sweep_cd

def sweep_cd():
    samples = 3000
    threshold = 0.995
    chan_high = 0b1
    hf_pll = 0b01
    SPI.open(1, 0)
    try:
        set_stand_by()

        for chan_low in range(0b00000000, 0b11111111):
            SPI.xfer2([0b00000000, chan_low, 0b00001100, 0b01000100, 0b01000100, 0b00000100, myAddr[0], myAddr[1], myAddr[2], myAddr[3], 0b11011111])
            set_rx()
            presence = 0.0
            for sample in range(0, samples):
                if GPIO.input("P9_12"): presence = presence+1
            sys.stdout.write ( '\033[94m'+"[+]"+'\033[0m'+"Carrier found at "+str((422+(float(chan_low)/10))*(1))+"Mhz; stability "+str(presence/samples)+".\n" if (presence/samples)>threshold else "")
        for chan_low in range(0b00000000, 0b11111111):
            SPI.xfer2([0b00000000, chan_low, 0b00001100|chan_high, 0b01000100, 0b01000100, 0b00000100, myAddr[0], myAddr[1], myAddr[2], myAddr[3], 0b11011111])
            set_rx()
            presence = 0.0
            for sample in range(0, int(samples)):
                if GPIO.input("P9_12"): presence = presence+1
            sys.stdout.write( '\033[94m'+"[+]"+'\033[0m'+"Carrier found at "+str((422+(float(chan_low|0b100000000)/10))*(1))+"Mhz; Stability "+str(presence/samples)+".\n" if (presence/samples)>threshold else "")

        for chan_low in range(0b00000000, 0b11111111):
            SPI.xfer2([0b00000000, chan_low, 0b00001100|hf_pll, 0b01000100, 0b01000100, 0b00000100, myAddr[0], myAddr[1], myAddr[2], myAddr[3], 0b11011111])
            set_rx()
            presence = 0.0
            for sample in range(0, int(samples)):
                if GPIO.input("P9_12"): presence = presence+1
            sys.stdout.write( '\033[94m'+"[+]"+'\033[0m'+"Carrier found at "+str((422+(float(chan_low)/10))*(2))+"Mhz; stability "+str(presence/samples)+".\n" if (presence/samples)>threshold else "")

        for chan_low in range(0b00000000, 0b11111111):
            SPI.xfer2([0b00000000, chan_low, 0b00001100|chan_high|hf_pll, 0b01000100, 0b01000100, 0b00000100, myAddr[0], myAddr[1], myAddr[2], myAddr[3], 0b11011111])
            set_rx()
            presence = 0.0
            for sample in range(0, int(samples)):
                if GPIO.input("P9_12"): presence = presence+1
            sys.stdout.write( '\033[94m'+"[+]"+'\033[0m'+"Carrier found at "+str((422+(float(chan_low|0b100000000)/10))*(2))+"Mhz; stability "+str(presence/samples)+".\n" if (presence/samples)>threshold else "")

    finally:
        SPI.close()