def get_image(self):
"""
Prompts the Ximea camera to capture a photo after the next GPI spike.
"""
try:
self.camera.get_image(self.image)
return self.image.get_image_data_numpy()
except xiapi.Xi_error:
Interface.choose_print(self.gui, 'camera', 'Xi_error: ERROR 10: Timeout')
Main.abort_session()
return None
def write_value(self,value):
"""
Write a value to the Arduino over Serial.
:argument value: Value to be written to Arduino
:type value: string, int, float
:argument pause: Amount of time spent paused in seconds
:type pause: int, float
"""
Interface.choose_print(self.gui, 'arduino', 'Writing "{}"...'.format(value))
try:
self.serial.write('{}'.format(value))
self.serial.readline()
Interface.choose_print(self.gui, 'arduino', 'Wrote: {}'.format(value))
except serial.SerialException:
Interface.choose_print(self.gui,
'arduino',
'SerialException: WriteFile failed')
Main.abort_session()
def __init__(self,com_number,gui=None):
"""
Initializes an instance of ArduinoController.
:argument com_number: Port number of the Arduino.
:type com_number: int
:keyword gui: Optional interface used to print(default None).
:type gui: Interface.ScarberryGui
"""
self.gui = gui
try:
self.serial = serial.Serial('COM{}'.format(com_number),115200)
Interface.choose_print(gui, 'arduino', 'Waiting for COM{}...'.format(com_number))
print('Waiting for COM{}...'.format(com_number))
time.sleep(ArduinoController.INITIAL_SLEEP);
Interface.choose_print(gui, 'arduino', 'Connected to COM{}.'.format(com_number))
print('Connected to COM{}.'.format(com_number))
except serial.SerialException:
Interface.choose_print(self.gui,
'arduino',
'SerialException: could not open COM{}'.format(com_number))
Main.abort_session()
def __init__(self,framerate,gain=0,gui=None):
"""
Initializes an instance of XimeaCamera.
:argument framerate: Number of pictures taken a second.
:type framerate: int
:keyword gain: Brightness modifier of pictures taken.
type gain: int, float [0 to 6](default 0)
:keyword gui: Optional interface used to print(default None).
:type gui: Interface.ScarberryGui
"""
self.gui = gui
self.image = xiapi.Image()
self.camera = xiapi.Camera()
Interface.choose_print(gui, 'camera', 'Opening camera...')
try:
self.camera.open_device()
exposure = (1000000 / (int(framerate)))
exposure -= math.pow(10, math.floor(math.log(exposure, 10)) - 1)
self.camera.set_exposure(int(exposure))
if gain < 0:
gain = 0
if gain > 6:
gain = 6
self.camera.set_gain(float(gain))
self.camera.set_trigger_source('XI_TRG_EDGE_RISING')
self.camera.set_gpi_mode('XI_GPI_TRIGGER')
self.camera.set_gpo_selector('XI_GPO_PORT1')
self.camera.set_gpo_mode('XI_GPO_FRAME_TRIGGER_WAIT')
self.camera.set_imgdataformat('XI_MONO8')
except xiapi.Xi_error:
Interface.choose_print(gui, 'camera', 'Xi_error: ERROR 56: No Devices Found')
Main.abort_session()
