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1. #Qinheng electronics hl 340 usb serial adapter install
2. #Qinheng electronics hl 340 usb serial adapter serial

#Qinheng electronics hl 340 usb serial adapter serial

Print("".format("Blah", blah.bits))Ĭount = int(str(result.registers),16) + int(str(result. I have an arduino nano clone with a CH340 serial chip. Result = client.read_holding_registers(address=3909, count=2,unit=1) Bus 002 Device 006: ID 1a86:7523 QinHeng Electronics HL-340 USB-Serial adapter. from import ModbusSerialClient as ModbusClientĬlient = ModbusClient(method='rtu',port='/dev/ttyUSB1',parity= 'E',stopbits=1,bytesize=8,baudrate=19200,timeout=3)

#Qinheng electronics hl 340 usb serial adapter install

The answer turns out to be that I needed the kmod-usb-serial-ch341 kernel package: opkg install kmod-usb-serial-ch341 The HL-340 is a CH 340 compatible device. lsusb -d 1a86:7523 -v Bus 003 Device 104: ID 1a86:7523 QinHeng Electronics HL-340 USB-Serial adapter Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 255 Vendor Specific Class bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 8 idVendor 0x1a86 QinHeng Electronics idProduct 0x7523 HL-340 USB-Serial adapter bcdDevice 2. I have this 'QinHeng Electronics HL-340 USB-Serial adapter' and a couple of DS18B20 temperature/humidity sensor but I can't get to read data using digitemp. Ive uploaded OptiBoot to Atmega328 and then Ive set BLB1 to lock LPM and SPM in the boot section and Ive set the BOOTRST fuse to One. Which use the CH340 chip : With one difference, Ive use SPI pin to program the MCU. There have been similar questions on this site but none of them seem to have been answered. Qinheng Electronics Hl-340 Usb-serial Adapter Qinheng Electronics Hl-340 Usb-serial Adapter (usb2.0-ser ) Posting this in case it is useful to others. Ive started to build a Arduino Nano with CH340g using this schematic. I am able to read the data on windows but RPi returns "none". QinHeng Electronics HL-340 USB-Serial adapter USB\VID 1a86&PID 7523 Select the driver for your operating system and its bit. This is the driver for the oh-so-sought-after Dynex USB to Serial adapter. After much research I found this code on internet. This is HL-340 USB serial port COM USB to RS232 USB Nine Serial Line Support Windows 7-64. I have been trying to read data from a modbus slave device using pymodbus.