SP_RFID Module User Guide

中文

Directory Structure

Directory	Description
doc	Reference documentation
img	Images
script	Maixpy script example
src	C program example based on the standalone sdk

Introduce

The FM17510 used in this module is a highly integrated non-contact reader chip working at 13.56MHz. Supports non-contact reader mode in accordance with ISO/IEC 14443 protocol,

64Byte TRANSCeiver buffer FIFO.

See Module Specification for more information.

Pin figure

Mode of connection

MCU:FUN(IO)	SP_RFID
NC(IO_7)	NPD
SPI:MISO(IO_15)	SO
SPI:SS0(IO_20)	CS
SPI:SCK(IO_21)	SCK
SPI:MOSI(IO_8)	SI
NC(IO_6)	IRQ
2.2~3.6V	3.3V
GND	GND

MCU configuration

IO port configuration

Configure IO port corresponding to MCU as SPI function pin.

• C

  This demo uses a software SPI, so set the corresponding pin to GPIOHS instead of SPI function. See the full code for the implementation.

  fpioa_set_function(RFID_CS_PIN, FUNC_GPIOHS0 + RFID_CS_HSNUM); // RFID_CS_PIN: 20;
  fpioa_set_function(RFID_CK_PIN, FUNC_GPIOHS0 + RFID_CK_HSNUM); // RFID_CK_PIN: 21;
  fpioa_set_function(RFID_MO_PIN, FUNC_GPIOHS0 + RFID_MO_HSNUM); // RFID_MO_PIN: 8;
  fpioa_set_function(RFID_MI_PIN, FUNC_GPIOHS0 + RFID_MI_HSNUM); // RFID_MI_PIN: 15;
  
  gpiohs_set_drive_mode(spi_io_cfg.hs_cs, GPIO_DM_OUTPUT);
  gpiohs_set_drive_mode(spi_io_cfg.hs_clk, GPIO_DM_OUTPUT);
  gpiohs_set_drive_mode(spi_io_cfg.hs_mosi, GPIO_DM_OUTPUT);
  gpiohs_set_drive_mode(spi_io_cfg.hs_miso, GPIO_DM_INPUT);

• MaixPy

  # 20: CS_NUM;
  fm.register(20, fm.fpioa.GPIOHS20, force=True)
  # set gpiohs work mode to output mode
  cs = GPIO(GPIO.GPIOHS20, GPIO.OUT)

SPI initialization

• C

  The software SPI only needs to be configured with the corresponding pins, and there is no initialization of SPI.

• MaixPy

  # RFID_SCK: 21; RFID_SI:8; RFID_SO: 15;
  spi1 = SPI(SPI.SPI1, mode=SPI.MODE_MASTER, baudrate=600 * 1000,
            polarity=0, phase=0, bits=8, firstbit=SPI.MSB, sck=21, mosi=8, miso=15)

Usage

• Process

  1. Initialization
  2. Detected and bind card
  3. Read or write data

• C

  // detected card
  PcdRequest(0x52, type)
  
  // auth and bind...
  
  // read or write 16 bytes data from sector 0x11
  PcdWrite(0x11, w_buf)
  PcdRead(0x11, &r_buf)

• MaixPy

  # Create an object of the class MFRC522
  MIFAREReader = MFRC522(spi1, cs)
  
  # detected and auth, bind...
  
  # read or write 16 bytes data from sector 0x11
  MIFAREReader.MFRC522_Write(0x11, data)
  MIFAREReader.MFRC522_Read(0x11)

Runtime environments

Language	Boards	SDK/Firmware version
C	MaixCube	kendryte-standalone-sdk v0.5.6
MaixPy	MaixCube	maixpy v0.5.1

Result

• C

  

• MaixPy

  

Transplant

The following parameters need to be modified.

• C

    // board_config.h
    #define RFID_CS_PIN (20)
    #define RFID_CK_PIN (21)
    #define RFID_MO_PIN (8)
    #define RFID_MI_PIN (15)
  
    #define RFID_CS_HSNUM (20)
    #define RFID_CK_HSNUM (21)
    #define RFID_MO_HSNUM (8)
    #define RFID_MI_HSNUM (15)

• MaixPy

    ################### config ###################
    CS_NUM = const(20)
    SPI_FREQ_KHZ = const(600)
    SPI_SCK = const(21)
    SPI_MOSI = const(8)
    SPI_MISO = const(15)
    #############################################

LICENSE

See LICENSE file.

Other information

Version	Editor	Date
v1.0	vamoosebbf	2020.12.2