Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
I Know 1 and 2..The device is MFRC522 with address 0x50 and I want to write to FiFO register of address 0x09 now what byte I should send It is not given in datasheet..My purpose is to read the card data through rfid..and the data consist of 12 number..So are the data bytes just random or are the...
Here,after sending register address of Mfrc522 what data bytes are send (I mean are they random values or they are specified) and what is upto n bytes..does it mean I have 2 send 2 8 bytes because the rc522 card consists of 12 bit number.
In I2c communication, What dataype does slave sends to master and prints on 16x2 lcd. Do we have to convert the data into integer or BCD and send to lcd or we can directly send as string?
Hi,
I am doing project on RFID MFRC522. I have done read and write cycle according to datasheet page 20. I have send device address, and Fifo register address(0x09 datasheet page 36) and 8 bit data. I have done according to cycle But I cannot read the data. I dont know where I am getting ERROR...
What does data[7:0] mean??
Here , What does DATA[7:0] mean, Do I have to send just (char DATA) to i2c_write function or it should be like (char DATA =0x00).
Thank you so much..You understood this is what I needed..I was struggling on I2C1_wr(write _address) I didnot know what register I have to use in this function even when I looked at the datasheet. Now I got it.
Yes..that's why I want to know the register address to write the data.. Can you please write the register address. This has me stuck for days. And in the datasheet there is nowhere register address is mentioned or I failed to understand it. Only the device address is given as I have written above.
Re: How to find the register address of a slave device
Thankyou for your response.. It has the address of 0101 000(0x50) so does it mean 0x50+0 is used register address. or are you refering to FIF0 dataregister in table 20.
Hi,
I am doing a project on RFID rc522 on avr atmega32 using I2c . I was able to find the device address(0101b, the rest 3 bits are configured by the user) that give slave address of 0x50 but now how do I find the specific register address to write and read from. I dont know where should I look...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
