class BusPirateStream(threading.Thread):
def __init__(self, port='COM1', sinks=None, autoStart=True):
threading.Thread.__init__(self)
self.daemon = True
self.dispatcher=AsynchDispatch(sinks=sinks,
callbacks={'serial_data':[self.send]})
try:
self.bp = UART(port,115200)
except:
print 'Failed to start BusPirate'
self.bp = None
if autoStart:
self.start()
def run(self):
if self.bp is not None:
while(True):
rx_bytes = self.bp.response(1000,True)
if rx_bytes != '':
self.dispatcher.dispatch(Message('serial_data',rx_bytes))
def send(self, message):
if self.bp is not None:
self.bp.bulk_trans(len(message.data),map(ord,list(message.data)))
trig_mode = DEFAULT_TRIGGER_MODE
bp.port.write("\x15")
while 1:
plot = {}
voltage = {}
maxv = 0
minv = 100
time_scale = DEFAULT_TIME_SCALE * time_div
prev_voltage = 0
measure = 0;
if(trig_mode != NO_SYNC):
for k in range(1,2000):
prev_voltage = voltage
measure = bp.response(2, True)
voltage = ord(measure[0]) << 8
voltage = voltage + ord(measure[1])
voltage = (voltage/1024.0) * 6.6
#rising slope
if((voltage >= trigger_level) and (prev_voltage < (voltage * TRIG_CAL)) and (trig_mode == RISING_SLOPE)):
break
if((voltage < trigger_level) and (voltage > 0.01) and (prev_voltage > voltage/TRIG_CAL) and (trig_mode == FALLING_SLOPE)):
break
for i in range(RES_X):
for k in range(time_div - 1):
#ignoring (time_div-1) samples to achieve proper time resolution
bp.response(2, True)
measure = bp.response(2, True)
