1 /* This file has been prepared for Doxygen automatic documentation generation.*/

59 #ifndef EEPROM_DRIVER_H

60 #define EEPROM_DRIVER_H

61 

62 #include "compiler.h"

63 

64 //#define MAPPED_EEPROM_START 0x1000

65 #define EEPROM_PAGESIZE 32

66 #define EEPROM(_pageAddr, _byteAddr) \

67  ((uint8_t *) MAPPED_EEPROM_START)[_pageAddr*EEPROM_PAGESIZE + _byteAddr]

68 

69 /* Definitions of macros. */

70 

78 #define EEPROM_EnablePowerReduction() ( NVM.CTRLB |= NVM_EPRM_bm )

79 

84 #define EEPROM_DisablePowerReduction() ( NVM.CTRLB &= ~NVM_EPRM_bm )

85 

95 #define EEPROM_EnableMapping() ( NVM.CTRLB |= NVM_EEMAPEN_bm )

96 

102 #define EEPROM_DisableMapping() ( NVM.CTRLB &= ~NVM_EEMAPEN_bm )

103 

112 #define NVM_EXEC() asm("push r30" "\n\t" \

113  "push r31" "\n\t" \

114  "push r16" "\n\t" \

115  "push r18" "\n\t" \

116  "ldi r30, 0xCB" "\n\t" \

117  "ldi r31, 0x01" "\n\t" \

118  "ldi r16, 0xD8" "\n\t" \

119  "ldi r18, 0x01" "\n\t" \

120  "out 0x34, r16" "\n\t" \

121  "st Z, r18" "\n\t" \

122  "pop r18" "\n\t" \

123  "pop r16" "\n\t" \

124  "pop r31" "\n\t" \

125  "pop r30" "\n\t" \

126  )

127 

128 /* Prototyping of functions. */

129 void EEPROM_WriteByte ( uint8_t pageAddr, uint8_t byteAddr, uint8_t value );

130  void EEPROM_WriteBytes ( uint8_t pageAddr, uint8_t byteAddr, uint8_t len, uint32_t value );

131 uint8_t EEPROM_ReadByte ( uint8_t pageAddr, uint8_t byteAddr );

132 uint32_t EEPROM_ReadBytes ( uint8_t pageAddr, uint8_t byteAddr, uint8_t len );

133 void EEPROM_WaitForNVM ( void );

134 void EEPROM_FlushBuffer ( void );

135 void EEPROM_LoadByte ( uint8_t byteAddr, uint8_t value );

136 void EEPROM_LoadPage ( const uint8_t * values );

137 void EEPROM_AtomicWritePage ( uint8_t pageAddr );

138 void EEPROM_ErasePage ( uint8_t pageAddress );

139 void EEPROM_SplitWritePage ( uint8_t pageAddr );

140 void EEPROM_EraseAll ( void );

141 

142 void eeprom_demo ( void );

143 

144 #endif