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Quick Fix: read scan code from PC98

led_matrix
tmk 11年前
親
f68c5bf0d3
コミット
eb776c1b79
3個のファイルの変更、46行の追加、11行の削除
ユニファイド表示 差分情報を表示
  1. 6
    3
      converter/pc98_usb/config.h
  2. 6
    0
      converter/pc98_usb/matrix.c
  3. 34
    8
      protocol/serial_soft.c

+ 6
- 3
converter/pc98_usb/config.h ファイルの表示

*/ */
#define SERIAL_BAUD 19200 #define SERIAL_BAUD 19200
#define SERIAL_PARITY_ODD #define SERIAL_PARITY_ODD
#define SERIAL_BIT_ORDER_MSB
#define SERIAL_BIT_ORDER_LSB


#define SERIAL_RXD_DDR DDRD #define SERIAL_RXD_DDR DDRD
#define SERIAL_RXD_PORT PORTD #define SERIAL_RXD_PORT PORTD
SERIAL_RXD_DDR &= ~(1<<SERIAL_RXD_BIT); \ SERIAL_RXD_DDR &= ~(1<<SERIAL_RXD_BIT); \
SERIAL_RXD_PORT |= (1<<SERIAL_RXD_BIT); \ SERIAL_RXD_PORT |= (1<<SERIAL_RXD_BIT); \
/* enable interrupt: INT2(rising edge) */ \ /* enable interrupt: INT2(rising edge) */ \
EICRA |= ((1<<ISC21)|(1<<ISC20)); \
/*EICRA |= ((1<<ISC21)|(1<<ISC20));*/ \
/* enable interrupt: INT2(falling edge) */ \
EICRA |= ((1<<ISC21)|(0<<ISC20)); \
EIMSK |= (1<<INT2); \ EIMSK |= (1<<INT2); \
} while (0) } while (0)
#define SERIAL_RXD_INT_ENTER() #define SERIAL_RXD_INT_ENTER()
/* clear interrupt flag */ \ /* clear interrupt flag */ \
EIFR = (1<<INTF2); \ EIFR = (1<<INTF2); \
} while (0) } while (0)
#define SERIAL_RXD_READ() (~SERIAL_RXD_PIN&(1<<SERIAL_RXD_BIT))
//#define SERIAL_RXD_READ() (~SERIAL_RXD_PIN&(1<<SERIAL_RXD_BIT))
#define SERIAL_RXD_READ() ((SERIAL_RXD_PIN&(1<<SERIAL_RXD_BIT)))


#define SERIAL_TXD_DDR DDRD #define SERIAL_TXD_DDR DDRD
#define SERIAL_TXD_PORT PORTD #define SERIAL_TXD_PORT PORTD

+ 6
- 0
converter/pc98_usb/matrix.c ファイルの表示

PC98_RDY_PORT |= (1<<PC98_RDY_BIT); PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
PC98_RTY_PORT |= (1<<PC98_RTY_BIT); PC98_RTY_PORT |= (1<<PC98_RTY_BIT);


DDRD |= 1<<7;



serial_init(); serial_init();


_delay_us(13); _delay_us(13);
PC98_RDY_PORT |= (1<<PC98_RDY_BIT); PC98_RDY_PORT |= (1<<PC98_RDY_BIT);


// PC98 ready
PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);

// initialize matrix state: all keys off // initialize matrix state: all keys off
for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00; for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;




uint8_t code; uint8_t code;
PC98_RDY_PORT |= (1<<PC98_RDY_BIT); PC98_RDY_PORT |= (1<<PC98_RDY_BIT);
_delay_us(30);
code = serial_recv(); code = serial_recv();
PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT); PC98_RDY_PORT &= ~(1<<PC98_RDY_BIT);
if (!code) return 0; if (!code) return 0;

+ 34
- 8
protocol/serial_soft.c ファイルの表示



#define WAIT_US (1000000/SERIAL_BAUD) #define WAIT_US (1000000/SERIAL_BAUD)


#if 1
#define WAIT_TICK (1000000/SERIAL_BAUD)
#define WAIT4(tick) _delay_us(tick)
#else
#define WAIT_TICK ((16000000/SERIAL_BAUD)/4 - 5)
static inline void WAIT4(uint8_t tick)
{
__asm__ __volatile__ (
"1: dec %0" "\n\t"
"nop" "\n\t"
"brne 1b"
:
: "r" (tick)
);
}
#endif

void serial_init(void) void serial_init(void)
{ {
SERIAL_RXD_INIT(); SERIAL_RXD_INIT();
static uint8_t rbuf_head = 0; static uint8_t rbuf_head = 0;
static uint8_t rbuf_tail = 0; static uint8_t rbuf_tail = 0;



uint8_t serial_recv(void) uint8_t serial_recv(void)
{ {
uint8_t data = 0; uint8_t data = 0;
/* detect edge of start bit */ /* detect edge of start bit */
ISR(SERIAL_RXD_VECT) ISR(SERIAL_RXD_VECT)
{ {
PORTD ^= 1<<7;
SERIAL_RXD_INT_ENTER() SERIAL_RXD_INT_ENTER()


uint8_t data = 0; uint8_t data = 0;
#endif #endif


/* to center of start bit */ /* to center of start bit */
_delay_us(WAIT_US/2);
//_delay_us(WAIT_US/2);
WAIT4(WAIT_TICK/2);
PORTD ^= 1<<7;
do { do {
/* to center of next bit */ /* to center of next bit */
_delay_us(WAIT_US);
//_delay_us(WAIT_US);
WAIT4(WAIT_TICK);


PORTD ^= 1<<7;
if (SERIAL_RXD_READ()) { if (SERIAL_RXD_READ()) {
data |= mask; data |= mask;
parity ^= 1; parity ^= 1;
} while (mask); } while (mask);


/* to center of parity bit */ /* to center of parity bit */
_delay_us(WAIT_US);
parity ^= SERIAL_RXD_READ();
//_delay_us(WAIT_US);
WAIT4(WAIT_TICK);
if (SERIAL_RXD_READ()) { parity ^= 1; }
PORTD ^= 1<<7;


/* to center of stop bit */ /* to center of stop bit */
_delay_us(WAIT_US);
_delay_us(WAIT_US/2);
//_delay_us(WAIT_US);
WAIT4(WAIT_TICK);


parity = 1;
uint8_t next = (rbuf_head + 1) % RBUF_SIZE; uint8_t next = (rbuf_head + 1) % RBUF_SIZE;
if (parity && next != rbuf_tail) {
//if (parity && next != rbuf_tail) {
if (next != rbuf_tail) {
rbuf[rbuf_head] = data; rbuf[rbuf_head] = data;
rbuf_head = next; rbuf_head = next;
} }


SERIAL_RXD_INT_EXIT(); SERIAL_RXD_INT_EXIT();
PORTD ^= 1<<7;
} }