MATLAB: How to use matlab to transmit picture to FPGA via UART

fpgatxtuart

hey guys

recently i have used matlab to convert picture to binary format and written into XXX.txt. Now i am confused that how to transmit binary format data into FPGA via UART? i intend to use UART to transmit data.i know it is necessary to write a HDL module to get the data coming through UART. the other problem is the setup step in PC.Do i need extra tool except for Matlab to complete the work?

i can convert picture into binary format and written into txt now. Thanks

Best Answer

serial() the COM port. Configure its settings. fopen() the serial object. Use fwrite() and fread() to exchange data.

One difficulty is that UART usually refers to TTL levels, but serial port objects are usually RS232 / RS422, or else they are virtual serial ports over USB. You can get USB ports that have TTL connectors.

Related Solutions

MATLAB: How to output a binary txt file to serial port in order

"binary text file" is a contradiction. The file is either line structured or it is not. For text files it makes sense to talk about left to right and top to bottom, but it does not make sense to do that for binary files: for binary files it only makes sense to talk about beginning to end.

The code you used is appropriate for sending, in order, the first 32768 bytes of a binary file to a serial port that does not care about flow control, to be received by a system that is not expecting line terminators. The code is also for the case where there is no structure to the transmission -- structure that might, for example, say "Okay, here is a new image that is 768 by 512, grayscale, 8 bits per pixel".

The 'ieee-be' is misleading because "endian" conversions do not have meaning for individual bytes.

MATLAB: How to transmit hexadecimal codes to the instrument using the Instrument Control Toolbox 2.6 (R2008a)

To transmit and receive hex codes to your device via the serial port interface, use the FWRITE and FREAD commands (used to transmit and receive binary data) as opposed to the FPRINTF and FSCANF command (used to write and read text).

Below is an example that uses the FWRITE and FREAD commands to transmit and receive a series of hex codes via the serial port interface:

s = serial('COM1');
fopen(s);
%%Specify hex codes to be transmitted
txdata = ['01';'E8';'C3';'00';'B2';'F9';'76'];
%Convert to decimal format
txdata_dec = hex2dec(txdata);
%Write using the UINT8 data format
fwrite(s,tcdata_dec,'uint8');
%Read back data in decimal format
rxdata_dec = fread(s);
% Convert data back to hexadecimal format
rxdata = dec2hex(rcdata_dec)
fclose(s)
delete(s)
clear s

Best Answer

Related Solutions

MATLAB: How to output a binary txt file to serial port in order

MATLAB: How to transmit hexadecimal codes to the instrument using the Instrument Control Toolbox 2.6 (R2008a)

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