Michael Sapozhnikov / Mbed 2 deprecated RFID-RC522

123

Dependencies:   mbed

main.cpp@3:f781ace811f1, 2022-01-25 (annotated)

Committer:
graf2112
Date:
Tue Jan 25 08:57:42 2022 +0000
Revision:
3:f781ace811f1
Parent:
2:a0c7513fb634 
123

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kirchnet 2:a0c7513fb634 1 //Test of cheap 13.56 Mhz RFID-RC522 module from eBay
kirchnet 2:a0c7513fb634 2 //This code is based on Martin Olejar's MFRC522 library. Minimal changes
kirchnet 2:a0c7513fb634 3 //Adapted for Nucleo STM32 F401RE. Should work on other Nucleos too
kirchnet 2:a0c7513fb634 4
kirchnet 2:a0c7513fb634 5 //Connect as follows:
kirchnet 2:a0c7513fb634 6 //RFID pins -> Nucleo header CN5 (Arduino-compatible header)
kirchnet 2:a0c7513fb634 7 //----------------------------------------
kirchnet 2:a0c7513fb634 8 //RFID IRQ=pin5 -> Not used. Leave open
kirchnet 2:a0c7513fb634 9 //RFID MISO=pin4 -> Nucleo SPI_MISO=PA_6=D12
kirchnet 2:a0c7513fb634 10 //RFID MOSI=pin3 -> Nucleo SPI_MOSI=PA_7=D11
kirchnet 2:a0c7513fb634 11 //RFID SCK=pin2 -> Nucleo SPI_SCK =PA_5=D13
kirchnet 2:a0c7513fb634 12 //RFID SDA=pin1 -> Nucleo SPI_CS =PB_6=D10
kirchnet 2:a0c7513fb634 13 //RFID RST=pin7 -> Nucleo =PA_9=D8
kirchnet 2:a0c7513fb634 14 //3.3V and Gnd to the respective pins
kirchnet 2:a0c7513fb634 15
kirchnet 2:a0c7513fb634 16 #include "mbed.h"
kirchnet 2:a0c7513fb634 17 #include "MFRC522.h"
kirchnet 2:a0c7513fb634 18
kirchnet 2:a0c7513fb634 19 // Nucleo Pin for MFRC522 reset (pick another D pin if you need D8)
graf2112 3:f781ace811f1 20 #define MF_RESET D9
kirchnet 2:a0c7513fb634 21
kirchnet 2:a0c7513fb634 22 DigitalOut LedGreen(LED1);
kirchnet 2:a0c7513fb634 23
kirchnet 2:a0c7513fb634 24 //Serial connection to PC for output
kirchnet 2:a0c7513fb634 25 Serial pc(SERIAL_TX, SERIAL_RX);
kirchnet 2:a0c7513fb634 26
kirchnet 2:a0c7513fb634 27 MFRC522 RfChip (SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS, MF_RESET);
kirchnet 2:a0c7513fb634 28
kirchnet 2:a0c7513fb634 29 int main(void) {
kirchnet 2:a0c7513fb634 30 pc.printf("starting...\n");
kirchnet 2:a0c7513fb634 31
kirchnet 2:a0c7513fb634 32 // Init. RC522 Chip
kirchnet 2:a0c7513fb634 33 RfChip.PCD_Init();
kirchnet 2:a0c7513fb634 34
kirchnet 2:a0c7513fb634 35 while (true) {
kirchnet 2:a0c7513fb634 36 LedGreen = 1;
kirchnet 2:a0c7513fb634 37
kirchnet 2:a0c7513fb634 38 // Look for new cards
kirchnet 2:a0c7513fb634 39 if ( ! RfChip.PICC_IsNewCardPresent())
kirchnet 2:a0c7513fb634 40 {
kirchnet 2:a0c7513fb634 41 wait_ms(500);
kirchnet 2:a0c7513fb634 42 continue;
kirchnet 2:a0c7513fb634 43 }
kirchnet 2:a0c7513fb634 44
kirchnet 2:a0c7513fb634 45 // Select one of the cards
kirchnet 2:a0c7513fb634 46 if ( ! RfChip.PICC_ReadCardSerial())
kirchnet 2:a0c7513fb634 47 {
kirchnet 2:a0c7513fb634 48 wait_ms(500);
kirchnet 2:a0c7513fb634 49 continue;
kirchnet 2:a0c7513fb634 50 }
kirchnet 2:a0c7513fb634 51
kirchnet 2:a0c7513fb634 52 LedGreen = 0;
kirchnet 2:a0c7513fb634 53
kirchnet 2:a0c7513fb634 54 // Print Card UID
kirchnet 2:a0c7513fb634 55 pc.printf("Card UID: ");
kirchnet 2:a0c7513fb634 56 for (uint8_t i = 0; i < RfChip.uid.size; i++)
kirchnet 2:a0c7513fb634 57 {
kirchnet 2:a0c7513fb634 58 pc.printf(" %X02", RfChip.uid.uidByte[i]);
kirchnet 2:a0c7513fb634 59 }
kirchnet 2:a0c7513fb634 60 pc.printf("\n\r");
kirchnet 2:a0c7513fb634 61
kirchnet 2:a0c7513fb634 62 // Print Card type
kirchnet 2:a0c7513fb634 63 uint8_t piccType = RfChip.PICC_GetType(RfChip.uid.sak);
kirchnet 2:a0c7513fb634 64 pc.printf("PICC Type: %s \n\r", RfChip.PICC_GetTypeName(piccType));
kirchnet 2:a0c7513fb634 65 wait_ms(1000);
kirchnet 2:a0c7513fb634 66 }
kirchnet 2:a0c7513fb634 67 }