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Last update: 23-12-2023

WCH Vendor ID Programming

CH340B Configuration Tool ^{Aeonlabs fork}
This CH340B Configuration Utility is a .Net Framework WinForms Application made by ENTHILNATHAN THANGAVEL - a configuration utility built especially for WCH (WinChipHead) USB-UART Bridge chip - CH340B. The CH340B is a USB to UART Bridge that can be used to provide the Virtual Serial Port interface through USB.
With this application you can read and update the configuration data of CH340B.
The configuration data such as Vendor ID, Product ID, Product Name, Serial Number can be read / modified and written to the CH340B chip. This application requires .Net Framework 4.7.2 or above.

Adafruit's Simple Arduino-based USB VID & PID tester
This is a project Adafruit uses to check incoming goods as well as QC products out of manufacturing. If you have a USB device, the chip inside has a unique VID (vendor ID) and PID (product ID). For non-programmable parts, this pair is 'fixed' by the chipset itself. For programmable parts, like a microcontroller, the VID/PID is programmed in. Basically, you can use it to check chipsets and/or whether your Flora, say, has the right bootloader installed.

// include the library code:

#include <Wire.h>
#include <utility/Adafruit_MCP23017.h>
#include <Adafruit_RGBLCDShield.h>
#include <avrpins.h>
#include <max3421e.h>
#include <usbhost.h>
#include <usb_ch9.h>
#include <Usb.h>
#include <usbhub.h>
#include <address.h>

USB     Usb;
Adafruit_RGBLCDShield lcd = Adafruit_RGBLCDShield();


void setup () {
  Serial.begin(9600);			/* Initialize serial for status msgs */
  Serial.println(F("\nVID PID tester"));

  lcd.begin(16, 2);
  lcd.setBacklight(0x7);
  lcd.print("USB VID/PID Test");
  lcd.setCursor(0,1);
  lcd.print("Waiting for USB");
}

void loop (void) {
  
  // initialize USB
  Serial.println("USB Start");

  if (Usb.Init() == -1) {
    Serial.println("OSC did not start.");
    while (1);
  }
  Serial.println("Waiting for connection...");

  while (1) {
    Usb.Task();
  
    if( Usb.getUsbTaskState() == USB_STATE_RUNNING ) break;
  }
  uint8_t rcode = 0;
  byte num_conf = 0;

  USB_DEVICE_DESCRIPTOR buf;
  rcode = Usb.getDevDescr(1, 0, 0x12, ( uint8_t *)&buf );
  if( rcode ) {
    Serial.print("USB ERROR: "); Serial.println( rcode );
    while (1);
  }
  Serial.print("VID: 0x"); Serial.print(buf.idVendor, HEX);
  Serial.print(" PID: 0x"); Serial.println(buf.idProduct, HEX);

  lcd.clear();
  lcd.print("VID: "); lcd.print(buf.idVendor, HEX);
  lcd.setCursor(0,1);
  lcd.print("PID: "); lcd.print(buf.idProduct, HEX);
  
  Serial.println("***Done!***");
  
  while (1);
}

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