ftdi.c - description
-------------------
begin : Fri Apr 4 2003
- copyright : (C) 2003-2014 by Intra2net AG and the libftdi developers
+ copyright : (C) 2003-2017 by Intra2net AG and the libftdi developers
email : opensource@intra2net.com
***************************************************************************/
\mainpage libftdi API documentation
Library to talk to FTDI chips. You find the latest versions of libftdi at
- http://www.intra2net.com/en/developer/libftdi/
+ https://www.intra2net.com/en/developer/libftdi/
The library is easy to use. Have a look at this short example:
\include simple.c
\retval -9: get serial number failed
\retval -10: unable to close device
\retval -11: ftdi context invalid
+ \retval -12: libusb_get_device_list() failed
*/
int ftdi_usb_open_desc_index(struct ftdi_context *ftdi, int vendor, int product,
const char* description, const char* serial, unsigned int index)
}
/**
+ Opens the device at a given USB bus and device address.
+
+ \param ftdi pointer to ftdi_context
+ \param bus Bus number
+ \param addr Device address
+
+ \retval 0: all fine
+ \retval -1: usb_find_busses() failed
+ \retval -2: usb_find_devices() failed
+ \retval -3: usb device not found
+ \retval -4: unable to open device
+ \retval -5: unable to claim device
+ \retval -6: reset failed
+ \retval -7: set baudrate failed
+ \retval -8: get product description failed
+ \retval -9: get serial number failed
+ \retval -10: unable to close device
+ \retval -11: ftdi context invalid
+ \retval -12: libusb_get_device_list() failed
+*/
+int ftdi_usb_open_bus_addr(struct ftdi_context *ftdi, uint8_t bus, uint8_t addr)
+{
+ libusb_device *dev;
+ libusb_device **devs;
+ int i = 0;
+
+ if (ftdi == NULL)
+ ftdi_error_return(-11, "ftdi context invalid");
+
+ if (libusb_get_device_list(ftdi->usb_ctx, &devs) < 0)
+ ftdi_error_return(-12, "libusb_get_device_list() failed");
+
+ while ((dev = devs[i++]) != NULL)
+ {
+ if (libusb_get_bus_number(dev) == bus && libusb_get_device_address(dev) == addr)
+ {
+ int res;
+ res = ftdi_usb_open_dev(ftdi, dev);
+ libusb_free_device_list(devs,1);
+ return res;
+ }
+ }
+
+ // device not found
+ ftdi_error_return_free_device_list(-3, "device not found", devs);
+}
+
+/**
Opens the ftdi-device described by a description-string.
Intended to be used for parsing a device-description given as commandline argument.