diff options
Diffstat (limited to 'keyboard/hhkb_rn42/config.h')
| -rw-r--r-- | keyboard/hhkb_rn42/config.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/keyboard/hhkb_rn42/config.h b/keyboard/hhkb_rn42/config.h index a8f76ae6b0..a0ab878eb8 100644 --- a/keyboard/hhkb_rn42/config.h +++ b/keyboard/hhkb_rn42/config.h @@ -48,6 +48,35 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. /* + * Hardware Serial(UART) + * Baud rate are calculated with round off(+0.5). + */ +#ifdef __AVR_ATmega32U4__ + /* iom32u4.h has no definition of UCSR1D. copy from iom32u2.h */ + #define UCSR1D _SFR_MEM8(0xCB) + #define RTSEN 0 + #define CTSEN 1 + + #define SERIAL_UART_BAUD 115200 + #define SERIAL_UART_DATA UDR1 + #define SERIAL_UART_UBRR ((F_CPU/(16.0*SERIAL_UART_BAUD)-1+0.5)) + #define SERIAL_UART_RXD_VECT USART1_RX_vect + #define SERIAL_UART_TXD_READY (UCSR1A&(1<<UDRE1)) + #define SERIAL_UART_INIT() do { \ + UBRR1L = (uint8_t) SERIAL_UART_UBRR; /* baud rate */ \ + UBRR1H = ((uint16_t)SERIAL_UART_UBRR>>8); /* baud rate */ \ + UCSR1B |= (1<<RXCIE1) | (1<<RXEN1); /* RX interrupt, RX: enable */ \ + UCSR1B |= (0<<TXCIE1) | (1<<TXEN1); /* TX interrupt, TX: enable */ \ + UCSR1C |= (0<<UPM11) | (0<<UPM10); /* parity: none(00), even(01), odd(11) */ \ + UCSR1D |= (0<<RTSEN) | (0<<CTSEN); /* RTS, CTS */ \ + sei(); \ + } while(0) +#else + #error "USART configuration is needed." +#endif + + +/* * Feature disable options * These options are also useful to firmware size reduction. */ |