Add initial files for PC98
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@ -106,11 +106,19 @@ ISR(SERIAL_RXD_VECT)
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SERIAL_RXD_INT_ENTER()
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uint8_t data = 0;
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#ifdef SERIAL_BIT_ORDER_MSB
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uint8_t mask = 0x80;
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#else
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uint8_t mask = 0x01;
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#endif
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#ifdef SERIAL_PARITY_ODD
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uint8_t parity = 0;
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#else
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uint8_t parity = 1;
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#endif
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/* to center of start bit */
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_delay_us(WAIT_US/2);
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do {
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@ -119,6 +127,7 @@ ISR(SERIAL_RXD_VECT)
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if (SERIAL_RXD_READ()) {
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data |= mask;
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parity ^= 1;
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}
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#ifdef SERIAL_BIT_ORDER_MSB
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mask >>= 1;
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@ -126,11 +135,18 @@ ISR(SERIAL_RXD_VECT)
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mask <<= 1;
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#endif
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} while (mask);
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/* to center of parity bit */
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_delay_us(WAIT_US);
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parity ^= SERIAL_RXD_READ();
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/* to center of stop bit */
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_delay_us(WAIT_US);
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_delay_us(WAIT_US/2);
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parity = 1;
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uint8_t next = (rbuf_head + 1) % RBUF_SIZE;
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if (next != rbuf_tail) {
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if (parity && next != rbuf_tail) {
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rbuf[rbuf_head] = data;
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rbuf_head = next;
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}
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