def __init__(self):
self._dac = ad5689.create_from_pins(cs=board.DAC_CS)
self._dac.soft_reset()
self._cv_a = voltageio.VoltageOut(self._dac.a)
self._cv_a.direct_calibration(calibration.channel_a)
self._cv_b = voltageio.VoltageOut(self._dac.b)
self._cv_b.direct_calibration(calibration.channel_b)
self._cv_c = voltageio.VoltageOut(self._dac.a)
self._cv_c.direct_calibration(calibration.channel_c)
self._cv_d = voltageio.VoltageOut(self._dac.b)
self._cv_d.direct_calibration(calibration.channel_d)
self._gate_1 = digitalio.DigitalInOut(board.G1)
self._gate_1.direction = digitalio.Direction.OUTPUT
self._gate_2 = digitalio.DigitalInOut(board.G2)
self._gate_2.direction = digitalio.Direction.OUTPUT
self._gate_3 = digitalio.DigitalInOut(board.G3)
self._gate_3.direction = digitalio.Direction.OUTPUT
self._gate_4 = digitalio.DigitalInOut(board.G4)
self._gate_4.direction = digitalio.Direction.OUTPUT
self._gate_1_trigger = trigger.Trigger(self._gate_1)
self._gate_2_trigger = trigger.Trigger(self._gate_2)
self._gate_3_trigger = trigger.Trigger(self._gate_3)
self._gate_4_trigger = trigger.Trigger(self._gate_4)
self._gate_1_retrigger = trigger.Retrigger(self._gate_1)
self._gate_2_retrigger = trigger.Retrigger(self._gate_2)
self._gate_3_retrigger = trigger.Retrigger(self._gate_3)
self._gate_4_retrigger = trigger.Retrigger(self._gate_4)
self.led = StatusLED()
def test_out_linear_calibration_real_range(voltage, value):
analog_out = AnalogOut()
voltage_out = winterbloom_voltageio.VoltageOut(analog_out)
voltage_out.linear_calibration(0.0, 3.3)
voltage_out.voltage = voltage
assert analog_out.value == value
def test_out_linear_calibration_normalized(voltage, value):
analog_out = AnalogOut()
voltage_out = winterbloom_voltageio.VoltageOut(analog_out)
voltage_out.linear_calibration(0.0, 1.0)
voltage_out.voltage = voltage
assert analog_out.value == value
def test_out_linear_calibration_bipolar(voltage, value):
analog_out = AnalogOut()
voltage_out = winterbloom_voltageio.VoltageOut(analog_out)
voltage_out.linear_calibration(-0.5, 0.5)
voltage_out.voltage = voltage
assert analog_out.value == value
def __init__(self):
if _utils.is_beta():
dac_driver = ad5689
# 5689 is calibrated from nominal values.
calibration = _calibration.beta_nominal_calibration()
else:
dac_driver = ad5686
# 5686 is externally calibrated.
calibration = _calibration.load_calibration()
self._dac = dac_driver.create_from_pins(cs=board.DAC_CS)
self._dac.soft_reset()
self._cv_a = voltageio.VoltageOut(self._dac.a)
self._cv_a.direct_calibration(calibration["a"])
self._cv_b = voltageio.VoltageOut(self._dac.b)
self._cv_b.direct_calibration(calibration["b"])
# 5686 has 4 channels.
if dac_driver == ad5686:
self._cv_c = voltageio.VoltageOut(self._dac.c)
self._cv_c.direct_calibration(calibration["c"])
self._cv_d = voltageio.VoltageOut(self._dac.d)
self._cv_d.direct_calibration(calibration["d"])
self._gate_1 = digitalio.DigitalInOut(board.G1)
self._gate_1.direction = digitalio.Direction.OUTPUT
self._gate_2 = digitalio.DigitalInOut(board.G2)
self._gate_2.direction = digitalio.Direction.OUTPUT
self._gate_3 = digitalio.DigitalInOut(board.G3)
self._gate_3.direction = digitalio.Direction.OUTPUT
self._gate_4 = digitalio.DigitalInOut(board.G4)
self._gate_4.direction = digitalio.Direction.OUTPUT
self._gate_1_trigger = trigger.Trigger(self._gate_1)
self._gate_2_trigger = trigger.Trigger(self._gate_2)
self._gate_3_trigger = trigger.Trigger(self._gate_3)
self._gate_4_trigger = trigger.Trigger(self._gate_4)
self._gate_1_retrigger = trigger.Retrigger(self._gate_1)
self._gate_2_retrigger = trigger.Retrigger(self._gate_2)
self._gate_3_retrigger = trigger.Retrigger(self._gate_3)
self._gate_4_retrigger = trigger.Retrigger(self._gate_4)
self.led = StatusLED()
def test_out_direct_calibration(voltage, value):
analog_out = AnalogOut()
voltage_out = winterbloom_voltageio.VoltageOut(analog_out)
# Very non-linear. The first volt takes up half of the range.
voltage_out.direct_calibration({
0: 0,
1.0: 32768,
10: 65535,
})
voltage_out.voltage = voltage
assert analog_out.value == value
import board
from winterbloom_ad_dacs import ad5686
import winterbloom_voltageio
import supervisor
import neopixel
import microcontroller
import struct
supervisor.disable_autoreload()
pix = neopixel.NeoPixel(board.NEOPIXEL, 1, pixel_order=(0, 1, 2))
pix.brightness = 0.1
pix[0] = (255, 0, 255)
dac = ad5686.create_from_pins(cs=board.DAC_CS)
vio_a = winterbloom_voltageio.VoltageOut(dac.a)
vio_b = winterbloom_voltageio.VoltageOut(dac.b)
vio_c = winterbloom_voltageio.VoltageOut(dac.c)
vio_d = winterbloom_voltageio.VoltageOut(dac.d)
def set_dac(channel, dac_code):
getattr(dac, channel).value = dac_code
def _vio_for_channel(channel):
if channel == "a":
return vio_a
elif channel == "b":
return vio_b
elif channel == "c":
return vio_c