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I got a project from college, i have to do "Keypad to LCD interference using 8051 microcontroller".
Explained: Means when i press key 1, it'll show my name on lcd, by pressing key 2, it'll show my roll number & vice versa.
I just know one thing that this can be code in keil and then we have to burn it using 8051 microcontroller . Can anyone please help me with coding ?
Thanks in advance.
This will help you to interface the LCD and KEYPAD to 8051 micro-controller.
Follow the same on the link and modify the code as your requirement for the keypad. I had implemented the same for my project of developing a basic calculator with 8051.
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I'm tying to convert a MFRC522 arduino chip to an USB device so as to use it natively on windows (with a cli or software) and without an Arduino. I don't know if I was clear (sorry for my bad english). Can anyone help me to do this.
No, you can't do that because you need some mediation between the RFID reader and the PC USB port.
You don't have to use Arduino, but you do need a processor to "translate" the information from the reader and some hardware to speak to USB.
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I need o write a kernel mode driver that plays a note when a key is pressed. I can capture keystrokes but I have no idea how to play sound from kernel. What do I have to do to play a sound? I am brand new to creating drivers.
I need o write a kernel mode driver that plays a note when a key is pressed.
Why?
Seriously, why. What's the reasoning behind this "need"? What's the true reason for the need to play a sound? Maybe there is a better way.
Assuming a PC, with the pcspkr module loaded, you can of course call its functions. But if you want to play something through the soundcard, you'll essentially have to "open" an ALSA device (inside the kernel), and call its fops, all along while user space may do the same thing.
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Can we run generated C code by labVIEW in the raspberry Pi2?
Thanks!
No, you can't - at least officially.
But someone is working on that.
Give a look to this thread on Labview Idea Exchange forum.
Here are some interesting projects (cited in the thread):
LINX 3.0 - LabVIEW for BeagleBone and Raspberry Pi
LabVIEW VIP package file for the Raspberry Pi Compatible Compiler for LabVIEW
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I'm trying save data in memory on LPC1768. I want to load data when I put on the microcontroller. I expect data don't erase when I put off the machine.
I'm programming in C. I would need a example code in C but I fount a example code in C++ only: http://developer.mbed.org/users/okano/code/IAP/
Thanks everybody. Bye.
You can write data to the flash on the LPC1768 using the IAP commands documented in the user manual in Chapter 32 "Flash memory interface and programming". Specifically, section 32.8 documents the IAP (In Application Programming) commands that let the program running on the device write to flash. Or you can write to the flash using the ISP (In-System Programming) serial port protocol documented starting in section 32.3.
You can use a tool like Flash Magic or lpc21isp to program using the ISP protocol if you don't want to roll your own.
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I wanted to control a toy car, that has two wires for voltage and two other wires for data in and data out.
I wanted to design, to control the car. The Idea is to control it with the mouse movement. If clicked the car has to start, if clicked twice the car has to stop and should move in left and right directions.
How can this be designed ?
In general, you will need a microcontroller attached to the car (e.g. Aurdino) and a communication mechanism between your computer and the microcontroller (e.g. Bluetooth or Wi-Fi).
You computer will send the command to the microcontroller which is wired to the car.
You can take a look at this Bluetooth Controlled Arduino RC Car to get an idea of how to start.