CCS RS232 DEMO DRIVER DOWNLOAD

The use rs directive provides the compiler the information about the RS parameters which shall be used for the communication. Needless to say, the properties have to match the settings we are using in the PIC. They are available at low cost. RS is a standard for a serial communication interface which allows to send and receive data via at least three wires. There are a lot of terminal programs available. Just enter a text which will identify the connection, e. To be able to see the data transmitted from the Microcontroller and to send data to the Microcontroller we have to run a terminal program on the PC.

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I have developed deemo RS module which allows direct connection to the microcontroller. RS is a standard for a serial communication interface which allows to send and receive data via at least three wires. Just enter a text which will identify the connection, e. That is a really great feature of the CCS C compiler.

In the following dialog we have to set the connection properties. It is more or less self explaining: PIC receives data and sends it back. The connections on the DB9 connector between pins 1,4,6 and 7,8 rs22 required to satisfy the RS hardware handshake signals which we will not use here.

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It just requires 4 capacitors to do its job. You can find the RS module here. The RS interface can be used for many purposes like ccs commands from a PC to a microcontroller, send debug information from a micontroller to a terminal, download new firmware to the microcontroller and many other things.

ccs rs232 usb

Block Diagram The following block diagram shows the whole setup: They are available at low cost. The use rs directive provides the compiler the information about the RS parameters which shall be used for the communication.

Software Now since the hardware is ready we have to write the software for the PIC microcontroller. For serial communication the line used to transmit data is called TX and the line used to receive data is called RX.

The use delay directive provides the compiler with the information about the clock frequency at which the PIC is running. Once this is done, just reset the PIC and the demo output shal be visible.

To be able to see the data transmitted from the Microcontroller and to send data to the Microcontroller we have to run a terminal program on the PC. It hides all the register settings for the user. The below picture shows the necessary connections.

On the PC we will use a termial program to send and receive data. We will use this simple configuration to test and understand the RS communication. Needless to say, the properties have to match the settings we are using in the PIC.

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You can find it in the Communication Folder: I will show here how to use HyperTerminal which is included in Microsoft Windows. Hardware Picture Below a picture of the hardware setup. Fs232 connection Now, since we have the required hardware and firmware, we can connect the hardware to the PC.

This will r2s32 important later when we configure the baudrate for the serial communication. On startup it will ask for a connection name. Only the some parameters have to be provided, the rest is done by the compiler.

CCS, Inc. – Version xx

Data sent by the microcontroller will be shown in the terminal window and any key pressed inside the terminal will send the corresponding demoo code to the microcontroller. These external capacitors are required for the charge pump inside the chip which generates the required voltage levels. There are a lot of terminal programs available.

The level converter is required to translate the voltage level of the microntroller to RS voltage level.