diff options
Diffstat (limited to 'cpukit/score/cpu/avr/avr/iomx8.h')
| -rw-r--r-- | cpukit/score/cpu/avr/avr/iomx8.h | 47 |
1 files changed, 30 insertions, 17 deletions
diff --git a/cpukit/score/cpu/avr/avr/iomx8.h b/cpukit/score/cpu/avr/avr/iomx8.h index 46ffc47589..f145d9d27d 100644 --- a/cpukit/score/cpu/avr/avr/iomx8.h +++ b/cpukit/score/cpu/avr/avr/iomx8.h @@ -46,8 +46,11 @@ # error "Attempt to include more than one <avr/ioXXX.h> file." #endif -/* I/O registers */ - +/** + * @name I/O Registers + * + */ +/**@{**/ /* Port B */ #define PINB _SFR_IO8 (0x03) @@ -203,16 +206,19 @@ #define EEARL _SFR_IO8(0x21) #define EEARH _SFR_IO8(0X22) /* -Even though EEARH is not used by the mega48, the EEAR8 bit in the register -must be written to 0, according to the datasheet, hence the EEARH register -must be defined for the mega48. -*/ -/* 6-char sequence denoting where to find the EEPROM registers in memory space. - Adresses denoted in hex syntax with uppercase letters. Used by the EEPROM - subroutines. - First two letters: EECR address. - Second two letters: EEDR address. - Last two letters: EEAR address. */ + * Even though EEARH is not used by the mega48, the EEAR8 bit in the register + * must be written to 0, according to the datasheet, hence the EEARH register + * must be defined for the mega48. + */ +/* + * 6-char sequence denoting where to find the EEPROM registers in + * memory space. + * Adresses denoted in hex syntax with uppercase letters. Used by the EEPROM + * subroutines. + * First two letters: EECR address. + * Second two letters: EEDR address. + * Last two letters: EEAR address. + */ #define __EEPROM_REG_LOCATIONS__ 1F2021 @@ -617,9 +623,13 @@ must be defined for the mega48. #define UBRR0L _SFR_MEM8 (0xC4) #define UBRR0H _SFR_MEM8 (0xC5) #define UDR0 _SFR_MEM8 (0xC6) +/** @} */ -/* Interrupt vectors */ - +/** + * @name Interrupt Vectors + * + */ +/**@{**/ /* External Interrupt Request 0 */ #define INT0_vect _VECTOR(1) #define SIG_INTERRUPT0 _VECTOR(1) @@ -721,14 +731,17 @@ must be defined for the mega48. #define SPM_READY_vect _VECTOR(25) #define SIG_SPM_READY _VECTOR(25) -/* The mega48 and mega88 vector tables are single instruction entries (16 bits - per entry for an RJMP) while the mega168 table has double instruction - entries (32 bits per entry for a JMP). */ +/* + * The mega48 and mega88 vector tables are single instruction entries (16 bits + * per entry for an RJMP) while the mega168 table has double instruction + * entries (32 bits per entry for a JMP). + */ #if defined (__AVR_ATmega168__) # define _VECTORS_SIZE 104 #else # define _VECTORS_SIZE 52 #endif +/** @} */ #endif /* _AVR_IOM8_H_ */ |