Bulk Methods¶

Send Buffer¶

int FX3USB3Connection::send_buffer(unsigned char *buf, int sz, unsigned int end_ptr = 0x01)¶

Description

Sends the data stored on ‘buf’ of size ‘sz’ to the cypress device

Receives

unsigned char *buf: pointer to a buffer where the data to be sent is stored
unsigned int data_count: Size of data to be sent
(Optional) unsigned int end_ptr: endpoint number where to send the data (default 0x01)

Returns

0 on success (and populates transferred)
LIBUSB_ERROR_TIMEOUT if the transfer timed out (and populates transferred)
LIBUSB_ERROR_PIPE if the endpoint halted
LIBUSB_ERROR_OVERFLOW if the device offered more data, see Packets and overflows
LIBUSB_ERROR_NO_DEVICE if the device has been disconnected
another LIBUSB_ERROR code on other failures

int FX3USB3Connection::receive_buffer(unsigned char *buf, unsigned int data_count, unsigned int end_ptr = 0x81)

Description

Reads data from endpoint 0x81 (default) to buf and returns

Receives

unsigned char *buf: pointer to a buffer where the readed data will be stored
unsigned int data_count: Size of expected amount of bytes to read
(Optional) unsigned int end_ptr: endpoint number where to read the data (default 0x81)

Returns

Lenght of data readed the size of data read (should be same as data_count)

Description

Uses send and receive buffer functions to send a text file and reads same size response It then checks the readed data is the same as the data sended

Receives