ESP32-S3 MicroPython代码错误

Question

各位小伙伴好!
近期想用MicroPython在ESP32-S3硬件平台开发"蓝牙透传功能",下面是我写的代码,我是参考官方手册来写的(bluetooth — 低级蓝牙 — MicroPython中文 1.17 文档) ,但是 跑到ble.send() 的时候会报错 ,请大家帮忙看看,感谢!
另外还有个小问题:我在开发ESP32-S3的时候,不知道 当前版本的固件,能够支持哪些Micropython模块, 有时候就发现 同样的程序 1.20.0 版本不能运行,1.19.0版本又可以运行, 不知道MicroPython固件版本的差异点在哪,我要如何参考当前版本进行开发?

from machine import Pin
from machine import Timer
from time import sleep_ms
from machine import UART
import bluetooth
import binascii

BLE_STA = 0
BLE_MSG = ""
UART_MSG = ""

# 初始化串口
uart1 = UART(1, baudrate=9600, rx=11, tx=10, bits=8, parity=None, stop=1)


class ESP32_BLE():
    def __init__(self, name):
        self.led = Pin(2, Pin.OUT)
        self.timer0 = Timer(0)
        self.name = name
        self.ble = bluetooth.BLE()
        self.ble.active(True)
        self.ble.config(gap_name=name)
        self.disconnected()
        self.ble.irq(self.ble_irq)
        self.register()
        self.advertiser()

    def connected(self):
        global BLE_STA
        self.led.value(1)
        self.timer0.deinit()
        BLE_STA = 1
        print('连接成功')

    def disconnected(self):
        global BLE_STA
        self.timer0.init(period=250, mode=Timer.PERIODIC, callback=lambda t: self.led.value(not self.led.value()))
        BLE_STA = 0
        print('断开连接')

    def ble_irq(self, event, data):
        global BLE_MSG
        if event == 1:  # _IRQ_CENTRAL_CONNECT 手机链接了此设备
            self.connected()
        elif event == 2:  # _IRQ_CENTRAL_DISCONNECT 手机断开此设备
            self.advertiser()
            self.disconnected()
        elif event == 3:  # _IRQ_GATTS_WRITE 手机发送了数据
            buffer = self.ble.gatts_read(self.rx)
            BLE_MSG = buffer.decode('UTF-8').strip()
            MSG_hex = binascii.hexlify(BLE_MSG).decode()
            # 转换为十六进制
            uart1.write(MSG_hex)
            print("蓝牙接收到数据:", MSG_hex)

    def register(self):
        service_uuid = '6E400001-B5A3-F393-E0A9-E50E24DCCA9E'
        reader_uuid = '6E400002-B5A3-F393-E0A9-E50E24DCCA9E'
        sender_uuid = '6E400003-B5A3-F393-E0A9-E50E24DCCA9E'

        services = (
            (
                bluetooth.UUID(service_uuid),
                (
                    (bluetooth.UUID(sender_uuid), bluetooth.FLAG_NOTIFY),
                    (bluetooth.UUID(reader_uuid), bluetooth.FLAG_WRITE),
                )
            ),
        )

        ((self.tx, self.rx,),) = self.ble.gatts_register_services(services)

        
    def send(self, data):
        data_bytes = bytes(data + '\n', 'UTF-8')
        self.ble.gatts_notify(0, self.tx, data_bytes)

        
    def advertiser(self):
        name = bytes(self.name, 'UTF-8')
        adv_data = bytearray('\x02\x01\x02') + bytearray((len(name) + 1, 0x09)) + name
        self.ble.gap_advertise(100, adv_data)
        print(adv_data)
        print("\r\n")


if __name__ == "__main__":
    ble = ESP32_BLE("NKD5-S")

    while True:
        if uart1.any():
            UART_MSG = uart1.read()
            if BLE_STA == 1:
                print("连接蓝牙,转发数据")
                ble.send("123 22")
            else:
                print("未连接,不转发")
            
            print("串口接收到数据:", UART_MSG)
            UART_MSG = ""
        sleep_ms(100)

Answer 1

改成这样就行了

    def send(self, data):
        data_bytes = bytes.fromhex(data)  # 将十六进制字符串转换为字节
        self.ble.gatts_notify(1, self.tx, data_bytes)
        print("发送的数据长度:", len(data_bytes))  # 打印发送数据的长度