eeprom_update_float(float *addr, float value) __attribute__((always_inline, unused));
  75. static inline void eeprom_update_float(float *addr, float value)
  76. {
  77. union {float f; uint32_t u32;} u;
  78. u.f = value;
  79. eeprom_write_dword((uint32_t *)addr, u.u32);
  80. }
  81. static inline void eeprom_update_block(const void *buf, void *addr, uint32_t len) __attribute__((always_inline, unused));
  82. static inline void eeprom_update_block(const void *buf, void *addr, uint32_t len)
  83. {
  84. eeprom_write_block(buf, addr, len);
  85. }
  86. char * ultoa(unsigned long val, char *buf, int radix);
  87. char * ltoa(long val, char *buf, int radix);
  88. static inline char * utoa(unsigned int val, char *buf, int radix) __attribute__((always_inline, unused));
  89. static inline char * utoa(unsigned int val, char *buf, int radix) { return ultoa(val, buf, radix); }
  90. static inline char * itoa(int val, char *buf, int radix) __attribute__((always_inline, unused));
  91. static inline char * itoa(int val, char *buf, int radix) { return ltoa(val, buf, radix); }
  92. char * dtostrf(float val, int width, unsigned int precision, char *buf);
  93. #ifdef __cplusplus
  94. }
  95. #endif
  96. #endif