My first post here was
http://www.hobbyprojects.in/2013/03/serial-communication-between-pc-and-8051.html which went viral. I had also made a video on sending data from 8051 to Hyperterminal(which will be present in PC). The video was missing in the website. We will see in detail , the serial communication between Microcontroller and Hyperterminal.
How to send data from Microcontroler to Hyperterminal ?
 |
| Detailed Circuit diagram |
The circuit consists of Microcontroller, Max232, COMPIM, inverters and virtual terminal as shown in the figure. We have used Free virtual serial ports emulator so that we can connect two or three communication ports together.
Make the port of COMPIM as COM4. The data sent from Microcontroller will flow via COM4.
Since, the Hyperterminal doesn't have many ports inbuilt, we will use virtual ports emulator to get the ports. Here we have connected COM2 and COM4 in pair. The data sent from COM4 will also flow through COM2 as they are connected.
Hyperterminal will be in the following in the computer. Start->All programs--> Accessories-->Communications-->Hyperterminal
Here the port via which the hyperterminal makes communication with microcontroller is COM2.
 |
| Set the properties. Baud Rate should be as defined in 8051 |
 |
| Click on Echo typed characters locally |
The data sent from Microcontroller will be displayed on Hyperterminal. Start the simulation, you can see the output in virtual terminal as shown below.
The actual data, "Hello" which is transferred from Microcontroller (8051) to PC/Computer will be displayed in the hyperterminal. Thus, the data is successfully transmitted from 8051 to Hyperterminal.
I have made a video too. Please watch here. The code is simple, if anyone needs the code. Please use the comment box. Thanks.
Here the port via which the hyperterminal makes communication with microcontroller is COM2.
