AppNearMe / MicroNFCBoardAPI

NFC API for mbed using the MicroNFCBoard as a peripheral

Dependents:   MicroNFCBoardAPI_P2P_Client MicroNFCBoardAPI_Blink MicroNFCBoardAPI_Tag_Emulator MicroNFCBoardAPI_Tag_Reader ... more

transport.cpp@0:07fa9c0dd549, 2015-04-24 (annotated)

Committer:
AppNearMe
Date:
Fri Apr 24 12:57:23 2015 +0000
Revision:
0:07fa9c0dd549
Child:
1:1d246e0872c6
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AppNearMe 0:07fa9c0dd549 1 /**
AppNearMe 0:07fa9c0dd549 2 * \file transport.cpp
AppNearMe 0:07fa9c0dd549 3 * \copyright Copyright (c) AppNearMe Ltd 2015
AppNearMe 0:07fa9c0dd549 4 * \author Donatien Garnier
AppNearMe 0:07fa9c0dd549 5 */
AppNearMe 0:07fa9c0dd549 6
AppNearMe 0:07fa9c0dd549 7 #include "transport.h"
AppNearMe 0:07fa9c0dd549 8
AppNearMe 0:07fa9c0dd549 9
AppNearMe 0:07fa9c0dd549 10 //MSB first
AppNearMe 0:07fa9c0dd549 11 #define WRITE_UINT32( addr, val ) do{ *(((uint8_t*)(addr)) + 0) = ((val) >> 24 ) & 0xFF; \
AppNearMe 0:07fa9c0dd549 12 *(((uint8_t*)(addr)) + 1) = ((val) >> 16 ) & 0xFF; \
AppNearMe 0:07fa9c0dd549 13 *(((uint8_t*)(addr)) + 2) = ((val) >> 8 ) & 0xFF; \
AppNearMe 0:07fa9c0dd549 14 *(((uint8_t*)(addr)) + 3) = ((val) >> 0 ) & 0xFF; } while(0)
AppNearMe 0:07fa9c0dd549 15 #define WRITE_UINT16( addr, val ) do{ *(((uint8_t*)(addr)) + 0) = ((val) >> 8 ) & 0xFF; \
AppNearMe 0:07fa9c0dd549 16 *(((uint8_t*)(addr)) + 1) = ((val) >> 0 ) & 0xFF; } while(0)
AppNearMe 0:07fa9c0dd549 17
AppNearMe 0:07fa9c0dd549 18 //MSB first
AppNearMe 0:07fa9c0dd549 19 #define READ_UINT32( addr, val ) do{ val = (*(((uint8_t*)(addr)) + 0) << 24 ) \
AppNearMe 0:07fa9c0dd549 20 | (*(((uint8_t*)(addr)) + 1) << 16 ) \
AppNearMe 0:07fa9c0dd549 21 | (*(((uint8_t*)(addr)) + 2) << 8 ) \
AppNearMe 0:07fa9c0dd549 22 | (*(((uint8_t*)(addr)) + 3) << 0 ); } while(0)
AppNearMe 0:07fa9c0dd549 23 #define READ_UINT16( addr, val ) do{ val = (*(((uint8_t*)(addr)) + 0) << 8 ) \
AppNearMe 0:07fa9c0dd549 24 | (*(((uint8_t*)(addr)) + 1) << 0 ); } while(0)
AppNearMe 0:07fa9c0dd549 25
AppNearMe 0:07fa9c0dd549 26
AppNearMe 0:07fa9c0dd549 27 Transport::Transport(PinName mosi, PinName miso, PinName sck, PinName cs, PinName irq) : \
AppNearMe 0:07fa9c0dd549 28 _cs(cs), _spi(mosi, miso, sck), _int(irq)
AppNearMe 0:07fa9c0dd549 29 {
AppNearMe 0:07fa9c0dd549 30 }
AppNearMe 0:07fa9c0dd549 31
AppNearMe 0:07fa9c0dd549 32 void Transport::init()
AppNearMe 0:07fa9c0dd549 33 {
AppNearMe 0:07fa9c0dd549 34 _spi.format(8, 1);
AppNearMe 0:07fa9c0dd549 35 _spi.frequency(100000);
AppNearMe 0:07fa9c0dd549 36 _cs = 1;
AppNearMe 0:07fa9c0dd549 37
AppNearMe 0:07fa9c0dd549 38 for(int i = 0; i < 64; i++)
AppNearMe 0:07fa9c0dd549 39 {
AppNearMe 0:07fa9c0dd549 40 _cs = 0;
AppNearMe 0:07fa9c0dd549 41 _spi.write(0);
AppNearMe 0:07fa9c0dd549 42 _cs = 1;
AppNearMe 0:07fa9c0dd549 43 }
AppNearMe 0:07fa9c0dd549 44 }
AppNearMe 0:07fa9c0dd549 45
AppNearMe 0:07fa9c0dd549 46 void Transport::reset()
AppNearMe 0:07fa9c0dd549 47 {
AppNearMe 0:07fa9c0dd549 48 uint8_t out[] = {0};
AppNearMe 0:07fa9c0dd549 49 command(Transport::RESET, out, sizeof(out), NULL, 0);
AppNearMe 0:07fa9c0dd549 50 }
AppNearMe 0:07fa9c0dd549 51
AppNearMe 0:07fa9c0dd549 52 bool Transport::statusChanged()
AppNearMe 0:07fa9c0dd549 53 {
AppNearMe 0:07fa9c0dd549 54 return (_int.read() != 0);
AppNearMe 0:07fa9c0dd549 55 }
AppNearMe 0:07fa9c0dd549 56
AppNearMe 0:07fa9c0dd549 57 uint32_t Transport::status()
AppNearMe 0:07fa9c0dd549 58 {
AppNearMe 0:07fa9c0dd549 59 uint8_t in[4];
AppNearMe 0:07fa9c0dd549 60 command(Transport::GET_STATUS, NULL, 0, in, sizeof(in));
AppNearMe 0:07fa9c0dd549 61
AppNearMe 0:07fa9c0dd549 62 uint32_t status;
AppNearMe 0:07fa9c0dd549 63 READ_UINT32(&in[0], status);
AppNearMe 0:07fa9c0dd549 64 return status;
AppNearMe 0:07fa9c0dd549 65 }
AppNearMe 0:07fa9c0dd549 66
AppNearMe 0:07fa9c0dd549 67 void Transport::nfcPoll(bool enable)
AppNearMe 0:07fa9c0dd549 68 {
AppNearMe 0:07fa9c0dd549 69 uint8_t out[] = {enable?1:0};
AppNearMe 0:07fa9c0dd549 70 command(Transport::NFC_POLL, out, sizeof(out), NULL, 0);
AppNearMe 0:07fa9c0dd549 71 }
AppNearMe 0:07fa9c0dd549 72
AppNearMe 0:07fa9c0dd549 73 void Transport::nfcOperation(bool readOp, bool writeOp)
AppNearMe 0:07fa9c0dd549 74 {
AppNearMe 0:07fa9c0dd549 75 uint8_t out[1];
AppNearMe 0:07fa9c0dd549 76 if(readOp)
AppNearMe 0:07fa9c0dd549 77 {
AppNearMe 0:07fa9c0dd549 78 out[0] = 1;
AppNearMe 0:07fa9c0dd549 79 }
AppNearMe 0:07fa9c0dd549 80 else if(writeOp)
AppNearMe 0:07fa9c0dd549 81 {
AppNearMe 0:07fa9c0dd549 82 out[0] = 2;
AppNearMe 0:07fa9c0dd549 83 }
AppNearMe 0:07fa9c0dd549 84 else
AppNearMe 0:07fa9c0dd549 85 {
AppNearMe 0:07fa9c0dd549 86 out[0] = 0;
AppNearMe 0:07fa9c0dd549 87 }
AppNearMe 0:07fa9c0dd549 88 command(Transport::NFC_OPERATION, out, sizeof(out), NULL, 0);
AppNearMe 0:07fa9c0dd549 89 }
AppNearMe 0:07fa9c0dd549 90
AppNearMe 0:07fa9c0dd549 91 void Transport::nfcGetInfoIsoA(uint8_t* atqa, uint8_t* sak, uint8_t* uid, size_t* pUidLength)
AppNearMe 0:07fa9c0dd549 92 {
AppNearMe 0:07fa9c0dd549 93 uint8_t in[2 + 1 + 1 + 10];
AppNearMe 0:07fa9c0dd549 94 command(Transport::NFC_GET_INFO, NULL, 0, in, sizeof(in));
AppNearMe 0:07fa9c0dd549 95 memcpy(atqa, &in[0], 2);
AppNearMe 0:07fa9c0dd549 96 *sak = in[2];
AppNearMe 0:07fa9c0dd549 97 *pUidLength = in[3];
AppNearMe 0:07fa9c0dd549 98 memcpy(uid, &in[4], *pUidLength);
AppNearMe 0:07fa9c0dd549 99 }
AppNearMe 0:07fa9c0dd549 100
AppNearMe 0:07fa9c0dd549 101 void Transport::nfcGetMessageInfo(size_t* pRecordCount)
AppNearMe 0:07fa9c0dd549 102 {
AppNearMe 0:07fa9c0dd549 103 uint8_t in[2];
AppNearMe 0:07fa9c0dd549 104 command(Transport::NFC_GET_MESSAGE_INFO, NULL, 0, in, sizeof(in));
AppNearMe 0:07fa9c0dd549 105 READ_UINT16(&in[0], *pRecordCount);
AppNearMe 0:07fa9c0dd549 106 }
AppNearMe 0:07fa9c0dd549 107
AppNearMe 0:07fa9c0dd549 108 void Transport::nfcSetMessageInfo(size_t recordCount)
AppNearMe 0:07fa9c0dd549 109 {
AppNearMe 0:07fa9c0dd549 110 uint8_t out[2];
AppNearMe 0:07fa9c0dd549 111 WRITE_UINT16(&out[0], recordCount);
AppNearMe 0:07fa9c0dd549 112 command(Transport::NFC_SET_MESSAGE_INFO, out, sizeof(out), NULL, 0);
AppNearMe 0:07fa9c0dd549 113 }
AppNearMe 0:07fa9c0dd549 114
AppNearMe 0:07fa9c0dd549 115 void Transport::nfcGetRecordInfo(size_t recordNumber, uint16_t* pType, uint16_t* info, size_t infoCount)
AppNearMe 0:07fa9c0dd549 116 {
AppNearMe 0:07fa9c0dd549 117 uint8_t out[2];
AppNearMe 0:07fa9c0dd549 118 uint8_t in[2+2*infoCount];
AppNearMe 0:07fa9c0dd549 119 WRITE_UINT16(&out[0], recordNumber);
AppNearMe 0:07fa9c0dd549 120 command(Transport::NFC_GET_RECORD_INFO, out, sizeof(out), in, sizeof(in));
AppNearMe 0:07fa9c0dd549 121 READ_UINT16(&in[0], *pType);
AppNearMe 0:07fa9c0dd549 122 for(int i = 0; i < infoCount; i++)
AppNearMe 0:07fa9c0dd549 123 {
AppNearMe 0:07fa9c0dd549 124 READ_UINT16(&in[2+2*i], info[i]);
AppNearMe 0:07fa9c0dd549 125 }
AppNearMe 0:07fa9c0dd549 126 }
AppNearMe 0:07fa9c0dd549 127
AppNearMe 0:07fa9c0dd549 128 void Transport::nfcSetRecordInfo(size_t recordNumber, uint16_t type, uint16_t* info, size_t infoCount)
AppNearMe 0:07fa9c0dd549 129 {
AppNearMe 0:07fa9c0dd549 130 uint8_t out[2+2+2*infoCount];
AppNearMe 0:07fa9c0dd549 131 WRITE_UINT16(&out[0], recordNumber);
AppNearMe 0:07fa9c0dd549 132 WRITE_UINT16(&out[2], type);
AppNearMe 0:07fa9c0dd549 133 for(int i = 0; i < infoCount; i++)
AppNearMe 0:07fa9c0dd549 134 {
AppNearMe 0:07fa9c0dd549 135 WRITE_UINT16(&out[2+2+2*i], info[i]);
AppNearMe 0:07fa9c0dd549 136 }
AppNearMe 0:07fa9c0dd549 137 command(Transport::NFC_SET_RECORD_INFO, out, sizeof(out), NULL, 0);
AppNearMe 0:07fa9c0dd549 138 }
AppNearMe 0:07fa9c0dd549 139
AppNearMe 0:07fa9c0dd549 140 void Transport::nfcGetRecordData(size_t recordNumber, size_t item, size_t offset, uint8_t* data, size_t length)
AppNearMe 0:07fa9c0dd549 141 {
AppNearMe 0:07fa9c0dd549 142 uint8_t out[7];
AppNearMe 0:07fa9c0dd549 143 WRITE_UINT16(&out[0], recordNumber);
AppNearMe 0:07fa9c0dd549 144 out[2] = item;
AppNearMe 0:07fa9c0dd549 145 WRITE_UINT16(&out[3], offset);
AppNearMe 0:07fa9c0dd549 146 WRITE_UINT16(&out[5], length);
AppNearMe 0:07fa9c0dd549 147 command(Transport::NFC_GET_RECORD_DATA, out, sizeof(out), data, length);
AppNearMe 0:07fa9c0dd549 148 }
AppNearMe 0:07fa9c0dd549 149
AppNearMe 0:07fa9c0dd549 150 void Transport::nfcSetRecordData(size_t recordNumber, size_t item, size_t offset, uint8_t* data, size_t length)
AppNearMe 0:07fa9c0dd549 151 {
AppNearMe 0:07fa9c0dd549 152 uint8_t out[7+length];
AppNearMe 0:07fa9c0dd549 153 WRITE_UINT16(&out[0], recordNumber);
AppNearMe 0:07fa9c0dd549 154 out[2] = item;
AppNearMe 0:07fa9c0dd549 155 WRITE_UINT16(&out[3], offset);
AppNearMe 0:07fa9c0dd549 156 WRITE_UINT16(&out[5], length);
AppNearMe 0:07fa9c0dd549 157 memcpy(&out[7], data, length);
AppNearMe 0:07fa9c0dd549 158 command(Transport::NFC_SET_RECORD_DATA, out, sizeof(out), NULL, 0);
AppNearMe 0:07fa9c0dd549 159 }
AppNearMe 0:07fa9c0dd549 160
AppNearMe 0:07fa9c0dd549 161 void Transport::nfcPrepareMessage(bool lock, bool generate)
AppNearMe 0:07fa9c0dd549 162 {
AppNearMe 0:07fa9c0dd549 163 uint8_t out[1];
AppNearMe 0:07fa9c0dd549 164 if(lock)
AppNearMe 0:07fa9c0dd549 165 {
AppNearMe 0:07fa9c0dd549 166 out[0] = 1;
AppNearMe 0:07fa9c0dd549 167 }
AppNearMe 0:07fa9c0dd549 168 else if(generate)
AppNearMe 0:07fa9c0dd549 169 {
AppNearMe 0:07fa9c0dd549 170 out[0] = 2;
AppNearMe 0:07fa9c0dd549 171 }
AppNearMe 0:07fa9c0dd549 172 else
AppNearMe 0:07fa9c0dd549 173 {
AppNearMe 0:07fa9c0dd549 174 out[0] = 0;
AppNearMe 0:07fa9c0dd549 175 }
AppNearMe 0:07fa9c0dd549 176 command(Transport::NFC_POLL, out, sizeof(out), NULL, 0);
AppNearMe 0:07fa9c0dd549 177 }
AppNearMe 0:07fa9c0dd549 178
AppNearMe 0:07fa9c0dd549 179 void Transport::nfcDecodePrefix(uint8_t prefix, char* data, size_t* pDataLength)
AppNearMe 0:07fa9c0dd549 180 {
AppNearMe 0:07fa9c0dd549 181 uint8_t out[] = { prefix };
AppNearMe 0:07fa9c0dd549 182 uint8_t in[2 + 36]; //max prefix length is 36
AppNearMe 0:07fa9c0dd549 183 command(Transport::NFC_DECODE_PREFIX, out, sizeof(out), in, sizeof(in));
AppNearMe 0:07fa9c0dd549 184 size_t length;
AppNearMe 0:07fa9c0dd549 185 READ_UINT16(&in[0], length);
AppNearMe 0:07fa9c0dd549 186 if(length < *pDataLength)
AppNearMe 0:07fa9c0dd549 187 {
AppNearMe 0:07fa9c0dd549 188 *pDataLength = length;
AppNearMe 0:07fa9c0dd549 189 }
AppNearMe 0:07fa9c0dd549 190 memcpy(data, &in[2], *pDataLength);
AppNearMe 0:07fa9c0dd549 191 }
AppNearMe 0:07fa9c0dd549 192
AppNearMe 0:07fa9c0dd549 193 void Transport::nfcEncodePrefix(uint8_t* pPrefix, char* data, size_t dataLength)
AppNearMe 0:07fa9c0dd549 194 {
AppNearMe 0:07fa9c0dd549 195 uint8_t out[2 + dataLength];
AppNearMe 0:07fa9c0dd549 196 uint8_t in[1];
AppNearMe 0:07fa9c0dd549 197
AppNearMe 0:07fa9c0dd549 198 WRITE_UINT16(&out[0], dataLength);
AppNearMe 0:07fa9c0dd549 199 memcpy(data, &out[2], dataLength);
AppNearMe 0:07fa9c0dd549 200
AppNearMe 0:07fa9c0dd549 201 command(Transport::NFC_ENCODE_PREFIX, out, sizeof(out), in, sizeof(in));
AppNearMe 0:07fa9c0dd549 202
AppNearMe 0:07fa9c0dd549 203 *pPrefix = in[0];
AppNearMe 0:07fa9c0dd549 204 }
AppNearMe 0:07fa9c0dd549 205
AppNearMe 0:07fa9c0dd549 206 void Transport::leds(bool led1, bool led2)
AppNearMe 0:07fa9c0dd549 207 {
AppNearMe 0:07fa9c0dd549 208 uint8_t out[] = {led1?1:0, led2?1:0};
AppNearMe 0:07fa9c0dd549 209 command(Transport::LEDS, out, sizeof(out), NULL, 0);
AppNearMe 0:07fa9c0dd549 210 }
AppNearMe 0:07fa9c0dd549 211
AppNearMe 0:07fa9c0dd549 212 Transport::CommandError Transport::command(Transport::CommandCode command, uint8_t* outBuf, size_t outLength, uint8_t* inBuf, size_t inLength)
AppNearMe 0:07fa9c0dd549 213 {
AppNearMe 0:07fa9c0dd549 214 _cs = 0;
AppNearMe 0:07fa9c0dd549 215 _spi.write((uint8_t)((outLength + 1) & 0xFF));
AppNearMe 0:07fa9c0dd549 216 _cs = 1;
AppNearMe 0:07fa9c0dd549 217 _cs = 0;
AppNearMe 0:07fa9c0dd549 218 _spi.write((uint8_t)(command & 0xFF));
AppNearMe 0:07fa9c0dd549 219 _cs = 1;
AppNearMe 0:07fa9c0dd549 220 for(int i = 0; i < outLength; i++)
AppNearMe 0:07fa9c0dd549 221 {
AppNearMe 0:07fa9c0dd549 222 _cs = 0;
AppNearMe 0:07fa9c0dd549 223 _spi.write(outBuf[i]);
AppNearMe 0:07fa9c0dd549 224 _cs = 1;
AppNearMe 0:07fa9c0dd549 225 }
AppNearMe 0:07fa9c0dd549 226
AppNearMe 0:07fa9c0dd549 227 size_t length = 0;
AppNearMe 0:07fa9c0dd549 228 while(length == 0)
AppNearMe 0:07fa9c0dd549 229 {
AppNearMe 0:07fa9c0dd549 230 _cs = 0;
AppNearMe 0:07fa9c0dd549 231 length = _spi.write(0);
AppNearMe 0:07fa9c0dd549 232 _cs = 1;
AppNearMe 0:07fa9c0dd549 233 }
AppNearMe 0:07fa9c0dd549 234
AppNearMe 0:07fa9c0dd549 235 _cs = 0;
AppNearMe 0:07fa9c0dd549 236 Transport::CommandCode retCmd = (Transport::CommandCode)_spi.write(0);
AppNearMe 0:07fa9c0dd549 237 length--;
AppNearMe 0:07fa9c0dd549 238 _cs = 1;
AppNearMe 0:07fa9c0dd549 239
AppNearMe 0:07fa9c0dd549 240 _cs = 0;
AppNearMe 0:07fa9c0dd549 241 Transport::CommandError ret = (Transport::CommandError)_spi.write(0);
AppNearMe 0:07fa9c0dd549 242 length--;
AppNearMe 0:07fa9c0dd549 243 _cs = 1;
AppNearMe 0:07fa9c0dd549 244
AppNearMe 0:07fa9c0dd549 245 for(int i = 0; i < length; i++)
AppNearMe 0:07fa9c0dd549 246 {
AppNearMe 0:07fa9c0dd549 247 _cs = 0;
AppNearMe 0:07fa9c0dd549 248 if(i < inLength)
AppNearMe 0:07fa9c0dd549 249 {
AppNearMe 0:07fa9c0dd549 250 inBuf[i] = _spi.write(0);
AppNearMe 0:07fa9c0dd549 251 }
AppNearMe 0:07fa9c0dd549 252 else
AppNearMe 0:07fa9c0dd549 253 {
AppNearMe 0:07fa9c0dd549 254 _spi.write(0);
AppNearMe 0:07fa9c0dd549 255 }
AppNearMe 0:07fa9c0dd549 256 _cs = 1;
AppNearMe 0:07fa9c0dd549 257 }
AppNearMe 0:07fa9c0dd549 258
AppNearMe 0:07fa9c0dd549 259 return ret;
AppNearMe 0:07fa9c0dd549 260 }