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In my project, i m using at89s51 to control 6 sets of displaying times (each set consist of 4 seven segment displays-> 2 to display hours n another 2 to display minutes). One set for the real time and the other 5 sets use to display the alarm times. i m using BCD to seven segment decoder and 4-to-16 line decoder to support the microprocessor since in my project i need to control (6 set X 4 seven segment display = 24 seven segment displays) which i think is quite complicated. To realize the project i m using the masking technique by assigning each number that is going to display on each seven segment display with the value such as MOV 30H, #13H the value 1 will be fed to 4-to-16 decoder which will make the seven segment display no 1 to turn on and the value 3 will be send to bcd to seven segment decoder which will make the seven segment display no 1 to display the value 3.To realize the complete module i have stored all the values that are used to display the real time and alarm times in the respective location from 30H to 4DH as below:
The memory location from 30H to 35H hold the dynamic values of the real time.I m also using the timer0 interrupt to generate delay for the real time display. the real time is functioning well so as the 5 sets of alarm time. When one of the alarm time is equal to real time a buzzer will be turned on for about 20 second and an LED that has been assigned to the respective alarm time will be turned on and blinking too. This is how my clock module is working.
For the web interface(PHP + mySQL), i m designing two main pages. For the first page, it shows the current real time and alarm times same as been displayed on the module and the second page is modify page at which the users can modify the real time and alarm time accordingly. my problem is how can i interface my module to the PHP + MYSQL which function as server. from server i m also planning to control two different clock modules. Is it possible? Soon, i will attach the hardware which is function well. I realy hope u can help me since my due date is on early april.Thank you \(0__o)/
hmm.. there are many ways.. like executing a program from PHP that passes parameter to serial port. or storing information in database which need to be sent to serial port and a dedicated software running on same PC reading data from database and send it to serial port.
Now for executing program from php you can use exec function. also you need to write a program which will take arguments as what to be sent to serial port. you can make that program using C/C++. www.rickeyworld.info If you feel satisfied with the user's forum reply please click on the thank button.
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that was really sweet.
