def expect_setup(self, epaddr, expected_data):
actual_data = []
# wait for data to appear
for i in range(128):
self.dut._log.debug("Prime loop {}".format(i))
status = yield self.read(self.csrs['usb_setup_status'])
have = status & 0x10
if have:
break
yield RisingEdge(self.dut.clk12)
for i in range(48):
self.dut._log.debug("Read loop {}".format(i))
status = yield self.read(self.csrs['usb_setup_status'])
have = status & 0x10
if not have:
break
v = yield self.read(self.csrs['usb_setup_data'])
actual_data.append(v)
yield RisingEdge(self.dut.clk12)
if len(actual_data) < 2:
raise TestFailure("data was short (got {}, expected {})".format(
expected_data, actual_data))
actual_data, actual_crc16 = actual_data[:-2], actual_data[-2:]
self.print_ep(epaddr, "Got: %r (expected: %r)", actual_data,
expected_data)
assertEqual(expected_data, actual_data, "SETUP packet not received")
assertEqual(crc16(expected_data), actual_crc16, "CRC16 not valid")
# Acknowledge that we've handled the setup packet
yield self.write(self.csrs['usb_setup_ctrl'], 2)
def expect_data(self, epaddr, expected_data, expected):
actual_data = []
# wait for data to appear
for i in range(128):
self.dut._log.debug("Prime loop {}".format(i))
status = yield self.read(self.csrs['usb_out_status'])
have = status & (1 << 4)
if have:
break
yield RisingEdge(self.dut.clk12)
for i in range(256):
self.dut._log.debug("Read loop {}".format(i))
status = yield self.read(self.csrs['usb_out_status'])
have = status & (1 << 4)
if not have:
break
v = yield self.read(self.csrs['usb_out_data'])
actual_data.append(v)
yield RisingEdge(self.dut.clk12)
if expected == PID.ACK:
if len(actual_data) < 2:
raise TestFailure("data {} was short".format(actual_data))
actual_data, actual_crc16 = actual_data[:-2], actual_data[-2:]
self.print_ep(epaddr, "Got: %r (expected: %r)", actual_data,
expected_data)
assertEqual(expected_data, actual_data,
"DATA packet not correctly received")
assertEqual(crc16(expected_data), actual_crc16, "CRC16 not valid")
pending = yield self.read(self.csrs['usb_out_ev_pending'])
if pending != 1:
raise TestFailure('event not generated')
yield self.write(self.csrs['usb_out_ev_pending'], pending)