kirdy/pykirdy/asyncio_exmaple.py

from pprint import pp
from driver.kirdy import Kirdy, FilterConfig
import signal
import time

"""
    Enter Device Firmware Upgrade(Dfu) mode
    Please see README.md for flash instructions.
"""
def enter_dfu_mode(kirdy: Kirdy):
    kirdy.device.dfu()
    kirdy.end_session()

"""
    Configure Kirdy to actively report status
    Press Ctrl + C to exit active report mode
"""
def active_report(kirdy: Kirdy):
    class SignalHandler:
        def __init__(self):
            signal.signal(signal.SIGINT, self.exit_gracefully)
            signal.signal(signal.SIGTERM, self.exit_gracefully)
        def exit_gracefully(self, signum, frame):
            kirdy.stop_report_mode()

    signal_handler = SignalHandler()

    for data in kirdy.get_report_stream():
        pp(data)

"""
    Configure Kirdy network and board specific transconductance settings.
    These configs are saved to flash immediately after command is processed. 
"""
def device_cfg(kirdy: Kirdy):
    # Kirdy rev0_3's gain and transconductance varies between boards to maximize the
    # PD current range resolution.
    kirdy.device.set_pd_mon_fin_gain(1.0)
    kirdy.device.set_pd_mon_transconductance(1/1000.0)

    # Network Settings will be updated on next reboot.
    kirdy.device.set_ip_settings(
        addr="192.168.1.128",
        port=1337,
        prefix_len=24,
        gateway="192.168.1.1"
    )
    # Hard reset Kirdy.
    kirdy.device.hard_reset()

"""
    Control and config laser diode and thermostat parameters.
"""
def ld_thermostat_cfg(kirdy: Kirdy):
    # Load the laser diode and thermostat settings from flash
    kirdy.device.restore_settings_from_flash()

    # Power off the laser diode and thermostat and clear alarm (if any)
    kirdy.laser.set_power_on(False)
    kirdy.laser.clear_alarm()
    kirdy.thermostat.set_power_on(False)
    kirdy.thermostat.clear_alarm()

    # Set the laser diode terminals not to be shorted
    kirdy.laser.set_ld_terms_short(False)

    # Do not power up the laser & thermostat during initial startup
    kirdy.laser.set_default_pwr_on(False)
    kirdy.thermostat.set_default_pwr_on(False)

    kirdy.laser.set_i(0)

    # Configure the laser diode output power limit and photodiode parameters
    # Exceeding the measured power limit triggers overpower protection alarm.
    # The laser diode power will be turned off while the thermostat power remains unchanged.
    kirdy.laser.set_ld_pwr_limit(0.0)
    kirdy.laser.set_pd_mon_dark_current(0.0)
    kirdy.laser.set_pd_mon_responsitivity(0.0)

    # Configure the thermostat NTC thermistor parameters.
    kirdy.thermostat.set_sh_r0(10.0 * 1000)
    kirdy.thermostat.set_sh_t0(25)
    kirdy.thermostat.set_sh_beta(3900)

    # Configure the thermostat output limits.
    # The actual output current is limited by the hardware limit set below. 
    kirdy.thermostat.set_tec_max_cooling_i(1.0)
    kirdy.thermostat.set_tec_max_heating_i(1.0)
    kirdy.thermostat.set_tec_max_v(4.0)

    # Configure the thermostat temperature monitor limit.
    # Exceeding the limit will trigger over temperature protection alarm.
    # The laser diode and thermostat power will be turned off.
    kirdy.thermostat.set_temp_mon_upper_limit(70)
    kirdy.thermostat.set_temp_mon_lower_limit(0)

    # Configure the thermostat PID related parameter.
    # You can configure the PID parameter with the autotune tool.
    # Here provides an example if it is configured manually.
    kirdy.thermostat.set_temperature_setpoint(25)
    kirdy.thermostat.set_pid_kp(0.15668282198105507)
    kirdy.thermostat.set_pid_ki(0.002135962407793784)
    kirdy.thermostat.set_pid_kd(0.829254515277143)
    kirdy.thermostat.set_pid_output_max(1.0)
    kirdy.thermostat.set_pid_output_min(-1.0)

    # Configure the thermostat ADC Filter Setting / PID Update Rate / Report Rate.
    # The ADC sampling rate determines the report and pid update rate.
    # The chosen filter and sampling rate affects the noise of the readings.
    # For details, please refer to the AD7172 da`tas`heet.
    kirdy.thermostat.config_temp_adc_filter(FilterConfig.Sinc5Sinc1With50hz60HzRejection.f16sps)

    # Configure thermostat to run in PID control mode
    kirdy.thermostat.set_pid_control_mode()
    
    # When control mode is switched from PID to constant current(CC) control mode,
    # the thermostat keeps its instantaneous output current unchanged.
    # Thermostat output current should only be set if it is in CC control mode
    # or the value set will not be overwritten by PID output. 
    kirdy.thermostat.set_constant_current_control_mode()
    kirdy.thermostat.set_tec_i_out(0.0)

    # Save the above settings configured into the flash
    kirdy.device.save_current_settings_to_flash()

    # Power on the laser diode and thermostat
    kirdy.laser.set_power_on(True)
    kirdy.thermostat.set_power_on(True)

    pp(kirdy.device.get_settings_summary())
    pp(kirdy.device.get_status_report())

def main():
    kirdy = Kirdy()
    kirdy.start_session(host='192.168.1.128', port=1337)

    while not(kirdy.connected()):   
        pass

    ld_thermostat_cfg(kirdy)
    # active_report(kirdy)
    # await device_cfg(kirdy)
    # enter_dfu_mode(kirdy)

    kirdy.end_session(block=True)

if __name__ == "__main__":
    main()