Python Oscilloscope.set_interface方法代码示例

# 需要导入模块: from PyHT6022.LibUsbScope import Oscilloscope [as 别名]
# 或者: from PyHT6022.LibUsbScope.Oscilloscope import set_interface [as 别名]
class ScopeInterface(QObject):
    new_data = pyqtSignal(list)
    def __init__(self, parent=None):
        super(ScopeInterface, self).__init__(parent)
        self.inprogress = False

    def initialize(self):
        self.sample_rate_index = 8
        self.voltage_range = 0x01
        self.data_points = 3 * 1024

        self.trigger_level = 150
        self.trigger_type = +1

        self.scope = Oscilloscope()
        self.scope.setup()
        self.scope.open_handle()
        if (not self.scope.is_device_firmware_present):
            self.scope.flash_firmware()
        self.scope.set_interface(1); # choose ISO
        self.scope.set_num_channels(1)
        self.scope.set_sample_rate(self.sample_rate_index)
        self.scope.set_ch1_voltage_range(self.voltage_range)
        time.sleep(0.1)
        return None

    def capture(self):
        if not self.inprogress:
            self.inprogress = True
            self.scope.start_capture()
            shutdown_event = self.scope.read_async(self.data_callback, self.data_points, outstanding_transfers=25)
            print("Clearing FIFO and starting data transfer...")

    def data_callback(self, ch1_data, _):
        d = list(ch1_data)
        i = 0
        #print("got new data ", time.time(), " : ", len(d))
        if self.trigger_type > 0:
            while (i < len(d) - 1) and not (d[i+1] > self.trigger_level and d[i] < self.trigger_level):
                i += 1
        #print("Trigger at ", i)
        if (i != len(d) - 1):
            self.new_data.emit(d[i:])


    def stop(self):
        self.scope.stop_capture()
        print("Stopping new transfers.")
        shutdown_event.set()
        print("Snooze 1")
        time.sleep(1)
        print("Closing handle")
        self.scope.close_handle()
        print("Handle closed.")
        self.inprogress = False

# 需要导入模块: from PyHT6022.LibUsbScope import Oscilloscope [as 别名]
# 或者: from PyHT6022.LibUsbScope.Oscilloscope import set_interface [as 别名]
        elif entry < threshold and running:
            stability.append(current)
            running = False
        else:
            continue
    return stability[1:-1]

sample_rate_index = 24
voltage_range = 0x01
data_points = 3 * 1024

scope = Oscilloscope()
scope.setup()
scope.open_handle()
scope.flash_firmware()
scope.set_interface(1) # choose ISO
scope.set_num_channels(1)
scope.set_sample_rate(sample_rate_index)
scope.set_ch1_voltage_range(voltage_range)
time.sleep(1)

data = deque(maxlen=2*1024*1024)
data_extend = data.extend


def extend_callback(ch1_data, _):
    global data_extend
    data_extend(ch1_data)

start_time = time.time()
print("Clearing FIFO and starting data transfer...")

# 需要导入模块: from PyHT6022.LibUsbScope import Oscilloscope [as 别名]
# 或者: from PyHT6022.LibUsbScope.Oscilloscope import set_interface [as 别名]
numchannels = 1
numseconds = 8          # number of seconds to sample
blocksize = 6*1024      # should be divisible by 6*1024
alternative = 1         # choose ISO 3072 bytes per 125 us

scope = Oscilloscope()
scope.setup()
scope.open_handle()
scope.flash_firmware()
if (not scope.is_device_firmware_present):
    scope.flash_firmware()
else:
    scope.supports_single_channel = True;
print "Setting up scope!"

scope.set_interface(alternative);
print "ISO" if scope.is_iso else "BULK", "packet size:", scope.packetsize
print scope.set_num_channels(numchannels)
# set voltage range
scope.set_ch1_voltage_range(voltagerange)
# set sample rate
scope.set_sample_rate(samplerate)
# we divide by 100 because otherwise audacity lets us not zoom into it
samplerate = samplerate * 1000 * 10

print "Reading data from scope! in ",
for x in range(0, 3):
    print 3-x,"..",
    sys.stdout.flush()
    time.sleep(1)
print "now"