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hi…
iam working on rfid reader(mfrc522 has pins vcc3.3v, gnd, IRQ, MISO, MOSI, SDA, SCLK) to get tag id value on my serial port through uart interface serial communication . iam unable get proper tag id value so plz anyone will suggest me how should i go ahead to work properly. i tried all the way unable to find where is the exact problem.
if we try to send commands on serial port to read tag id value, how should can i send it?? or is there any register to set??
from the pins of your RFID reader I can say it is not working in simple serial protocol.
it is working with SPI protocol. you have to use a micro controller having built in SPI interface like AVR ATMega16/32
hi..
it means your saying as module of SPI i have , will not work directly through serial port right??
yes
simple serial port – only 3 connections Tx, Rx and Gnd
SPI is another type of serial port that has 4 connections MOSI, MISO, CLK and RESET
third one is IIC. it is also kind of serial communication with only two connections SDA and SCLK
all three are completely different
programming for each type is completely different
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