There are many options to choose from for this part. You can obviously use any serial terminal (e.g. TeraTerm) or even the simple Arduino Serial Monitor or whichever you prefer. Arduino Serial Monitor Red - power. This pin provides up to 500mA current. YOU MUST NOT use other power supplies if you choose to power the target device with this Adaptor. Learn how to use the USB-TTL Converter module to convert serial data from the PC USB port to TTL UART which is compatible with almost all microcontrollers. Learn how to send/receive serial data to/from the PC from/to the microcontroller. However, in the Embedded-C programming, you just can’t do that. Despite having your variables stored in the RAM, you still have no way to display them other than using the parallel/serial ports. Using the parallel IO ports is kind of inefficient way to do so as you’ll be unnecessarily using a whole bunch of IOs & still getting binary output which may not make that much of sense in many situations. Simply put, the CH340 driver is a piece of software that connects the CH340 chip with the computer to facilitate the chip’s communication with the PC. Q2. How do I test my CH340 driver?

The practical LAB of this tutorial is going to be a simple PC-Controlled embedded system. Which means a computer software is involved (for the PC) as long as a firmware code (for the Microcontroller). Computer Software The parallel IO ports can still be used to display your data in a more convenient way such as 7-segments display as we’ve discussed earlier in this course. Or even the alphanumeric LCDs as we’ll see in the upcoming tutorials. Hereafter, we’ll hook that converter to our bare PIC microcontroller and send some data using our Serial.print() function aka UART_TX()

There is also an Update Now button if you wish to get only the CH340 driver updated. However, it is recommended to update all old drivers to ensure top-notch computer performance.

After successful driver installation, the USB-TTL module should take a random COM port identifier as shown in the image down below. Having the ability to do so, will help you debug your code, provide visual UX for your projects, and much more. PLEASE NOTE – When editing driver INF files, refer to the following document: AN_107 – Advanced Driver Options

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The PL-2303 chip provides a convenient solution for connecting a UART-like full-duplex asynchronous serial device to any Universal Serial Bus (USB) capable host. The PL-2303 highly compatible drivers could successfully simulate generic COM ports on most operating systems. FT232 UART UART Board is a UART module that converts the USB interface to the TTL level. This module enables data communication by connecting the USB interface of a computer or other device to TTL logic-level devices such as microcontrollers, sensors, etc. For simulation purposes, you can use the generic Virtual Terminal in Proteus and just type in the data which you wanna send to the microcontroller. It should give you an idea of what will be happening with the USB-TTL module in the real testing phase. And the connection diagram is just the same.