--- /dev/null
+/*
+ * Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
+ * Copyright (c) 2014 Intel Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <iostream>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "sm130.h"
+
+using namespace upm;
+
+struct SM130Exception : public std::exception {
+ std::string message;
+ SM130Exception (std::string msg) : message (msg) { }
+ ~SM130Exception () throw () { }
+ const char* what() const throw () { return message.c_str(); }
+};
+
+SM130::SM130 (int bus, int devAddr, int rst, int dready) {
+ mraa_result_t error = MRAA_SUCCESS;
+
+ this->m_name = "SM130";
+
+ this->m_i2cAddr = devAddr;
+ this->m_bus = bus;
+
+ this->m_i2Ctx = mraa_i2c_init(this->m_bus);
+
+ mraa_result_t ret = mraa_i2c_address(this->m_i2Ctx, this->m_i2cAddr);
+ if (ret != MRAA_SUCCESS) {
+ throw SM130Exception ("Couldn't initilize I2C.");
+ }
+
+ this->m_resetPinCtx = mraa_gpio_init (rst);
+ if (m_resetPinCtx == NULL) {
+ throw SM130Exception ("Couldn't initilize RESET pin.");
+ }
+
+ this->m_dataReadyPinCtx = mraa_gpio_init (dready);
+ if (m_dataReadyPinCtx == NULL) {
+ throw SM130Exception ("Couldn't initilize DATA READY pin.");
+ }
+
+ error = mraa_gpio_dir (this->m_resetPinCtx, MRAA_GPIO_OUT);
+ if (error != MRAA_SUCCESS) {
+ throw SM130Exception ("Couldn't set direction for RESET pin.");
+ }
+
+ error = mraa_gpio_dir (this->m_dataReadyPinCtx, MRAA_GPIO_OUT);
+ if (error != MRAA_SUCCESS) {
+ throw SM130Exception ("Couldn't set direction for DATA READY pin.");
+ }
+}
+
+SM130::~SM130 () {
+ mraa_result_t error = MRAA_SUCCESS;
+
+ error = mraa_i2c_stop(this->m_i2Ctx);
+ if (error != MRAA_SUCCESS) {
+ mraa_result_print(error);
+ }
+ error = mraa_gpio_close (this->m_resetPinCtx);
+ if (error != MRAA_SUCCESS) {
+ mraa_result_print(error);
+ }
+ error = mraa_gpio_close (this->m_dataReadyPinCtx);
+ if (error != MRAA_SUCCESS) {
+ mraa_result_print(error);
+ }
+}
+
+const char*
+SM130::getFirmwareVersion () {
+ // Send VERSION command and retry a few times if no response
+ for (uint8_t n = 0; n < 10; n++) {
+ sendCommand (CMD_VERSION);
+ if (available() && getCommand() == CMD_VERSION)
+ // return versionString;
+ usleep(100 * 1000);
+ }
+
+ return 0;
+}
+
+uint8_t
+SM130::available () {
+ // If in SEEK mode and using DREADY pin, check the status
+ if (this->m_LastCMD == CMD_SEEK_TAG) {
+ if (!mraa_gpio_read(this->m_dataReadyPinCtx)) {
+ return false;
+ }
+ }
+
+ // Set the maximum length of the expected response packet
+ uint8_t len;
+ switch(this->m_LastCMD) {
+ case CMD_ANTENNA_POWER:
+ case CMD_AUTHENTICATE:
+ case CMD_DEC_VALUE:
+ case CMD_INC_VALUE:
+ case CMD_WRITE_KEY:
+ case CMD_HALT_TAG:
+ case CMD_SLEEP:
+ len = 4;
+ break;
+ case CMD_WRITE4:
+ case CMD_WRITE_VALUE:
+ case CMD_READ_VALUE:
+ len = 8;
+ case CMD_SEEK_TAG:
+ case CMD_SELECT_TAG:
+ len = 11;
+ break;
+ default:
+ len = SIZE_PACKET;
+ }
+
+ // If valid data received, process the response packet
+ if (this->i2cRecievePacket(len) > 0) {
+ // Init response variables
+ this->m_TagType = this->m_TagLength = *this->m_TagString = 0;
+
+ // If packet length is 2, the command failed. Set error code.
+ errorCode = this->getPacketLength () < 3 ? this->m_Data[2] : 0;
+
+ // Process command response
+ switch (this->getCommand ()) {
+ case CMD_RESET:
+ case CMD_VERSION:
+ // RESET and VERSION commands produce the firmware version
+ len = std::min ((unsigned int) getPacketLength (), sizeof (this->m_Version)) - 1;
+ memcpy(this->m_Version, this->m_Data + 2, len);
+ this->m_Version[len] = 0;
+ break;
+
+ case CMD_SEEK_TAG:
+ case CMD_SELECT_TAG:
+ // If no error, get tag number
+ if(errorCode == 0 && this->getPacketLength () >= 6)
+ {
+ this->m_TagLength = this->getPacketLength () - 2;
+ this->m_TagType = this->m_Data[2];
+ memcpy(this->m_TagNumber, this->m_Data + 3, this->m_TagLength);
+ this->arrayToHex (this->m_TagString, this->m_TagNumber, this->m_TagLength);
+ }
+ break;
+
+ case CMD_AUTHENTICATE:
+ break;
+
+ case CMD_READ16:
+ break;
+
+ case CMD_WRITE16:
+ case CMD_WRITE4:
+ break;
+
+ case CMD_ANTENNA_POWER:
+ errorCode = 0;
+ antennaPower = this->m_Data[2];
+ break;
+
+ case CMD_SLEEP:
+ // If in SLEEP mode, no data is available
+ return false;
+ }
+
+ // Data available
+ return true;
+ }
+ // No data available
+ return false;
+}
+
+uint16_t
+SM130::i2cRecievePacket (uint32_t len) {
+ int readByte = 0;
+
+ mraa_i2c_address(this->m_i2Ctx, this->m_i2cAddr);
+ readByte = mraa_i2c_read(this->m_i2Ctx, this->m_Data, len);
+
+ if (readByte > 0) {
+ // verify checksum if length > 0 and <= SIZE_PAYLOAD
+ if (this->m_Data[0] > 0 && this->m_Data[0] <= SIZE_PAYLOAD)
+ {
+ uint8_t i, sum;
+ for (i = 0, sum = 0; i <= this->m_Data[0]; i++) {
+ sum += this->m_Data[i];
+ }
+ // return with length of response, or -1 if invalid checksum
+ return sum == this->m_Data[i] ? this->m_Data[0] : -1;
+ }
+ }
+
+ return readByte;
+}
+
+void
+SM130::arrayToHex (char *s, uint8_t array[], uint8_t len) {
+ for (uint8_t i = 0; i < len; i++) {
+ *s++ = toHex(array[i] >> 4);
+ *s++ = toHex(array[i]);
+ }
+
+ *s = 0;
+}
+
+char
+SM130::toHex (uint8_t b) {
+ b = b & 0x0f;
+
+ return b < 10 ? b + '0' : b + 'A' - 10;
+}
+
+mraa_result_t
+SM130::i2cTransmitPacket (uint32_t len) {
+ mraa_result_t error = MRAA_SUCCESS;
+ uint8_t sum = 0;
+
+ // Save last command
+ this->m_LastCMD = this->m_Data[0];
+
+ // calculate the sum check
+ for (int i = 0; i < len; i++) {
+ sum += this->m_Data[i];
+ }
+
+ // placing the sum check to the last byte of the packet
+ this->m_Data[len + 1] = sum;
+
+ error = mraa_i2c_address (this->m_i2Ctx, this->m_i2cAddr);
+ error = mraa_i2c_write (this->m_i2Ctx, this->m_Data, len + 1);
+
+ return error;
+}
+
+mraa_result_t
+SM130::sendCommand (uint8_t cmd) {
+ this->m_Data[0] = 1;
+ this->m_Data[1] = cmd;
+ this->i2cTransmitPacket(2);
+}
+
--- /dev/null
+/*
+ * Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
+ * Copyright (c) 2014 Intel Corporation.
+ *
+ * Based on SM130 library developed by Marc Boon <http://www.marcboon.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#pragma once
+
+#include <string>
+#include <mraa/aio.h>
+#include <mraa/gpio.h>
+#include <mraa/i2c.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#define SIZE_PAYLOAD 18 // maximum payload size of I2C packet
+#define SIZE_PACKET (SIZE_PAYLOAD + 2) // total I2C packet size, including length uint8_t and checksum
+
+#define HIGH 1
+#define LOW 0
+
+namespace upm {
+
+/**
+ * @brief C++ API for SM130 RFID reader module
+ *
+ * This file defines the SM130 C++ interface for libsm130
+ *
+ */
+class SM130 {
+
+ uint8_t m_Data[SIZE_PACKET]; //!< packet data
+ char m_Version[8]; //!< version string
+ uint8_t m_TagNumber[7]; //!< tag number as uint8_t array
+ uint8_t m_TagLength; //!< length of tag number in uint8_ts (4 or 7)
+ char m_TagString[15]; //!< tag number as hex string
+ uint8_t m_TagType; //!< type of tag
+ char errorCode; //!< error code from some commands
+ uint8_t antennaPower; //!< antenna power level
+ uint8_t m_LastCMD; //!< last sent command
+
+ public:
+ static const uint8_t MIFARE_ULTRALIGHT = 1;
+ static const uint8_t MIFARE_1K = 2;
+ static const uint8_t MIFARE_4K = 3;
+
+ static const uint8_t CMD_RESET = 0x80;
+ static const uint8_t CMD_VERSION = 0x81;
+ static const uint8_t CMD_SEEK_TAG = 0x82;
+ static const uint8_t CMD_SELECT_TAG = 0x83;
+ static const uint8_t CMD_AUTHENTICATE = 0x85;
+ static const uint8_t CMD_READ16 = 0x86;
+ static const uint8_t CMD_READ_VALUE = 0x87;
+ static const uint8_t CMD_WRITE16 = 0x89;
+ static const uint8_t CMD_WRITE_VALUE = 0x8a;
+ static const uint8_t CMD_WRITE4 = 0x8b;
+ static const uint8_t CMD_WRITE_KEY = 0x8c;
+ static const uint8_t CMD_INC_VALUE = 0x8d;
+ static const uint8_t CMD_DEC_VALUE = 0x8e;
+ static const uint8_t CMD_ANTENNA_POWER = 0x90;
+ static const uint8_t CMD_READ_PORT = 0x91;
+ static const uint8_t CMD_WRITE_PORT = 0x92;
+ static const uint8_t CMD_HALT_TAG = 0x93;
+ static const uint8_t CMD_SET_BAUD = 0x94;
+ static const uint8_t CMD_SLEEP = 0x96;
+
+ /**
+ * Instanciates a SM130 object
+ *
+ * @param di data pin
+ * @param dcki clock pin
+ */
+ SM130 (int bus, int devAddr, int rst, int dready);
+
+ /**
+ * SM130 object destructor
+ */
+ ~SM130 ();
+
+ /**
+ * Get the firmware version string.
+ */
+ const char* getFirmwareVersion ();
+
+ /**
+ * Checks for availability of a valid response packet.
+ *
+ * This function should always be called and return true prior to using results
+ * of a command.
+ *
+ * @returns true if a valid response packet is available
+ */
+ uint8_t available ();
+
+ /**
+ * Returns the packet length, excluding checksum
+ */
+ uint8_t getPacketLength () { return this->m_Data[0]; };
+
+ /**
+ * Returns the last executed command
+ */
+ uint8_t getCommand () { return this->m_Data[1]; };
+
+ /**
+ * Return name of the component
+ */
+ std::string name()
+ {
+ return m_name;
+ }
+ private:
+ std::string m_name;
+ mraa_gpio_context m_resetPinCtx;
+ mraa_gpio_context m_dataReadyPinCtx;
+
+ int m_i2cAddr;
+ int m_bus;
+ mraa_i2c_context m_i2Ctx;
+
+ void arrayToHex (char *s, uint8_t array[], uint8_t len);
+ char toHex (uint8_t b);
+
+ uint16_t i2cRecievePacket (uint32_t len);
+ mraa_result_t i2cTransmitPacket (uint32_t len);
+ mraa_result_t sendCommand (uint8_t cmd);
+};
+
+}
projects / contrib / upm.git / commitdiff