使用Pymodbus，我希望将线圈状态绑定到服务器内的GPIO引脚，而不是从客户端

import RPi.GPIO as GPIO
from pymodbus.server.sync import StartTcpServer
from pymodbus.datastore import ModbusSequentialDataBlock
from pymodbus.datastore import ModbusSlaveContext, ModbusServerContext

# 定义线圈状态的数据块
coils = ModbusSequentialDataBlock(0, [False]*10)

# 创建Modbus从机上下文
slave_context = ModbusSlaveContext(coils=coils, zero_mode=True)

# 创建Modbus服务器上下文
server_context = ModbusServerContext(slaves=slave_context, single=True)

# 将线圈状态绑定到GPIO引脚
GPIO.setmode(GPIO.BCM)
GPIO.setup(17, GPIO.OUT)
GPIO.output(17, False)  # 初始化GPIO引脚状态

# 定义读取线圈状态的回调函数
def read_coils_callback(address, count):
    return server_context[0].getValues(0, address, count)

# 定义写入线圈状态的回调函数
def write_coils_callback(address, values):
    server_context[0].setValues(0, address, values)

# 启动Modbus服务器
StartTcpServer(server_context, address=("localhost", 5020), 
               identity=None, read_callback=read_coils_callback, 
               write_callback=write_coils_callback)