- MATLAB 2009 LICENCE FILE HOW TO
- MATLAB 2009 LICENCE FILE INSTALL
- MATLAB 2009 LICENCE FILE SERIAL
- MATLAB 2009 LICENCE FILE DRIVER
- MATLAB 2009 LICENCE FILE CODE
Set_adc_channel(0) // *Enable AN0 as analog input*ĭelay_us(10) // *Pause 10us to set up ADC*ĭata_tx = read_adc() // *Read POT on analog port (0-255)* Setup_adc(ADC_CLOCK_INTERNAL) // *the range selected has to start with AN0* Setup_adc_ports(AN0) // *Enable AN0 as analog potentiometer input* Int8 data_tx, data_rx = 0 // Set up data_tx (transmit value), data_rx (recieve value) #use rs232(baud=19200, UART1) // Set up PIC UART on RC6 (tx) and RC7 (rx) #DEVICE ADC=8 // *set ADC to 8 bit accuracy* Lines unnecessary for RS232 communication are commented with enclosing asterisks ('*.*').
MATLAB 2009 LICENCE FILE SERIAL
Note the analog input is only for testing purposes, and is not necessary for serial communication. Responds with a current reading of an analog input (potentiometer) and the last received data. The main loop of this program waits for a data transmission over the Serial port, and This program is designed to communicate to a computer using RS232 (Serial) Communication. SerialComm.c Scott McLeod, Sandeep Prabhu, Brett Pihl
MATLAB 2009 LICENCE FILE CODE
Image of wiring for serial communication between PIC 18F4520 and PC PIC Code /* Finally, the female DB-9 connector allows the circuit to connect to the PC's serial port. The MAX232N level converter provides bidirectional voltage shifting for digital communication between the PIC and PC (read more about this chip and level conversion on the RS232 wiki here). The potentiometer serves as an analog input to the PIC, which is converted to a digital signal through the PIC's analog to digital converter pin. There are three basic components in this setup. The wiring diagram for serial communication is shown below. The programs can easily be modified to create any custom protocol, but are designed to show simple 2-way communication between Matlab and the PIC.
The PIC is also programmed to display the character received from the PC on its LED array (D register) as a 8-bit ASCII number. In Matlab, if a users sends data to the PIC by entering a character, the PIC responds with the current potentiometer reading and the last received byte from the PC. Our program was designed to read a potentiometer through the PIC's ADC (Analog to Digital Converter) port and transmit the digitized readings over the serial cable to the PC (upon request). The PIC was programmed with our C code as shown below. Refer to the Circuit section for details on this connection. The female DB9 connector is used so no wires need to be directly soldered to the serial cable.
MATLAB 2009 LICENCE FILE HOW TO
A picture is shown below of how to get this information in the device manager.Ī female DB9 connector was wired to our level shifter to convert the voltages, with the level shifter connected to our PIC. In our program, our serial port was COM4. Make a note of the COM port number corresponding to "USB-SERIAL CH340" as listed in this section. To configure the Matlab script to connect to the proper serial port, use the device manager (Right click My Computer->manage) and expand the section "Ports (COM & LPT)".
MATLAB 2009 LICENCE FILE DRIVER
This driver is also available online at this link:
MATLAB 2009 LICENCE FILE INSTALL
To install this driver, you must first plug in the USB cable, and run the installation program located on the CD corresponding to the model on the USB Cable (:\HL-232-340\HL-340.exe). This cable requires 1 driver installation as included on the mini-cd. A standard RS232 connection is called a DB9 connector and follows the pin diagram shown here: **Important! DO NOT connect the serial Rx/Tx lines DIRECTLY to the PIC!!!**Ī level shifter chip is necessary to convert the high and low logic voltages from the desktop computer (+12V/-5V) to (+5V,0V) for the PIC.
In this lab, we used a cheap cable found at For demonstration purposes, the PIC will send digital potentiometer readings to Matlab as well as receive keystrokes from the Matlab user to light up LEDs on its circuit board.Ī USB to RS232 adapter and level shifter chip were used to connect the computer to the PIC. This project is to establish serial port connection with the PIC microcontroller and demonstrate bidirectional communication between the PIC and a Matlab program. Matlab has a "serial" function that allows it to communicate through a serial port.
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