void phDal4Nfc_uart_flush(void)
{
int ret;
/* flushes the com port */
ret = tcflush(gComPortContext.nHandle, TCIFLUSH);
DAL_ASSERT_STR(ret!=-1, "tcflush failed");
}
int phDal4Nfc_uart_write(uint8_t * pBuffer, int nNbBytesToWrite)
{
fd_set wfds;
struct timeval tv;
int ret;
DAL_ASSERT_STR(gComPortContext.nOpened == 1, "write called but not opened!");
FD_ZERO(&wfds);
FD_SET(gComPortContext.nHandle, &wfds);
/* select will block for 10 sec */
tv.tv_sec = 2;
tv.tv_usec = 0;
ret = select(gComPortContext.nHandle + 1, NULL, &wfds, NULL, &tv);
if (ret == -1)
return -1;
if (ret)
return write(gComPortContext.nHandle, pBuffer, nNbBytesToWrite);
return 0;
}
int phDal4Nfc_uart_write(uint8_t * pBuffer, int nNbBytesToWrite)
{
int ret;
int numWrote = 0;
DAL_ASSERT_STR(gComPortContext.nOpened == 1, "write called but not opened!");
DAL_DEBUG("_uart_write() called to write %d bytes\n", nNbBytesToWrite);
/* Samsung modify for TIZEN */
#if 0
while (numWrote < nNbBytesToWrite) {
ret = write(gComPortContext.nHandle, pBuffer + numWrote, nNbBytesToWrite - numWrote);
if (ret > 0) {
DAL_DEBUG("wrote %d bytes", ret);
numWrote += ret;
} else if (ret == 0) {
DAL_PRINT("_uart_write() EOF");
return -1;
} else {
DAL_DEBUG("_uart_write() errno=%d", errno);
if (errno == EINTR || errno == EAGAIN) {
continue;
}
return -1;
}
}
#endif
return numWrote;
}
int phDal4Nfc_uart_write(uint8_t * pBuffer, int nNbBytesToWrite)
{
int ret;
int numWrote = 0;
DAL_ASSERT_STR(gComPortContext.nOpened == 1, "write called but not opened!");
DAL_DEBUG("_uart_write() called to write %d bytes\n", nNbBytesToWrite);
#ifdef SWISSKNIFEVERSION
if(nNbBytesToWrite > 4) {
last_ns = pBuffer[1] & 0x07;
last_nr = (pBuffer[1] & 0x38) >> 3;
}
void phDal4Nfc_uart_set_open_from_handle(phHal_sHwReference_t * pDalHwContext)
{
gComPortContext.nHandle = (int) pDalHwContext->p_board_driver;
DAL_ASSERT_STR(gComPortContext.nHandle >= 0, "Bad passed com port handle");
gComPortContext.nOpened = 1;
}
NFCSTATUS phDal4Nfc_uart_open_and_configure(pphDal4Nfc_sConfig_t pConfig, void ** pLinkHandle)
{
char * pComPort;
int nComStatus;
NFCSTATUS nfcret = NFCSTATUS_SUCCESS;
int ret;
DAL_ASSERT_STR(gComPortContext.nOpened==0, "Trying to open but already done!");
switch(pConfig->nLinkType)
{
case ENUM_DAL_LINK_TYPE_COM1:
pComPort = "/dev/ttyS0";
break;
case ENUM_DAL_LINK_TYPE_COM2:
pComPort = "/dev/ttyS1";
break;
case ENUM_DAL_LINK_TYPE_COM3:
pComPort = "/dev/ttyS2";
break;
case ENUM_DAL_LINK_TYPE_COM4:
pComPort = "/dev/ttyS3";
break;
case ENUM_DAL_LINK_TYPE_COM5:
pComPort = "/dev/ttyS4";
break;
case ENUM_DAL_LINK_TYPE_COM6:
pComPort = "/dev/ttyS5";
break;
case ENUM_DAL_LINK_TYPE_COM7:
pComPort = "/dev/ttyS6";
break;
case ENUM_DAL_LINK_TYPE_COM8:
pComPort = "/dev/ttyS7";
break;
case ENUM_DAL_LINK_TYPE_USB:
pComPort = "/dev/ttyUSB0";
break;
default:
return NFCSTATUS_INVALID_PARAMETER;
}
/* open communication port handle */
gComPortContext.nHandle = open(pComPort, O_RDWR | O_NOCTTY);
if (gComPortContext.nHandle < 0)
{
*pLinkHandle = NULL;
return PHNFCSTVAL(CID_NFC_DAL, NFCSTATUS_INVALID_DEVICE);
}
gComPortContext.nOpened = 1;
*pLinkHandle = (void*)gComPortContext.nHandle;
/*
* Now configure the com port
*/
ret = tcgetattr(gComPortContext.nHandle, &gComPortContext.nIoConfigBackup); /* save the old io config */
if (ret == -1)
{
/* tcgetattr failed -- it is likely that the provided port is invalid */
*pLinkHandle = NULL;
return PHNFCSTVAL(CID_NFC_DAL, NFCSTATUS_INVALID_DEVICE);
}
ret = fcntl(gComPortContext.nHandle, F_SETFL, 0); /* Makes the read blocking (default). */
DAL_ASSERT_STR(ret != -1, "fcntl failed");
/* Configures the io */
memset((void *)&gComPortContext.nIoConfig, (int)0, (size_t)sizeof(struct termios));
/*
BAUDRATE: Set bps rate. You could also use cfsetispeed and cfsetospeed.
CRTSCTS : output hardware flow control (only used if the cable has
all necessary lines. See sect. 7 of Serial-HOWTO)
CS8 : 8n1 (8bit,no parity,1 stopbit)
CLOCAL : local connection, no modem contol
CREAD : enable receiving characters
*/
gComPortContext.nIoConfig.c_cflag = DAL_BAUD_RATE | CS8 | CLOCAL | CREAD; /* Control mode flags */
gComPortContext.nIoConfig.c_iflag = IGNPAR; /* Input mode flags : IGNPAR Ignore parity errors */
gComPortContext.nIoConfig.c_oflag = 0; /* Output mode flags */
gComPortContext.nIoConfig.c_lflag = 0; /* Local mode flags. Read mode : non canonical, no echo */
gComPortContext.nIoConfig.c_cc[VTIME] = 0; /* Control characters. No inter-character timer */
gComPortContext.nIoConfig.c_cc[VMIN] = 1; /* Control characters. Read is blocking until X characters are read */
/*
TCSANOW Make changes now without waiting for data to complete
TCSADRAIN Wait until everything has been transmitted
TCSAFLUSH Flush input and output buffers and make the change
*/
ret = tcsetattr(gComPortContext.nHandle, TCSANOW, &gComPortContext.nIoConfig);
DAL_ASSERT_STR(ret != -1, "tcsetattr failed");
/*
On linux the DTR signal is set by default. That causes a problem for pn544 chip
because this signal is connected to "reset". So we clear it. (on windows it is cleared by default).
*/
ret = ioctl(gComPortContext.nHandle, TIOCMGET, &nComStatus);
DAL_ASSERT_STR(ret != -1, "ioctl TIOCMGET failed");
nComStatus &= ~TIOCM_DTR;
ret = ioctl(gComPortContext.nHandle, TIOCMSET, &nComStatus);
DAL_ASSERT_STR(ret != -1, "ioctl TIOCMSET failed");
DAL_DEBUG("Com port status=%d\n", nComStatus);
usleep(10000); /* Mandatory sleep so that the DTR line is ready before continuing */
return nfcret;
}
/*-----------------------------------------------------------------------------
FUNCTION: phDal4Nfc_uart_read
PURPOSE: Reads nNbBytesToRead bytes and writes them in pBuffer.
Returns the number of bytes really read or -1 in case of error.
-----------------------------------------------------------------------------*/
int phDal4Nfc_uart_read(uint8_t * pBuffer, int nNbBytesToRead)
{
int ret;
int numRead = 0;
struct timeval tv;
struct timeval *ptv;
struct timespec timeout;
fd_set rfds;
DAL_ASSERT_STR(gComPortContext.nOpened == 1, "read called but not opened!");
DAL_DEBUG("_uart_read() called to read %d bytes", nNbBytesToRead);
/* Samsung modify for TIZEN */
#if 0
// read_property();
// Read timeout:
// FW mode: 10s timeout
// 1 byte read: steady-state LLC length read, allowed to block forever
// >1 byte read: LLC payload, 100ms timeout (before pn544 re-transmit)
if (nNbBytesToRead > 1 && !libnfc_firmware_mode) {
clock_gettime(CLOCK_MONOTONIC, &timeout);
timeout.tv_nsec += 100000000;
if (timeout.tv_nsec > 1000000000) {
timeout.tv_sec++;
timeout.tv_nsec -= 1000000000;
}
ptv = &tv;
} else if (libnfc_firmware_mode) {
clock_gettime(CLOCK_MONOTONIC, &timeout);
timeout.tv_sec += 10;
ptv = &tv;
} else {
ptv = NULL;
}
while (numRead < nNbBytesToRead) {
FD_ZERO(&rfds);
FD_SET(gComPortContext.nHandle, &rfds);
if (ptv) {
tv = timeval_remaining(timeout);
ptv = &tv;
}
ret = select(gComPortContext.nHandle + 1, &rfds, NULL, NULL, ptv);
if (ret < 0) {
DAL_DEBUG("select() errno=%d", errno);
if (errno == EINTR || errno == EAGAIN) {
continue;
}
return -1;
} else if (ret == 0) {
LOGW("timeout!");
break; // return partial response
}
ret = read(gComPortContext.nHandle, pBuffer + numRead, nNbBytesToRead - numRead);
if (ret > 0) {
ret = apply_errors(pBuffer + numRead, ret);
DAL_DEBUG("read %d bytes", ret);
numRead += ret;
} else if (ret == 0) {
DAL_PRINT("_uart_read() EOF");
return 0;
} else {
DAL_DEBUG("_uart_read() errno=%d", errno);
if (errno == EINTR || errno == EAGAIN) {
continue;
}
return -1;
}
}
#endif
return numRead;
}
/*-----------------------------------------------------------------------------
FUNCTION: phDal4Nfc_uart_read
PURPOSE: Reads nNbBytesToRead bytes and writes them in pBuffer.
Returns the number of bytes really read or -1 in case of error.
-----------------------------------------------------------------------------*/
int phDal4Nfc_uart_read(uint8_t * pBuffer, int nNbBytesToRead)
{
int ret;
int numRead = 0;
struct timeval tv;
struct timeval *ptv;
struct timespec timeout;
fd_set rfds;
#ifdef SWISSKNIFEVERSION
struct timespec time,time2;
clock_gettime(CLOCK_MONOTONIC, &time);
#endif
DAL_ASSERT_STR(gComPortContext.nOpened == 1, "read called but not opened!");
DAL_DEBUG("_uart_read() called to read %d bytes", nNbBytesToRead);
read_property();
// Read timeout:
// FW mode: 10s timeout
// 1 byte read: steady-state LLC length read, allowed to block forever
// >1 byte read: LLC payload, 100ms timeout (before pn544 re-transmit)
if (nNbBytesToRead > 1 && !libnfc_firmware_mode) {
clock_gettime(CLOCK_MONOTONIC, &timeout);
timeout.tv_nsec += 100000000;
if (timeout.tv_nsec > 1000000000) {
timeout.tv_sec++;
timeout.tv_nsec -= 1000000000;
}
ptv = &tv;
} else if (libnfc_firmware_mode) {
clock_gettime(CLOCK_MONOTONIC, &timeout);
timeout.tv_sec += 10;
ptv = &tv;
} else {
ptv = NULL;
}
while (numRead < nNbBytesToRead) {
FD_ZERO(&rfds);
FD_SET(gComPortContext.nHandle, &rfds);
if (ptv) {
tv = timeval_remaining(timeout);
ptv = &tv;
}
ret = select(gComPortContext.nHandle + 1, &rfds, NULL, NULL, ptv);
if (ret < 0) {
DAL_DEBUG("select() errno=%d", errno);
if (errno == EINTR || errno == EAGAIN) {
continue;
}
return -1;
} else if (ret == 0) {
ALOGW("timeout!");
break; // return partial response
}
ret = read(gComPortContext.nHandle, pBuffer + numRead, nNbBytesToRead - numRead);
if (ret > 0) {
// ret = apply_errors(pBuffer + numRead, ret);
DAL_DEBUG("read %d bytes", ret);
numRead += ret;
} else if (ret == 0) {
DAL_PRINT("_uart_read() EOF");
return 0;
} else {
DAL_DEBUG("_uart_read() errno=%d", errno);
if (errno == EINTR || errno == EAGAIN) {
continue;
}
return -1;
}
}
#ifdef SWISSKNIFEVERSION
clock_gettime(CLOCK_MONOTONIC, &time2);
#ifdef LOGSWISSKNIFE
SwissKnife_Log(pBuffer,nNbBytesToRead,"Receiving message:");
#endif
if(rapidBitExchange && receivedMessages < 32) {
if(nNbBytesToRead == 1) {
if(pBuffer[0] == 0x03) {
msg3[receivedMessages] = (time2.tv_sec*1000000000)+time2.tv_nsec;
}
else if (pBuffer[0] == 0x07) {
msgsize[receivedMessages] = (time2.tv_sec*1000000000)+time2.tv_nsec;
}
} else if(nNbBytesToRead == 7) {
data[receivedMessages] = (time2.tv_sec*1000000000)+time2.tv_nsec;
}
}
#endif
return numRead;
}
