Hi,
I have been trying to establish communication with a THM3060 rfid reader and an Arduino Nano. Im using the SPI library but I can not read/write to any of the device registers. According to the documentation the device uses MSBFIRST and MODE0 settings. I have tested various clock speeds from as low as 10kHz up to 4MHz but with no difference.
I have tried the system with 5V, as well as 3.3V. The datasheet recommends 3.3V but the reader circuitry has additional components, which require the input voltage to be 5V (according to the manufacturer). Keep in mind no additional datasheet was available other than the one attached.
Im trying to figure out if the problem is on the software side or the hardware side. The manufacturer has terrible support so I thought I would try this forum as well. I would appreciate any help, as I have been stuck on this for a week now. Thank you!
Here is my code;
#include <SPI.h>
#define SPI_SS 10 //reader pin 8--arduino nano pin D10
// Create an SPISettings object
SPISettings settingsA(100000, MSBFIRST, SPI_MODE0);
void setup() {
Serial.begin(9600);
Serial.println("THM3060 RFID Chip Test\n");
delay(2000);
// Output pins
pinMode(SPI_SS,OUTPUT);
SPI.begin();
}
void loop() {
//-------------------------- Read from register PSEL BEFORE--------------------------
byte result=0xFF;
SPI.beginTransaction(settingsA);
digitalWrite(SPI_SS,LOW); // Start communication
SPI.transfer(0x01); // Read from address
result= SPI.transfer(0x00);
digitalWrite(SPI_SS,HIGH); // End communication
SPI.endTransaction();
Serial.println("READ PSEL before setting");
Serial.println(result);
delay(2000);
//-------------------------------Write to register PSEL----------------
Serial.println("Writing to PSEL");
delay(2000);
SPI.beginTransaction(settingsA);
digitalWrite(SPI_SS,LOW); // Start communication
SPI.transfer(0x81); // Write to address
SPI.transfer(0x20); // Data
digitalWrite(SPI_SS,HIGH); // End communication
SPI.endTransaction();
//-------------------------- Read from register PSEL after --------------------------
Serial.println("READ PSEL after setting");
delay(2000);
SPI.beginTransaction(settingsA);
digitalWrite(SPI_SS,LOW); // Start communication
SPI.transfer(0x01); // Read from address
result= SPI.transfer(0x00);
digitalWrite(SPI_SS,HIGH); // End communication
SPI.endTransaction();
Serial.println(result);
delay(2000);
}
THM3060_chip_document.pdf (518 KB)
thm3060_schematic.pdf (40.7 KB)