2 * Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
3 * Copyright (c) 2014 Intel Corporation.
5 * Based on SM130 library developed by Marc Boon <http://www.marcboon.com>
7 * Permission is hereby granted, free of charge, to any person obtaining
8 * a copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sublicense, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
15 * The above copyright notice and this permission notice shall be
16 * included in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
22 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
30 #include <mraa/gpio.h>
35 #define SIZE_PAYLOAD 18 // maximum payload size of I2C packet
36 #define SIZE_PACKET (SIZE_PAYLOAD + 2) // total I2C packet size, including length uint8_t and checksum
44 * @brief C++ API for SM130 RFID reader module
46 * This file defines the SM130 C++ interface for libsm130
51 uint8_t m_Data[SIZE_PACKET]; //!< packet data
52 char m_Version[8]; //!< version string
53 uint8_t m_TagNumber[7]; //!< tag number as uint8_t array
54 uint8_t m_TagLength; //!< length of tag number in uint8_ts (4 or 7)
55 char m_TagString[15]; //!< tag number as hex string
56 uint8_t m_TagType; //!< type of tag
57 char errorCode; //!< error code from some commands
58 uint8_t antennaPower; //!< antenna power level
59 uint8_t m_LastCMD; //!< last sent command
62 static const uint8_t MIFARE_ULTRALIGHT = 1;
63 static const uint8_t MIFARE_1K = 2;
64 static const uint8_t MIFARE_4K = 3;
66 static const uint8_t CMD_RESET = 0x80;
67 static const uint8_t CMD_VERSION = 0x81;
68 static const uint8_t CMD_SEEK_TAG = 0x82;
69 static const uint8_t CMD_SELECT_TAG = 0x83;
70 static const uint8_t CMD_AUTHENTICATE = 0x85;
71 static const uint8_t CMD_READ16 = 0x86;
72 static const uint8_t CMD_READ_VALUE = 0x87;
73 static const uint8_t CMD_WRITE16 = 0x89;
74 static const uint8_t CMD_WRITE_VALUE = 0x8a;
75 static const uint8_t CMD_WRITE4 = 0x8b;
76 static const uint8_t CMD_WRITE_KEY = 0x8c;
77 static const uint8_t CMD_INC_VALUE = 0x8d;
78 static const uint8_t CMD_DEC_VALUE = 0x8e;
79 static const uint8_t CMD_ANTENNA_POWER = 0x90;
80 static const uint8_t CMD_READ_PORT = 0x91;
81 static const uint8_t CMD_WRITE_PORT = 0x92;
82 static const uint8_t CMD_HALT_TAG = 0x93;
83 static const uint8_t CMD_SET_BAUD = 0x94;
84 static const uint8_t CMD_SLEEP = 0x96;
87 * Instanciates a SM130 object
90 * @param dcki clock pin
92 SM130 (int bus, int devAddr, int rst, int dready);
95 * SM130 object destructor
100 * Get the firmware version string.
102 const char* getFirmwareVersion ();
105 * Checks for availability of a valid response packet.
107 * This function should always be called and return true prior to using results
110 * @returns true if a valid response packet is available
112 uint8_t available ();
115 * Returns the packet length, excluding checksum
117 uint8_t getPacketLength () { return this->m_Data[0]; };
120 * Returns the last executed command
122 uint8_t getCommand () { return this->m_Data[1]; };
125 * Return name of the component
133 mraa_gpio_context m_resetPinCtx;
134 mraa_gpio_context m_dataReadyPinCtx;
138 mraa_i2c_context m_i2Ctx;
140 void arrayToHex (char *s, uint8_t array[], uint8_t len);
141 char toHex (uint8_t b);
143 uint16_t i2cRecievePacket (uint32_t len);
144 mraa_result_t i2cTransmitPacket (uint32_t len);
145 mraa_result_t sendCommand (uint8_t cmd);