RFID - CRC parameters, how to calculate them?

Projects Networking, Protocols, and Devices
17

Hello, El_Supremo.

I'm having a problem with the same reader.

This is the code I'm implementing

#include <SoftwareSerial.h>

SoftwareSerial antenna(8, 9);

unsigned char data;
const int com_len = 9;
unsigned char command[com_len] = { 0x0a, 0x00, 0x35, 0x01, 0x06, 0x04, 0x00, 0x01, 0x05 };

void setup() { 
  Serial.begin(115200);
  Serial.println("Starting");
  antenna.begin(57600);
  delay(100);
  Serial.println(crc_cal(command,com_len),HEX);
  sendCommand();
}

void sendCommand() {
  Serial.println("Sending...");

  antenna.write(0x0a); //Length
  antenna.write(byte(0x00)); //Address
  antenna.write(0x35); //Command
  antenna.write(0x01); //Active mode
  antenna.write(0x06); //RS232 Output
  antenna.write(0x04); //Memory intentory
  antenna.write(byte(0x00)); //First address
  antenna.write(0x01); //Word number
  antenna.write(byte(0x05)); //Tag time
  antenna.write(0xEB); //CRC-LSB
  antenna.write(0x8F); //CRC-MSB
}

void loop() { 
 while(antenna.available()) {
  data = antenna.read();
  Serial.print(data, HEX);
  Serial.print(" ");
 }

}

But the respond from the reader is not the one I want:
FC FC F8 FE F8 FC F8 F8 F8 FC FF

Also, according to the command I'm sending (Page 35-36) I tried to put the buzzer off to see if the command was right but no good results.

So perhaps I'm missing something I'm not aware of.

Mind helping out?

Thanks