LED screen graphics and text editing software

LED screen graphics and text editing software is a WINDOWS version of static LED screen graphics and text editing software that has powerful graphics and text data editing and sends dot matrix data out through the serial port.

How to use

Unzip the downloaded compressed package to any writable directory and directly execute jjd.exe. For other information, please see the help in the software.
Special note:
I used to work on LED screen projects. Today, I accidentally got this software from a customer that was released less than 4 days ago. I connected it to the serial port to receive its data and study its general characteristics.
The message format can be matched with the LED controller I made. After 7 hours of hard work, I finally figured out the following rules:
1: Press the "Send 1" button, the edited and set dot matrix data will be sent from the designated serial port at the designated baud rate and in the following format:
The first byte: 44H The second byte: the screen number (1-20) The third byte: the high 8 bits of the sending address The fourth byte: the low 8 bits of the sending address
Starting from the 5th byte, it is the dot matrix data of this screen. Scan from left to right and top to bottom according to the image dot matrix. White is 0 (not lit), other colors are 1 (lit), and each
8 bits make up 1 byte. Each byte is assembled from D0 (lowest bit) first. The number of image points in each row must be a multiple of 8. If not, the remaining high bits of the last byte are filled with 0.
Enough. After one line is scanned, the next line will follow until the data on this screen is sent.
2: Press the "Send 2" button, and the data sent will be the same as pressing "Send 1" except that the first byte is changed to 88H.
Three: Press the "Time Calibration" button to send the following 11 bytes in sequence:
66H, 66H, year high byte, year low byte, month, day, week, hour, minute, second, millisecond
The above date and time are obtained from the microcomputer.