Hi,
I want to send the temperature and humidity sensor data from arduino to RFID Tag, The reader will read the tag id also the data through read commands. The rocky100 rfid tag has spi pins for serial communication that supports communication with external sensor's and microcontrollers. I am new to arduino coding so I need guidance if someone provide me how can I send data from arduino to rocky100 rfid tag IC. The tag ic datasheet link is given below: http://www.farsens.com/wp-content/uploads/2017/12/DS-ROCKY100-V04.pdf
Do I get your intention right? You want to abuse the RFID tag as a communication device from your Arduino (you didn't specify which type you intend to use) to an existing UHF RFID reader. You want to attach an I2C temperature/humidity sensor to that Arduino and the device behind the UHF RFID reader should get that sensor data.
You did notice that the linked RFID tag isn't transmitting in the frequency range commonly used for hobbyist projects, didn't you?
Why did you choose that extremely exotic communication channel?
That's definitely no project for an Arduino beginner!
Try to first get familiar with the IDE, the programming environment and easy circuits like buttons and LEDs. Then go further and try to add I2C sensors to get familiar with that bus. After that you can try to communicate over the SPI bus.
How did you choose the components? For example, why the SHT41A and not the more common SHT21/31?
Basically I want to utilize the RFID tag to send the tag Id along with the sensor's data that's why I choose an RFID tag IC that supports SPI communication with external sensors and microcontrollers. The rocky100 RFID IC is manufactured by Farsens company and they have developed passive sensors using MSP430 microcontroller and communicated the sensor's data to the reader using same RFID tag IC. The only difference is I am using Arduino as a microcontroller and I am looking for help how can I send sensors data to rocky100 RFID tag IC. Later through C1G2 read commands I will access the tag data and ID.
You asked me about what kind I want to use: I am using Arduino Uno as a microcontroller
Rocky100 as an UHF RFID tag
FONKAN FM503 as an UHF RFID reader
SHT4xx as a temp and humidity sensor
No, I didn't studied MSP430 microcontroller because I intended to use Arduino to validate step wise system performance but the company told me their IC can also work with arduino need to create SPI bridge.
Why did you choose an active RFID tag for that communication? It sounds like an overly complex solution for a problem I don't see yet. Please explain why you chose these components, what real live problem you have to solve with them.
The UNO runs on 5V and so all it's IO is at that voltage level. Your RFID chip runs on voltages below 3V so the communication between them must be by level converters.
How do you plan to power the UNO and the RFID chip?