bytes callable() chr() classmethod() compile() complex delattr() dict dir() divmod() enumerate() eval() exec() filter() float frozenset getattr() globals() hasattr() hash() hex() id() input() int int.from_bytes() int.to_bytes() isinstance() issubclass() iter() len() list loc...
self.i2c.writeto(self.dev_addr, buf) time.sleep_ms(5) # 写入周期等待 return True except OSError: return False def read_byte(self, addr): """单字节读取(带异常处理)""" if addr > self.max_addr: raise ValueError("Address overflow") try: self.i2c.writeto(self.dev_addr, bytes([addr...
hex()¶ id()¶ input()¶ classint¶ classmethodfrom_bytes(bytes,byteorder)¶ to_bytes(size,byteorder)¶ 在MicroPython中,byteorder参数须为位置参数(与CPython兼容)。 isinstance()¶ issubclass()¶ iter()¶ len()¶ classlist¶ ...
// 字符串转byte stringToBytes(str) { var array = new Uint8Array(str.length); for (var i = 0, l = str.length; i < l; i++) { array[i] = str.charCodeAt(i); } // console.log(array); return array.buffer; }, 注意这个方法使用的是Uint8Array,ESP32用的是buffer.decode('UTF-8...
bytestoken=hmac.new(secret_key,data_to_sign,digestmod=hashlib.sha256).hexdigest()# 6. 根据物联网通信平台规则生成 password 字段password="{};{}".format(token,"hmacsha256")obj={"clientid":clientid,"username":username,"password":password,"server":f"{productID}.iotcloud.tencentdevices.com",...
scan()for device in devices: print("Decimal address: ",device," | Hexa address: ",hex(device))i2c.writeto(0x51, 'b')print(i2c.readfrom(0x51, 4)) # read 4 bytes from device with address 0x51i2c.writeto(0x51, 'a') # write 'a' to device with address 0x51print(i2c.readfrom(...
if self.debug >= 3: print(" Read Reg address:", hex(address)) # .to_bytes(5, 'big', signed=False) if self.debug >= 3: print(" rb:", rb) if self.debug >= 2: print(" status:", rb[0] & 0b10) status = int.from_bytes(rb, 'big') >> 32 if signed: return self.Twos...
reference: add strings vs bytes to speed optimisation tips library/espnow: clarify usage of the "rate" configuration key library/marshal: document the marshal module fix double 'the' in documentation library/machine.Pin: show availability of low, high and toggle samd: update the SAMD documentati...
() th = task_handler.TaskHandler(500) scrn = lv.screen_active() scrn.set_style_bg_color(lv.color_hex(0x000000), 0) # 0x000000 , 0x0000FF label = lv.label(scrn) label.set_text("HELLO WORLD!!") label.set_style_text_color(lv.color_hex(0x0000FF), 0) label.align(lv.ALIGN....
#print(hex(len(pkt)), hexlify(pkt, ":")) self.sock.write(pkt) self._send_str(topic) self.sock.write(qos.to_bytes(1, "little")) while 1: op = self.wait_msg() if op == 0x90: resp = self.sock.read(4) #print(resp) ...