e104bt02_driver/
├── code/
│   ├── e104bt02.py
│   └── main.py
├── LICENSE
├── package.json
└── README.md

from machine import Pin, UART
from e104bt02 import E104BT02, E104BT02Error

uart0 = UART(
    0,
    baudrate=19200,
    tx=Pin(16),
    rx=Pin(17),
    parity=None,
    stop=1,
)
module = E104BT02(uart0)

try:
    print("baudrate:", module.get_baudrate())
    print("name:", module.get_module_name())
    print("state:", module.get_state())
    print("mac:", module.get_mac())
except E104BT02Error as err:
    print("E104-BT02 error:", err)

module.send(b"RP2040_TO_E104")
data = module.read(timeout_ms=1000)
print(data)

import time
from machine import Pin, UART

from e104bt02 import E104BT02, E104BT02Error

UART_ID = 0
UART_TX_PIN = 16
UART_RX_PIN = 17
UART_BAUDRATE = 19200
UART_PARITY = None
UART_STOP_BITS = 1

print("FreakStudio: E104-BT02 safe AT query example")
time.sleep(3)

uart0 = UART(
    UART_ID,
    baudrate=UART_BAUDRATE,
    tx=Pin(UART_TX_PIN),
    rx=Pin(UART_RX_PIN),
    parity=UART_PARITY,
    stop=UART_STOP_BITS,
)
module = E104BT02(uart0)

try:
    print("Hold MODE or set P00/MOD low before this AT query example.")
    print("The driver cannot detect or switch P00/MOD.")
    print("baudrate=%d" % module.get_baudrate())
    print("stop_bits=%d" % module.get_stop_bits())
    print("parity=%s" % module.get_parity())
    print("module_name=%s" % module.get_module_name())
    print("factory_name=%s" % module.get_factory_name())
    print("software_version=%s" % module.get_software_version())
    print("hardware_version=%s" % module.get_hardware_version())
    print("serial_number=%s" % module.get_serial_number())
    print("state=%s" % module.get_state())
    print("mtu=%d" % module.get_mtu())
    print("role=%s" % module.get_role())
    print("mac=%s" % module.get_mac())
    print("E104-BT02 safe AT query example finished")
except KeyboardInterrupt:
    print("Program interrupted by user")
except (ValueError, TypeError, E104BT02Error, OSError) as err:
    print("E104-BT02 example failed: %s" % str(err))

from machine import Pin, UART
from e104bt02 import E104BT02

uart0 = UART(
    0,
    baudrate=19200,
    tx=Pin(16),
    rx=Pin(17),
    parity=None,
    stop=1,
)
module = E104BT02(uart0)

received = module.read(timeout_ms=20000)
print("BLE -> UART:", received)

payload = b"RP2040_TO_E104"
written = module.send(payload)
print("UART -> BLE bytes:", written)

4800, 9600, 19200, 38400, 57600, 115200

from e104bt02 import (
    E104BT02Error,
    E104BT02TimeoutError,
    E104BT02FrameError,
    E104BT02ResponseError,
)

MIT License

Copyright (c) 2026 FreakStudio

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.