RFID tracking with mbed & RS-EDP reference design
Dependencies: RWDModule mbed SDCard
mifare/RWDMifare.cpp@0:fd63457452f4, 2010-07-28 (annotated)
- Committer:
- donatien
- Date:
- Wed Jul 28 11:02:36 2010 +0000
- Revision:
- 0:fd63457452f4
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
donatien | 0:fd63457452f4 | 1 | /* |
donatien | 0:fd63457452f4 | 2 | Copyright (c) 2010 ARM Limited |
donatien | 0:fd63457452f4 | 3 | |
donatien | 0:fd63457452f4 | 4 | Permission is hereby granted, free of charge, to any person obtaining a copy |
donatien | 0:fd63457452f4 | 5 | of this software and associated documentation files (the "Software"), to deal |
donatien | 0:fd63457452f4 | 6 | in the Software without restriction, including without limitation the rights |
donatien | 0:fd63457452f4 | 7 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
donatien | 0:fd63457452f4 | 8 | copies of the Software, and to permit persons to whom the Software is |
donatien | 0:fd63457452f4 | 9 | furnished to do so, subject to the following conditions: |
donatien | 0:fd63457452f4 | 10 | |
donatien | 0:fd63457452f4 | 11 | The above copyright notice and this permission notice shall be included in |
donatien | 0:fd63457452f4 | 12 | all copies or substantial portions of the Software. |
donatien | 0:fd63457452f4 | 13 | |
donatien | 0:fd63457452f4 | 14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
donatien | 0:fd63457452f4 | 15 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
donatien | 0:fd63457452f4 | 16 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
donatien | 0:fd63457452f4 | 17 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
donatien | 0:fd63457452f4 | 18 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
donatien | 0:fd63457452f4 | 19 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
donatien | 0:fd63457452f4 | 20 | THE SOFTWARE. |
donatien | 0:fd63457452f4 | 21 | */ |
donatien | 0:fd63457452f4 | 22 | |
donatien | 0:fd63457452f4 | 23 | #include "RWDMifare.h" |
donatien | 0:fd63457452f4 | 24 | |
donatien | 0:fd63457452f4 | 25 | RWDMifare::RWDMifare(PinName tx, PinName rx, PinName cts) : RWDModule(tx, rx, cts) |
donatien | 0:fd63457452f4 | 26 | { |
donatien | 0:fd63457452f4 | 27 | |
donatien | 0:fd63457452f4 | 28 | } |
donatien | 0:fd63457452f4 | 29 | |
donatien | 0:fd63457452f4 | 30 | RWDMifare::~RWDMifare() |
donatien | 0:fd63457452f4 | 31 | { |
donatien | 0:fd63457452f4 | 32 | |
donatien | 0:fd63457452f4 | 33 | } |
donatien | 0:fd63457452f4 | 34 | |
donatien | 0:fd63457452f4 | 35 | RWDMifare::RWDMifareErr RWDMifare::init() |
donatien | 0:fd63457452f4 | 36 | { |
donatien | 0:fd63457452f4 | 37 | const uint8_t config[] = {0x03, 0x00}; //Configure ready for Mifare Op (0x00 to addr 0x03 in EEPROM) |
donatien | 0:fd63457452f4 | 38 | uint8_t resp[64] = {0}; |
donatien | 0:fd63457452f4 | 39 | //Cf http://www.ibtechnology.co.uk/pdf/MF_ICprot.pdf |
donatien | 0:fd63457452f4 | 40 | //Command 'P': cf p11 |
donatien | 0:fd63457452f4 | 41 | //EEPROM parameters: cf p12 |
donatien | 0:fd63457452f4 | 42 | //Ack check: cf p13 |
donatien | 0:fd63457452f4 | 43 | command(0x50, config, 2, resp, 0, 0x80, 0x89); //Program EEPROM command is 0x50 ('P') |
donatien | 0:fd63457452f4 | 44 | while(!ready()) //Wait for a response |
donatien | 0:fd63457452f4 | 45 | { |
donatien | 0:fd63457452f4 | 46 | |
donatien | 0:fd63457452f4 | 47 | } |
donatien | 0:fd63457452f4 | 48 | |
donatien | 0:fd63457452f4 | 49 | if(!result()) //If this fails, there is something wrong with the hardware |
donatien | 0:fd63457452f4 | 50 | { |
donatien | 0:fd63457452f4 | 51 | return MIFARE_HW; |
donatien | 0:fd63457452f4 | 52 | } |
donatien | 0:fd63457452f4 | 53 | |
donatien | 0:fd63457452f4 | 54 | return MIFARE_OK; |
donatien | 0:fd63457452f4 | 55 | } |
donatien | 0:fd63457452f4 | 56 | |
donatien | 0:fd63457452f4 | 57 | RWDMifare::RWDMifareErr RWDMifare::getUID(uint8_t* pUID, size_t* pLen) //pUID must be at least 10-bytes long |
donatien | 0:fd63457452f4 | 58 | //(A Mifare UID can either be 4, 7, or 10 bytes long) |
donatien | 0:fd63457452f4 | 59 | //This reader does not support 10 bytes uids |
donatien | 0:fd63457452f4 | 60 | { |
donatien | 0:fd63457452f4 | 61 | //Cf http://www.ibtechnology.co.uk/pdf/MF_ICprot.pdf |
donatien | 0:fd63457452f4 | 62 | //Command 'U': cf p19 |
donatien | 0:fd63457452f4 | 63 | //Ack check: cf p13 |
donatien | 0:fd63457452f4 | 64 | command(0x55, NULL, 0, pUID, 7, 0x86, 0x86); //UID command is 0x55 ('U') |
donatien | 0:fd63457452f4 | 65 | while(!ready()) //Wait for a response |
donatien | 0:fd63457452f4 | 66 | { |
donatien | 0:fd63457452f4 | 67 | |
donatien | 0:fd63457452f4 | 68 | } |
donatien | 0:fd63457452f4 | 69 | |
donatien | 0:fd63457452f4 | 70 | if(!result()) //Error detected, there is no card in field |
donatien | 0:fd63457452f4 | 71 | { |
donatien | 0:fd63457452f4 | 72 | return MIFARE_NOCARD; |
donatien | 0:fd63457452f4 | 73 | } |
donatien | 0:fd63457452f4 | 74 | |
donatien | 0:fd63457452f4 | 75 | printf("Got card.\n"); |
donatien | 0:fd63457452f4 | 76 | |
donatien | 0:fd63457452f4 | 77 | //Checks UID length returned by reader |
donatien | 0:fd63457452f4 | 78 | int i; |
donatien | 0:fd63457452f4 | 79 | for(i = 0; i < 7; i++) |
donatien | 0:fd63457452f4 | 80 | { |
donatien | 0:fd63457452f4 | 81 | if(pUID[i] == 0) //End of UID, cf http://www.ibtechnology.co.uk/pdf/MF_ICprot.pdf p19 |
donatien | 0:fd63457452f4 | 82 | break; |
donatien | 0:fd63457452f4 | 83 | } |
donatien | 0:fd63457452f4 | 84 | *pLen = i; |
donatien | 0:fd63457452f4 | 85 | |
donatien | 0:fd63457452f4 | 86 | return MIFARE_OK; |
donatien | 0:fd63457452f4 | 87 | } |