pico/picoDetect.py at main · jbeale1/pico · GitHub

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# Python3 host code to find connected Pico boards
# tested only from Raspberry Pi 4 host
#  needs PyUSB to find Pico in bootloader mode
#  'sudo apt install python-usb python3-usb'
# 14-March-2021 J.Beale

import usb.core

VID      = 0x2e8a  # Vendor Id: Raspberry Pi Pico device
BootID   = 0x0003  # Pico bootloader mode
PythonID = 0x0005  # Pico in MicroPython Serial Device mode

device = usb.core.find(idVendor=VID, idProduct=BootID, find_all=1)
pCountBoot = sum(1 for _ in device)

device = usb.core.find(idVendor=VID, idProduct=PythonID, find_all=1)
pCountSerial = sum(1 for _ in device)

print("%d Pico bootloader devices" % pCountBoot)
print("%d Pico serial devices" % pCountSerial)

# ---------------------------------------------
import serial
import serial.tools.list_ports

devPico = ""  # haven't found one yet
for port in serial.tools.list_ports.comports():
    if (port.vid == 11914) and (port.pid == 5): # IDs for Pico board
        if (devPico == ""):
          devPico = port.name
          print("Using Pico connected at %s" % devPico)
        else:
          print("...another Pico found at %s" % port.name)

if devPico == "":
    print("No Pico board found.")
    exit()

ser = serial.Serial(port='/dev/'+devPico)

while True:
  print(ser.readline().rstrip().decode('utf-8'))

# Example Output:
#
# Found Pico connected at ttyACM1
# 225,449.765205,1.999999,0.100002,0.01222,0.01222,0.12222,0.12222,1.00000
# 226,451.765203,2.000008,0.100008,0.01222,0.01222,0.12221,0.12221,0.99999
# 227,453.765202,2.000002,0.100002,0.01222,0.01222,0.12222,0.12222,0.99998
# 228,455.765200,1.999995,0.099998,0.01222,0.01222,0.12222,0.12222,1.00000
# 229,457.765198,2.000007,0.100003,0.01222,0.01222,0.12222,0.12222,0.99999