cell ft_open_serial (cell devidx, cell pid)
{
ft_handle fh = ftdi_new();
ft_errno = ftdi_usb_open_desc_index(fh, 0x0403, pid, NULL, NULL, devidx);
if (ft_errno) {
return (cell)NULL;
}
ftdi_set_baudrate(fh, 115200);
ftdi_set_line_property(fh, BITS_8, STOP_BIT_1, NONE);
ftdi_setflowctrl(fh, SIO_DISABLE_FLOW_CTRL);
ftdi_set_latency_timer(fh, 1);
com_ops_t *ops = malloc(sizeof(com_ops_t));
ops->handle = (cell)fh;
ops->close = ft_close;
ops->get_modem_control = ft_get_modem_control;
ops->set_modem_control = ft_set_modem_control;
ops->set_baud = ft_set_baud;
ops->set_parity = ft_set_parity;
ops->write = ft_write;
ops->timed_read = ft_timed_read;
return (cell)ops;
}
int Context::open(int vendor, int product, const std::string& description, const std::string& serial, unsigned int index)
{
// translate empty strings to NULL
// -> do not use them to find the device (vs. require an empty string to be set in the EEPROM)
const char* c_description=NULL;
const char* c_serial=NULL;
if (!description.empty())
c_description=description.c_str();
if (!serial.empty())
c_serial=serial.c_str();
int ret = ftdi_usb_open_desc_index(d->ftdi, vendor, product, c_description, c_serial, index);
if (ret < 0)
return ret;
return get_strings_and_reopen();
}
static int ft245r_open(PROGRAMMER * pgm, char * port) {
int rv;
int devnum = -1;
rv = pins_check(pgm,pin_checklist,sizeof(pin_checklist)/sizeof(pin_checklist[0]), true);
if(rv) {
pgm->display(pgm, progbuf);
return rv;
}
strcpy(pgm->port, port);
if (strcmp(port,DEFAULT_USB) != 0) {
if (strncasecmp("ft", port, 2) == 0) {
char *startptr = port + 2;
char *endptr = NULL;
devnum = strtol(startptr,&endptr,10);
if ((startptr==endptr) || (*endptr != '\0')) {
devnum = -1;
}
}
if (devnum < 0) {
avrdude_message(MSG_INFO, "%s: invalid portname '%s': use 'ft[0-9]+'\n",
progname,port);
return -1;
}
} else {
devnum = 0;
}
handle = malloc (sizeof (struct ftdi_context));
ftdi_init(handle);
LNODEID usbpid = lfirst(pgm->usbpid);
int pid;
if (usbpid) {
pid = *(int *)(ldata(usbpid));
if (lnext(usbpid))
avrdude_message(MSG_INFO, "%s: Warning: using PID 0x%04x, ignoring remaining PIDs in list\n",
progname, pid);
} else {
pid = USB_DEVICE_FT245;
}
rv = ftdi_usb_open_desc_index(handle,
pgm->usbvid?pgm->usbvid:USB_VENDOR_FTDI,
pid,
pgm->usbproduct[0]?pgm->usbproduct:NULL,
pgm->usbsn[0]?pgm->usbsn:NULL,
devnum);
if (rv) {
avrdude_message(MSG_INFO, "can't open ftdi device %d. (%s)\n", devnum, ftdi_get_error_string(handle));
goto cleanup_no_usb;
}
ft245r_ddr =
pgm->pin[PIN_AVR_SCK].mask[0]
| pgm->pin[PIN_AVR_MOSI].mask[0]
| pgm->pin[PIN_AVR_RESET].mask[0]
| pgm->pin[PPI_AVR_BUFF].mask[0]
| pgm->pin[PPI_AVR_VCC].mask[0]
| pgm->pin[PIN_LED_ERR].mask[0]
| pgm->pin[PIN_LED_RDY].mask[0]
| pgm->pin[PIN_LED_PGM].mask[0]
| pgm->pin[PIN_LED_VFY].mask[0];
/* set initial values for outputs, no reset everything else is off */
ft245r_out = 0;
ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_AVR_RESET,1);
ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_AVR_SCK,0);
ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_AVR_MOSI,0);
ft245r_out = SET_BITS_0(ft245r_out,pgm,PPI_AVR_BUFF,0);
ft245r_out = SET_BITS_0(ft245r_out,pgm,PPI_AVR_VCC,0);
ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_LED_ERR,0);
ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_LED_RDY,0);
ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_LED_PGM,0);
ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_LED_VFY,0);
rv = ftdi_set_bitmode(handle, ft245r_ddr, BITMODE_SYNCBB); // set Synchronous BitBang
if (rv) {
avrdude_message(MSG_INFO, "%s: Synchronous BitBangMode is not supported (%s)\n",
progname, ftdi_get_error_string(handle));
goto cleanup;
}
rv = ft245r_set_bitclock(pgm);
if (rv) {
goto cleanup;
}
/* We start a new thread to read the output from the FTDI. This is
* necessary because otherwise we'll deadlock. We cannot finish
* writing because the ftdi cannot send the results because we
* haven't provided a read buffer yet. */
sem_init (&buf_data, 0, 0);
sem_init (&buf_space, 0, BUFSIZE);
pthread_create (&readerthread, NULL, reader, handle);
/*
* drain any extraneous input
*/
ft245r_drain (pgm, 0);
ft245r_send (pgm, &ft245r_out, 1);
ft245r_recv (pgm, &ft245r_in, 1);
return 0;
cleanup:
ftdi_usb_close(handle);
cleanup_no_usb:
ftdi_deinit (handle);
free(handle);
handle = NULL;
return -1;
}
int CKMotionIO::Connect()
{
char reason[256];
int ftStatus;
if (NonRespondingCount==CONNECT_TRIES) return 1;
m_SaveChars[0]=0; // start anew
Mutex->Lock();
if (!RequestedDeviceAvail(reason))
{
ErrorMessageBox(reason);
Mutex->Unlock();
return 1;
}
#define TIME_TO_TRY_TO_OPEN 3000
// FT_ListDevices OK, number of devices connected is in numDevs
// usually during boot the board comes and goes, since it appeared
// to be there, try for a while to open it
DWORD t0=timeGetTime();
for (;;)
{
ftStatus = ftdi_usb_open_desc_index(ftdi, VENDOR, PRODUCT, NULL, NULL, USB_Loc_ID);
if (ftStatus < FT_OK)
{
log_info("ftdi_usb_open_desc_index failed: %d (%s)", ftStatus, ftdi_get_error_string(ftdi));
// FT_Open failed
if (timeGetTime()-t0 > TIME_TO_TRY_TO_OPEN)
{
ErrorMessageBox("Unable to open KMotion device");
Mutex->Unlock();
return 1;
}
Sleep(100); // delay a bit then loop back and try again
}
else
{
// FT_Open OK, use ftHandle to access device
if (SetLatency(2))
{
//Close handle
if(_ftdi_usb_close(ftdi) < FT_OK){
log_info("_ftdi_usb_close failed: %d (%s)", ftStatus, ftdi_get_error_string(ftdi));
}
Mutex->Unlock();
return 1;
}
if (FlushInputBuffer())
{
log_info("FAIL: FlushInputBuffer for device %d",USB_Loc_ID);
//This is the key to why it works on second attempt
//After usb_close has executed once the device works forever.
//The ftdi device is not closed when killing the KMotionServer
//Try to recover from this action when initialising this class.
if(_ftdi_usb_close(ftdi) < FT_OK){
log_info("_ftdi_usb_close failed: %d (%s)", ftStatus, ftdi_get_error_string(ftdi));
}
Mutex->Unlock();
return 1;
}
m_Connected=true; // All set
Mutex->Unlock();
return 0;
}
}
Mutex->Unlock();
return 0;
}