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Synchronous USART support for PS/2 on V-USB stack

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This commit is contained in:
tmk 2011-02-20 17:46:02 +09:00
parent 239bdbf419
commit 47f5d8b545
11 changed files with 530 additions and 272 deletions
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94
ps2_vusb/config.h
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@ -3,7 +3,9 @@
#define VENDOR_ID 0xFEED
#define PRODUCT_ID 0x6512
#define PRODUCT_ID 0x2233
// TODO: share these strings with usbconfig.h
// Edit usbconfig.h to change these.
#define MANUFACTURER t.m.k.
#define PRODUCT PS/2 keyboard converter
#define DESCRIPTION convert PS/2 keyboard to USB
@ -33,36 +35,84 @@
#define PS2_CLOCK_PORT PORTD
#define PS2_CLOCK_PIN PIND
#define PS2_CLOCK_DDR DDRD
#define PS2_CLOCK_BIT 3
#define PS2_CLOCK_BIT 4
#define PS2_DATA_PORT PORTD
#define PS2_DATA_PIN PIND
#define PS2_DATA_DDR DDRD
#define PS2_DATA_BIT 7
#define PS2_DATA_BIT 0
/* External interrupt for PS/2 clock line (optional) */
#define PS2_INT_ENABLE() do { \
EIMSK |= (1<<INT1); \
EICRA |= ((1<<ISC11) | (0<<ISC10)); \
EIFR |= (1<<INTF1); \
// Synchronous USART is used to receive data from keyboard.
// Use RXD pin for PS/2 DATA line and XCK for PS/2 CLOCK.
// NOTE: This is recomended strongly if you use V-USB library.
#define PS2_USE_USART
// External or Pin Change Interrupt is used to receive data from keyboard.
// Use INT1 or PCINTxx for PS/2 CLOCK line. see below.
//#define PS2_USE_INT
#ifdef PS2_USE_USART
// synchronous, odd parity, 1-bit stop, 8-bit data, sample at falling edge
// set DDR of CLOCK as input to be slave
#define PS2_USART_INIT() do { \
PS2_CLOCK_DDR &= ~(1<<PS2_CLOCK_BIT); \
PS2_DATA_DDR &= ~(1<<PS2_DATA_BIT); \
UCSR0C = ((1 << UMSEL00) | \
(3 << UPM00) | \
(0 << USBS0) | \
(3 << UCSZ00) | \
(0 << UCPOL0)); \
UCSR0A = 0; \
UBRR0H = 0; \
UBRR0L = 0; \
} while (0)
#define PS2_USART_RX_INT_ON() do { \
UCSR0B = ((1 << RXCIE0) | \
(1 << RXEN0)); \
} while (0)
#define PS2_USART_RX_POLL_ON() do { \
UCSR0B = (1 << RXEN0); \
} while (0)
#define PS2_USART_OFF() do { \
UCSR0C = 0; \
UCSR0B &= ~((1 << RXEN0) | \
(1 << TXEN0)); \
} while (0)
#define PS2_USART_RX_READY (UCSR0A & (1<<RXC0))
#define PS2_USART_RX_DATA UDR0
#define PS2_USART_ERROR (UCSR0A & ((1<<FE0) | (1<<DOR0) | (1<<UPE0)))
#define PS2_USART_RX_VECT USART_RX_vect
#endif
#define PS2_INT_DISABLE() do { \
#ifdef PS2_USE_INT
/* INT1
#define PS2_INT_INIT() do { \
EICRA |= ((1<<ISC11) | \
(0<<ISC10)); \
} while (0)
#define PS2_INT_ON() do { \
EIMSK |= (1<<INT1); \
} while (0)
#define PS2_INT_OFF() do { \
EIMSK &= ~(1<<INT1); \
} while (0)
#define PS2_INT_VECT INT1_vect
/* Pin Change interrupt for PS/2 clock line (optional)
#define PS2_INT_ENABLE() do { \
PCMSK2 |= (1<<PCINT22); \
PCICR |= (1<<PCIE2); \
PCIFR |= (1<<PCIF2); \
} while (0)
#define PS2_INT_DISABLE() do { \
PCMSK2 &= ~(1<<PCINT22); \
PCICR &= ~(1<<PCIE); \
} while (0)
#define PS2_INT_VECT PCINT2_vect
*/
/* PCINT20 */
#define PS2_INT_INIT() do { \
PCICR |= (1<<PCIE2); \
} while (0)
#define PS2_INT_ON() do { \
PCMSK2 |= (1<<PCINT20); \
} while (0)
#define PS2_INT_OFF() do { \
PCMSK2 &= ~(1<<PCINT20); \
PCICR &= ~(1<<PCIE2); \
} while (0)
#define PS2_INT_VECT PCINT2_vect
#endif
#endif