def _setup_session(self, config):
if len(config.sensor) > 1:
raise ValueError("the register protocol does not support multiple sensors")
if config.sensor[0] != 1:
raise ValueError("the register protocol currently only supports using sensor 1")
mode = protocol.get_mode(config.mode)
self._mode = mode
self._experimental_stitching = bool(config.experimental_stitching)
sweep_rate = None if config.experimental_stitching else config.sweep_rate
self.__cmd_proc("set_mode_and_rate", mode, sweep_rate)
self._write_reg("main_control", "stop")
self._write_reg("mode_selection", mode)
if config.experimental_stitching:
self._write_reg("repetition_mode", "max")
log.warning("experimental stitching on - switching to max freq. mode")
else:
self._write_reg("repetition_mode", "fixed")
self._write_reg("streaming_control", "disable")
self._write_reg("sensor_power_mode", "d")
if mode == "iq":
self._write_reg("output_data_compression", 1)
rvs = utils.get_reg_vals_for_config(config)
for rv in rvs:
self._write_reg_raw(rv.addr, rv.val)
self._write_reg("main_control", "create")
sleep(SPI_MAIN_CTRL_SLEEP)
status = self._read_reg("status")
if status & protocol.STATUS_ERROR_ON_SERVICE_CREATION_MASK:
raise ClientError("session setup failed")
info = {}
info_regs = utils.get_session_info_regs(mode)
for reg in info_regs:
info[reg.name] = self._read_reg(reg)
self._num_subsweeps = info.get("number_of_subsweeps")
# data rate check
data_length = info.get("data_length")
freq = info.get("frequency")
bpp = protocol.BYTE_PER_POINT.get(mode)
if data_length:
log.debug("assumed data length: {}".format(data_length))
if bpp and freq and not config.experimental_stitching:
data_rate = 8 * bpp * data_length * freq
log_text = "data rate: {:.2f} Mbit/s".format(data_rate*1e-6)
log.info(log_text)
return info
def _setup_session(self, config):
if len(config.sensor) > 1:
raise ValueError("the register protocol does not support multiple sensors")
if config.sensor[0] != 1:
raise ValueError("the register protocol currently only supports using sensor 1")
mode = protocol.get_mode(config.mode)
self._mode = mode
self._write_reg("main_control", "stop")
self._write_reg("mode_selection", mode)
self._write_reg("repetition_mode", "fixed")
self._write_reg("streaming_control", "uart")
if mode == "iq":
self._write_reg("output_data_compression", 1)
rvs = utils.get_reg_vals_for_config(config)
for rv in rvs:
self._write_reg_raw(rv.addr, rv.val)
self._write_reg("main_control", "create")
info = {}
info_regs = utils.get_session_info_regs(mode)
for reg in info_regs:
info[reg.name] = self._read_reg(reg, mode)
# data rate check
data_length = info.get("data_length")
freq = info.get("frequency")
bpp = protocol.BYTE_PER_POINT.get(mode)
if data_length:
log.debug("data length: {}".format(data_length))
if bpp and freq:
data_rate = 8 * bpp * data_length * freq
log_text = "data rate: {:.2f} Mbit/s".format(data_rate*1e-6)
if data_rate > 2/3 * self._link.baudrate:
log.warn(log_text)
log.warn("data rate might be too high")
else:
log.info(log_text)
return info