crewID/libnfc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Define macro to cast to serial_port_unix.

Browse source
This commit is contained in:
Audrey Diacre 2011-11-24 10:20:36 +00:00
parent c718fafee7
commit 322eec6fb1
1 changed files with 17 additions and 19 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

34
libnfc/buses/uart_posix.c
View file

@ -67,7 +67,7 @@ struct serial_port_unix{
struct termios termios_new; // Terminal info during the transaction
};
// TODO: #define UART_FD( X ) (((struct serial_port_unix *) X)->fd)
#define UART_DATA( X ) ((struct serial_port_unix *) X)
void uart_close_ext (const serial_port sp, const bool restore_termios);
@ -116,12 +116,12 @@ void
uart_flush_input (serial_port sp)
{
// This line seems to produce absolutely no effect on my system (GNU/Linux 2.6.35)
tcflush (((struct serial_port_unix *) sp)->fd, TCIFLUSH);
tcflush (UART_DATA(sp)->fd, TCIFLUSH);
// So, I wrote this byte-eater
// Retrieve the count of the incoming bytes
int available_bytes_count = 0;
int res;
res = ioctl (((struct serial_port_unix *) sp)->fd, FIONREAD, &available_bytes_count);
res = ioctl (UART_DATA(sp)->fd, FIONREAD, &available_bytes_count);
if (res != 0) {
return;
}
@ -130,7 +130,7 @@ uart_flush_input (serial_port sp)
}
char* rx = malloc (available_bytes_count);
// There is something available, read the data
res = read (((struct serial_port_unix *) sp)->fd, rx, available_bytes_count);
res = read (UART_DATA(sp)->fd, rx, available_bytes_count);
log_put (LOG_CATEGORY, NFC_PRIORITY_TRACE, "%d bytes have eatten.", available_bytes_count);
free (rx);
}
@ -139,7 +139,6 @@ void
uart_set_speed (serial_port sp, const uint32_t uiPortSpeed)
{
log_put (LOG_CATEGORY, NFC_PRIORITY_TRACE, "Serial port speed requested to be set to %d bauds.", uiPortSpeed);
struct serial_port_unix *spu = (struct serial_port_unix *) sp;
// Portability note: on some systems, B9600 != 9600 so we have to do
// uint32_t <=> speed_t associations by hand.
@ -181,9 +180,9 @@ uart_set_speed (serial_port sp, const uint32_t uiPortSpeed)
};
// Set port speed (Input and Output)
cfsetispeed (&(spu->termios_new), stPortSpeed);
cfsetospeed (&(spu->termios_new), stPortSpeed);
if (tcsetattr (spu->fd, TCSADRAIN, &(spu->termios_new)) == -1) {
cfsetispeed (&(UART_DATA(sp)->termios_new), stPortSpeed);
cfsetospeed (&(UART_DATA(sp)->termios_new), stPortSpeed);
if (tcsetattr (UART_DATA(sp)->fd, TCSADRAIN, &(UART_DATA(sp)->termios_new)) == -1) {
log_put (LOG_CATEGORY, NFC_PRIORITY_ERROR, "%s", "Unable to apply new speed settings.");
}
}
@ -192,8 +191,7 @@ uint32_t
uart_get_speed (serial_port sp)
{
uint32_t uiPortSpeed = 0;
const struct serial_port_unix *spu = (struct serial_port_unix *) sp;
switch (cfgetispeed (&spu->termios_new)) {
switch (cfgetispeed (&UART_DATA(sp)->termios_new)) {
case B9600:
uiPortSpeed = 9600;
break;
@ -231,10 +229,10 @@ uart_get_speed (serial_port sp)
void
uart_close_ext (const serial_port sp, const bool restore_termios)
{
if (((struct serial_port_unix *) sp)->fd >= 0) {
if (UART_DATA(sp)->fd >= 0) {
if (restore_termios)
tcsetattr (((struct serial_port_unix *) sp)->fd, TCSANOW, &((struct serial_port_unix *) sp)->termios_backup);
close (((struct serial_port_unix *) sp)->fd);
tcsetattr (UART_DATA(sp)->fd, TCSANOW, &UART_DATA(sp)->termios_backup);
close (UART_DATA(sp)->fd);
}
free (sp);
}
@ -263,7 +261,7 @@ uart_receive (serial_port sp, byte_t * pbtRx, const size_t szRx, void * abort_p,
select:
// Reset file descriptor
FD_ZERO (&rfds);
FD_SET (((struct serial_port_unix *) sp)->fd, &rfds);
FD_SET (UART_DATA(sp)->fd, &rfds);
if (iAbortFd) {
FD_SET (iAbortFd, &rfds);
@ -279,7 +277,7 @@ select:
timeout = &fixed_timeout;
}
res = select (MAX(((struct serial_port_unix *) sp)->fd, iAbortFd) + 1, &rfds, NULL, NULL, timeout);
res = select (MAX(UART_DATA(sp)->fd, iAbortFd) + 1, &rfds, NULL, NULL, timeout);
if ((res < 0) && (EINTR == errno)) {
// The system call was interupted by a signal and a signal handler was
@ -306,12 +304,12 @@ select:
}
// Retrieve the count of the incoming bytes
res = ioctl (((struct serial_port_unix *) sp)->fd, FIONREAD, &available_bytes_count);
res = ioctl (UART_DATA(sp)->fd, FIONREAD, &available_bytes_count);
if (res != 0) {
return ECOMIO;
}
// There is something available, read the data
res = read (((struct serial_port_unix *) sp)->fd, pbtRx + received_bytes_count, MIN(available_bytes_count, (expected_bytes_count - received_bytes_count)));
res = read (UART_DATA(sp)->fd, pbtRx + received_bytes_count, MIN(available_bytes_count, (expected_bytes_count - received_bytes_count)));
// Stop if the OS has some troubles reading the data
if (res <= 0) {
return ECOMIO;
@ -333,7 +331,7 @@ uart_send (serial_port sp, const byte_t * pbtTx, const size_t szTx, struct timev
{
(void) timeout;
LOG_HEX ("TX", pbtTx, szTx);
if ((int) szTx == write (((struct serial_port_unix *) sp)->fd, pbtTx, szTx))
if ((int) szTx == write (UART_DATA(sp)->fd, pbtTx, szTx))
return 0;
else
return ECOMIO;