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Hello there I am a newbie and I am experimenting with contactless card reader.
I have a UIC card reader - 680 - contactless connected to PC using USB and I need to analyze the card.
I want to determine the make of the card waved in front of this contact less card reader.I am using MIFARE cards...
How to implement CAN PROTOCOL and gain expertise in CAN ??
Hello there I am a newbie and I want to gain expertise on CAN(CONTROLLER AREA NETWORK) Protocol ..
I have a ready made Microcontroller board with P89V51RD2BN.
I would like to know whether I can implement in any way and practice as...
Hello there I am trying to implement SPI protocol.I am interfacing 7 segment circuit ( 4 units ) using MAX 7219 and I am not able to get the desired LED output ...please let me know where I am going wrong ...
Thanks
#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int...
Hello there I want to learn SPI in a practical way by interfacing with the 8051 kit.This kit uses P89V51RDBN Mc and I would like to construct a circuit which would help me implement SPI with 2 or more devices...
I would like to learn the basics of SPI protocol by interfacing these device(s) and...
Hello Joeyla ...I have just modified the code for debugging Nack...I included the lcddata('X'); statements in if condition and these values for WRITE operation don't get printed on LCD ...this means the NACK is not set ...we are receiving the ACK properly .... its really strange and frustrating...
Hello Easyrider83 ...this Delay(150) didn't help ...may be I have to be careful about giving/removing Delays at some other places........Here is the program thats working all right ...strange I have almost followed the same logic ..but mine is more generic ..trying to build some libraries...
the Write Protect pin on the readymade CIRCUIT is correct and connected to GND ...I am able to READ/WRITE with other program I found on this forum...But i decided to code my own to understand how things work ....Please check my code for any deceptive errors ....I have also tried googling for...
Yes Mr CKSHIVARAMAN this seems to be quite a logical one .....thanks will keep looking thanks again
---------- Post added at 08:54 ---------- Previous post was at 08:49 ----------
Hello Mr seadolphine2000 ..i think this reply of yours also is possible and seems to be acceptable ..but what if...
Hello there I have almost completed coding interfacing with EEPROM - AT24C04 using I2C protocol,But using this I am able to perform a "READ" operation but not a WRITE.
I am using a similar kind of program( found on this forum ) for interfacing the EEPROM using I2C and this program works...
The AT24C02 - EEPROM has hard wire addressing of 3 bit length. This facilitates interfacing of a maximum of eight (2^3) 24C02 devices to a system thereby, incorporating a maximum 16Kbits memory.
What if I want in the project to connect more than 8 devices ....how can i accomplish this ??
Do I...
Hello there I have resolved it ....on the board there is one variable resistor connected to LCD ..I had to turn it in clockwise-anticlockwise direction to get these codes working ....anyways thanks to you all for the feedback ...thanks again ...:)
Hello there I am trying to display a message on the lcd of this custom designed Microcontroller kit (**broken link removed**) using P89V51RD2N. I have tried to burn the following program but it just doesn't work.Can someone help me with this ..where am I going wrong.??....Nothing is shown up on...
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