| Line 150... |
Line 150... |
m_last_tx = i_tx;
|
m_last_tx = i_tx;
|
|
|
if (m_rx_state == RXIDLE) {
|
if (m_rx_state == RXIDLE) {
|
if (!i_tx) {
|
if (!i_tx) {
|
m_rx_state = RXDATA;
|
m_rx_state = RXDATA;
|
m_rx_baudcounter =m_baud_counts+m_baud_counts/2;
|
m_rx_baudcounter =m_baud_counts+m_baud_counts/2-1;
|
m_rx_baudcounter -= m_rx_changectr;
|
m_rx_baudcounter -= m_rx_changectr;
|
m_rx_busy = 0;
|
m_rx_busy = 0;
|
m_rx_data = 0;
|
m_rx_data = 0;
|
}
|
}
|
} else if (m_rx_baudcounter <= 0) {
|
} else if (m_rx_baudcounter <= 0) {
|
| Line 180... |
Line 180... |
// bit N-1
|
// bit N-1
|
// (possible parity bit)
|
// (possible parity bit)
|
// stop bit
|
// stop bit
|
// (possible secondary stop bit)
|
// (possible secondary stop bit)
|
m_rx_data = ((i_tx&1)<<31) | (m_rx_data>>1);
|
m_rx_data = ((i_tx&1)<<31) | (m_rx_data>>1);
|
} m_rx_baudcounter = m_baud_counts;
|
} m_rx_baudcounter = m_baud_counts-1;
|
} else
|
} else
|
m_rx_baudcounter--;
|
m_rx_baudcounter--;
|
|
|
if (m_tx_state == TXIDLE) {
|
if (m_tx_state == TXIDLE) {
|
struct pollfd pb;
|
struct pollfd pb;
|
| Line 216... |
Line 216... |
m_tx_data |= (p<<(m_nbits+m_nparity));
|
m_tx_data |= (p<<(m_nbits+m_nparity));
|
}
|
}
|
m_tx_busy = (1<<(m_nbits+m_nparity+m_nstop+1))-1;
|
m_tx_busy = (1<<(m_nbits+m_nparity+m_nstop+1))-1;
|
m_tx_state = TXDATA;
|
m_tx_state = TXDATA;
|
o_rx = 0;
|
o_rx = 0;
|
m_tx_baudcounter = m_baud_counts;
|
m_tx_baudcounter = m_baud_counts-1;
|
}
|
}
|
}
|
}
|
} else if (m_tx_baudcounter == 0) {
|
} else if (m_tx_baudcounter <= 0) {
|
m_tx_data >>= 1;
|
m_tx_data >>= 1;
|
m_tx_busy >>= 1;
|
m_tx_busy >>= 1;
|
if (!m_tx_busy)
|
if (!m_tx_busy)
|
m_tx_state = TXIDLE;
|
m_tx_state = TXIDLE;
|
else
|
else
|
m_tx_baudcounter = m_baud_counts;
|
m_tx_baudcounter = m_baud_counts-1;
|
o_rx = m_tx_data&1;
|
o_rx = m_tx_data&1;
|
} else {
|
} else {
|
m_tx_baudcounter--;
|
m_tx_baudcounter--;
|
o_rx = m_tx_data&1;
|
o_rx = m_tx_data&1;
|
}
|
}
|
| Line 246... |
Line 246... |
m_last_tx = i_tx;
|
m_last_tx = i_tx;
|
|
|
if (m_rx_state == RXIDLE) {
|
if (m_rx_state == RXIDLE) {
|
if (!i_tx) {
|
if (!i_tx) {
|
m_rx_state = RXDATA;
|
m_rx_state = RXDATA;
|
m_rx_baudcounter =m_baud_counts+m_baud_counts/2;
|
m_rx_baudcounter =m_baud_counts+m_baud_counts/2-1;
|
m_rx_baudcounter -= m_rx_changectr;
|
m_rx_baudcounter -= m_rx_changectr;
|
m_rx_busy = 0;
|
m_rx_busy = 0;
|
m_rx_data = 0;
|
m_rx_data = 0;
|
}
|
}
|
} else if (m_rx_baudcounter <= 0) {
|
} else if (m_rx_baudcounter <= 0) {
|
| Line 277... |
Line 277... |
// bit N-1
|
// bit N-1
|
// (possible parity bit)
|
// (possible parity bit)
|
// stop bit
|
// stop bit
|
// (possible secondary stop bit)
|
// (possible secondary stop bit)
|
m_rx_data = ((i_tx&1)<<31) | (m_rx_data>>1);
|
m_rx_data = ((i_tx&1)<<31) | (m_rx_data>>1);
|
} m_rx_baudcounter = m_baud_counts;
|
} m_rx_baudcounter = m_baud_counts-1;
|
} else
|
} else
|
m_rx_baudcounter--;
|
m_rx_baudcounter--;
|
|
|
if ((m_tx_state == TXIDLE)&&(m_conrd >= 0)) {
|
if ((m_tx_state == TXIDLE)&&(m_conrd >= 0)) {
|
struct pollfd pb;
|
struct pollfd pb;
|
| Line 314... |
Line 314... |
m_tx_data |= (p<<(m_nbits+m_nparity));
|
m_tx_data |= (p<<(m_nbits+m_nparity));
|
}
|
}
|
m_tx_busy = (1<<(m_nbits+m_nparity+m_nstop+1))-1;
|
m_tx_busy = (1<<(m_nbits+m_nparity+m_nstop+1))-1;
|
m_tx_state = TXDATA;
|
m_tx_state = TXDATA;
|
o_rx = 0;
|
o_rx = 0;
|
m_tx_baudcounter = m_baud_counts;
|
m_tx_baudcounter = m_baud_counts-1;
|
} else if (nr < 0) {
|
} else if (nr < 0) {
|
fprintf(stderr, "ERR while attempting to read in--closing input port\n");
|
fprintf(stderr, "ERR while attempting to read in--closing input port\n");
|
perror("UARTSIM::read() ");
|
perror("UARTSIM::read() ");
|
m_conrd = -1;
|
m_conrd = -1;
|
} // and we really don't care if nr == 0 except that
|
} // and we really don't care if nr == 0 except that
|
| Line 328... |
Line 328... |
m_tx_data >>= 1;
|
m_tx_data >>= 1;
|
m_tx_busy >>= 1;
|
m_tx_busy >>= 1;
|
if (!m_tx_busy)
|
if (!m_tx_busy)
|
m_tx_state = TXIDLE;
|
m_tx_state = TXIDLE;
|
else
|
else
|
m_tx_baudcounter = m_baud_counts;
|
m_tx_baudcounter = m_baud_counts-1;
|
o_rx = m_tx_data&1;
|
o_rx = m_tx_data&1;
|
} else {
|
} else {
|
m_tx_baudcounter--;
|
m_tx_baudcounter--;
|
o_rx = m_tx_data&1;
|
o_rx = m_tx_data&1;
|
}
|
}
|
