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Add initial files for PC98

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tmk 2013-02-22 09:53:46 +09:00
parent 7a31451a07
commit f68c5bf0d3
8 changed files with 720 additions and 1 deletions
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18
protocol/serial_soft.c
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@ -106,11 +106,19 @@ ISR(SERIAL_RXD_VECT)
SERIAL_RXD_INT_ENTER()
uint8_t data = 0;
#ifdef SERIAL_BIT_ORDER_MSB
uint8_t mask = 0x80;
#else
uint8_t mask = 0x01;
#endif
#ifdef SERIAL_PARITY_ODD
uint8_t parity = 0;
#else
uint8_t parity = 1;
#endif
/* to center of start bit */
_delay_us(WAIT_US/2);
do {
@ -119,6 +127,7 @@ ISR(SERIAL_RXD_VECT)
if (SERIAL_RXD_READ()) {
data |= mask;
parity ^= 1;
}
#ifdef SERIAL_BIT_ORDER_MSB
mask >>= 1;
@ -126,11 +135,18 @@ ISR(SERIAL_RXD_VECT)
mask <<= 1;
#endif
} while (mask);
/* to center of parity bit */
_delay_us(WAIT_US);
parity ^= SERIAL_RXD_READ();
/* to center of stop bit */
_delay_us(WAIT_US);
_delay_us(WAIT_US/2);
parity = 1;
uint8_t next = (rbuf_head + 1) % RBUF_SIZE;
if (next != rbuf_tail) {
if (parity && next != rbuf_tail) {
rbuf[rbuf_head] = data;
rbuf_head = next;
}