def _controlTransfer(self, request_type, request, value, index, data,
length, timeout):
result = libusb1.libusb_control_transfer(self.__handle, request_type,
request, value, index, data, length, timeout)
if result < 0:
raise libusb1.USBError(result)
return result
def write_command(self, request, data_ptr, length):
"""
fonction qui envoie une commande de controle vers USB2
:param request: signature du commande controle
:param data_ptr: data du commande controle
:param length: taille de data_ptr
:return:
"""
typerequest = self.LIBUSB_RECIPIENT_DEVICE | self.LIBUSB_REQUEST_TYPE_VENDOR | self.LIBUSB_ENDPOINT_OUT
value = 0
index = 0
if (length == 0):
dat = '\x00'
dbg = libusb1.libusb_control_transfer(self.handle, typerequest, request, value, index, dat, 1, self.TIMEOUT)
assert dbg == 1
else:
dbg = libusb1.libusb_control_transfer(self.handle, typerequest, request, value, index, data_ptr, length,
self.TIMEOUT)
assert dbg == length
def cp2130_libusb_set_usb_config(handle):
buf = c_ubyte * 10
control_buf_out = buf(0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x80)
usbTimeout = 500
error_code = libusb1.libusb_control_transfer(handle, 0x40, 0x61, 0xA5F1,
0x000A, control_buf_out,
sizeof(control_buf_out),
usbTimeout)
if error_code != sizeof(control_buf_out):
print('Error in bulk transfer')
return False
return True
def cp2130_libusb_get_rtr_state(handle):
buf = c_ubyte * 1
control_buf_in = buf()
usbTimeout = 500
error_code = libusb1.libusb_control_transfer(handle, 0xC0, 0x36, 0x0000,
0x0000, control_buf_in,
sizeof(control_buf_in),
usbTimeout)
if error_code != sizeof(control_buf_in):
print('Error in bulk transfer')
return False
return True
def cp2130_libusb_set_spi_word(handle):
buf = c_ubyte * 2
control_buf_out = buf(0x00, 0x09)
usbTimeout = 500
error_code = libusb1.libusb_control_transfer(handle, 0x40, 0x31, 0x0000,
0x0000, control_buf_out,
sizeof(control_buf_out),
usbTimeout)
if error_code != sizeof(control_buf_out):
print('Error in bulk transfer')
return False
return True
def cp2130_libusb_set_usb_config(handle):
buf = c_ubyte * 10
control_buf_out = buf(0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x80)
usbTimeout = 500
error_code = libusb1.libusb_control_transfer(handle, 0x40, 0x61, 0xA5F1,
0x000A, control_buf_out,
sizeof(control_buf_out),
usbTimeout)
if error_code != sizeof(control_buf_out):
print('Error in bulk transfer')
return False
# print('Successfully set value of spi_word on chip:')
# for i in control_buf_out:
# print(i)
return True