Cristian Bogdan
SmartCard reader. PC is interface through USB or TCPport. SmartCard is interfaced through UART@ 1MHz, DIV372
Dependencies: EthernetNetIf mbed
SmartCardReader.cpp@0:5bf6fcf71548, 2011-02-27 (annotated)
- Committer:
- bcalin1984
- Date:
- Sun Feb 27 22:20:40 2011 +0000
- Revision:
- 0:5bf6fcf71548
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| bcalin1984 | 0:5bf6fcf71548 | 1 | /* |
| bcalin1984 | 0:5bf6fcf71548 | 2 | This file encapsulates logic for SmartCard Reader |
| bcalin1984 | 0:5bf6fcf71548 | 3 | |
| bcalin1984 | 0:5bf6fcf71548 | 4 | Author: Calin Bira |
| bcalin1984 | 0:5bf6fcf71548 | 5 | Date: 28.02.2011 |
| bcalin1984 | 0:5bf6fcf71548 | 6 | */ |
| bcalin1984 | 0:5bf6fcf71548 | 7 | |
| bcalin1984 | 0:5bf6fcf71548 | 8 | #include "SmartCardReader.h" |
| bcalin1984 | 0:5bf6fcf71548 | 9 | |
| bcalin1984 | 0:5bf6fcf71548 | 10 | SmartCardReader::SmartCardReader(Serial *_dut, DigitalOut *_vcc, DigitalOut *_rst,PwmOut *_clock, char *_format) |
| bcalin1984 | 0:5bf6fcf71548 | 11 | { |
| bcalin1984 | 0:5bf6fcf71548 | 12 | int databits,stopbits; |
| bcalin1984 | 0:5bf6fcf71548 | 13 | Serial::Parity parity; |
| bcalin1984 | 0:5bf6fcf71548 | 14 | |
| bcalin1984 | 0:5bf6fcf71548 | 15 | freq = 1000*1000; |
| bcalin1984 | 0:5bf6fcf71548 | 16 | divfact = 372; |
| bcalin1984 | 0:5bf6fcf71548 | 17 | |
| bcalin1984 | 0:5bf6fcf71548 | 18 | dut = _dut; |
| bcalin1984 | 0:5bf6fcf71548 | 19 | rst = _rst; |
| bcalin1984 | 0:5bf6fcf71548 | 20 | vcc = _vcc; |
| bcalin1984 | 0:5bf6fcf71548 | 21 | clk = _clock; |
| bcalin1984 | 0:5bf6fcf71548 | 22 | |
| bcalin1984 | 0:5bf6fcf71548 | 23 | BytesToIgnore = 0; |
| bcalin1984 | 0:5bf6fcf71548 | 24 | ReceiveBufferIndex = 0; |
| bcalin1984 | 0:5bf6fcf71548 | 25 | |
| bcalin1984 | 0:5bf6fcf71548 | 26 | databits = _format[0] - '0'; |
| bcalin1984 | 0:5bf6fcf71548 | 27 | switch (_format[1]) |
| bcalin1984 | 0:5bf6fcf71548 | 28 | { |
| bcalin1984 | 0:5bf6fcf71548 | 29 | case 'E': {parity = Serial::Even; break;} |
| bcalin1984 | 0:5bf6fcf71548 | 30 | case 'O': {parity = Serial::Odd; break;} |
| bcalin1984 | 0:5bf6fcf71548 | 31 | default: {parity = Serial::None; break;} |
| bcalin1984 | 0:5bf6fcf71548 | 32 | } |
| bcalin1984 | 0:5bf6fcf71548 | 33 | |
| bcalin1984 | 0:5bf6fcf71548 | 34 | stopbits = _format[2] - '0'; |
| bcalin1984 | 0:5bf6fcf71548 | 35 | dut->format(databits,parity,stopbits); |
| bcalin1984 | 0:5bf6fcf71548 | 36 | |
| bcalin1984 | 0:5bf6fcf71548 | 37 | setClock(freq); |
| bcalin1984 | 0:5bf6fcf71548 | 38 | clk->write(0.5);// 50% duty cycle |
| bcalin1984 | 0:5bf6fcf71548 | 39 | |
| bcalin1984 | 0:5bf6fcf71548 | 40 | |
| bcalin1984 | 0:5bf6fcf71548 | 41 | } |
| bcalin1984 | 0:5bf6fcf71548 | 42 | |
| bcalin1984 | 0:5bf6fcf71548 | 43 | void SmartCardReader::setClock(int Hz) |
| bcalin1984 | 0:5bf6fcf71548 | 44 | { |
| bcalin1984 | 0:5bf6fcf71548 | 45 | freq = Hz; |
| bcalin1984 | 0:5bf6fcf71548 | 46 | clk->period_us(1000*1000/freq); |
| bcalin1984 | 0:5bf6fcf71548 | 47 | dut->baud(freq/divfact); |
| bcalin1984 | 0:5bf6fcf71548 | 48 | } |
| bcalin1984 | 0:5bf6fcf71548 | 49 | |
| bcalin1984 | 0:5bf6fcf71548 | 50 | void SmartCardReader::cold_reset() |
| bcalin1984 | 0:5bf6fcf71548 | 51 | { |
| bcalin1984 | 0:5bf6fcf71548 | 52 | *vcc = 0; |
| bcalin1984 | 0:5bf6fcf71548 | 53 | *rst = 0; |
| bcalin1984 | 0:5bf6fcf71548 | 54 | wait(0.1); |
| bcalin1984 | 0:5bf6fcf71548 | 55 | *vcc = 1; |
| bcalin1984 | 0:5bf6fcf71548 | 56 | wait(0.1); |
| bcalin1984 | 0:5bf6fcf71548 | 57 | |
| bcalin1984 | 0:5bf6fcf71548 | 58 | while (dut->readable()) |
| bcalin1984 | 0:5bf6fcf71548 | 59 | dut->getc(); |
| bcalin1984 | 0:5bf6fcf71548 | 60 | *rst = 1; |
| bcalin1984 | 0:5bf6fcf71548 | 61 | } |
| bcalin1984 | 0:5bf6fcf71548 | 62 | |
| bcalin1984 | 0:5bf6fcf71548 | 63 | void SmartCardReader::warm_reset() |
| bcalin1984 | 0:5bf6fcf71548 | 64 | { |
| bcalin1984 | 0:5bf6fcf71548 | 65 | *rst = 0; |
| bcalin1984 | 0:5bf6fcf71548 | 66 | wait(0.1); |
| bcalin1984 | 0:5bf6fcf71548 | 67 | *rst = 1; |
| bcalin1984 | 0:5bf6fcf71548 | 68 | } |
| bcalin1984 | 0:5bf6fcf71548 | 69 | |
| bcalin1984 | 0:5bf6fcf71548 | 70 | /* |
| bcalin1984 | 0:5bf6fcf71548 | 71 | void SmartCardReader::Relay_PC_SC() |
| bcalin1984 | 0:5bf6fcf71548 | 72 | { |
| bcalin1984 | 0:5bf6fcf71548 | 73 | static char ignore=0; |
| bcalin1984 | 0:5bf6fcf71548 | 74 | |
| bcalin1984 | 0:5bf6fcf71548 | 75 | while (dut->readable()) //if there is data from smartcard |
| bcalin1984 | 0:5bf6fcf71548 | 76 | { |
| bcalin1984 | 0:5bf6fcf71548 | 77 | if (ignore>0) |
| bcalin1984 | 0:5bf6fcf71548 | 78 | { |
| bcalin1984 | 0:5bf6fcf71548 | 79 | dut->getc();//ignore data: this is data from pc |
| bcalin1984 | 0:5bf6fcf71548 | 80 | ignore--; |
| bcalin1984 | 0:5bf6fcf71548 | 81 | } |
| bcalin1984 | 0:5bf6fcf71548 | 82 | else pc->putc(dut->getc());//send to pc |
| bcalin1984 | 0:5bf6fcf71548 | 83 | } |
| bcalin1984 | 0:5bf6fcf71548 | 84 | |
| bcalin1984 | 0:5bf6fcf71548 | 85 | while (pc->readable()) //if there is data from pc |
| bcalin1984 | 0:5bf6fcf71548 | 86 | { |
| bcalin1984 | 0:5bf6fcf71548 | 87 | ignore++; |
| bcalin1984 | 0:5bf6fcf71548 | 88 | dut->putc(pc->getc()); //send data to smartcard |
| bcalin1984 | 0:5bf6fcf71548 | 89 | } |
| bcalin1984 | 0:5bf6fcf71548 | 90 | } |
| bcalin1984 | 0:5bf6fcf71548 | 91 | */ |
| bcalin1984 | 0:5bf6fcf71548 | 92 | void SmartCardReader::send(char *buf, int len) |
| bcalin1984 | 0:5bf6fcf71548 | 93 | { |
| bcalin1984 | 0:5bf6fcf71548 | 94 | while(len-- >0) |
| bcalin1984 | 0:5bf6fcf71548 | 95 | { |
| bcalin1984 | 0:5bf6fcf71548 | 96 | BytesToIgnore++; |
| bcalin1984 | 0:5bf6fcf71548 | 97 | dut->putc(*buf++); |
| bcalin1984 | 0:5bf6fcf71548 | 98 | } |
| bcalin1984 | 0:5bf6fcf71548 | 99 | } |
| bcalin1984 | 0:5bf6fcf71548 | 100 | |
| bcalin1984 | 0:5bf6fcf71548 | 101 | int SmartCardReader::receive(char *buf) |
| bcalin1984 | 0:5bf6fcf71548 | 102 | { |
| bcalin1984 | 0:5bf6fcf71548 | 103 | int OldIndex = ReceiveBufferIndex; |
| bcalin1984 | 0:5bf6fcf71548 | 104 | for (int i=0; i < ReceiveBufferIndex; i++) |
| bcalin1984 | 0:5bf6fcf71548 | 105 | { |
| bcalin1984 | 0:5bf6fcf71548 | 106 | buf[i] = ReceiveBuffer[i]; |
| bcalin1984 | 0:5bf6fcf71548 | 107 | } |
| bcalin1984 | 0:5bf6fcf71548 | 108 | ReceiveBufferIndex = 0; |
| bcalin1984 | 0:5bf6fcf71548 | 109 | return OldIndex; |
| bcalin1984 | 0:5bf6fcf71548 | 110 | } |
| bcalin1984 | 0:5bf6fcf71548 | 111 | |
| bcalin1984 | 0:5bf6fcf71548 | 112 | void SmartCardReader::doEvents() |
| bcalin1984 | 0:5bf6fcf71548 | 113 | { |
| bcalin1984 | 0:5bf6fcf71548 | 114 | //Relay_PC_SC(); |
| bcalin1984 | 0:5bf6fcf71548 | 115 | |
| bcalin1984 | 0:5bf6fcf71548 | 116 | while (dut->readable()) //if there is data from smartcard |
| bcalin1984 | 0:5bf6fcf71548 | 117 | { |
| bcalin1984 | 0:5bf6fcf71548 | 118 | if (BytesToIgnore > 0) |
| bcalin1984 | 0:5bf6fcf71548 | 119 | { |
| bcalin1984 | 0:5bf6fcf71548 | 120 | dut->getc();//ignore data: this is data from previous send |
| bcalin1984 | 0:5bf6fcf71548 | 121 | BytesToIgnore--; |
| bcalin1984 | 0:5bf6fcf71548 | 122 | } |
| bcalin1984 | 0:5bf6fcf71548 | 123 | else |
| bcalin1984 | 0:5bf6fcf71548 | 124 | { |
| bcalin1984 | 0:5bf6fcf71548 | 125 | if (ReceiveBufferIndex < ReceiveBufferLen) |
| bcalin1984 | 0:5bf6fcf71548 | 126 | ReceiveBuffer[ReceiveBufferIndex++] = dut->getc(); |
| bcalin1984 | 0:5bf6fcf71548 | 127 | else dut->getc();//discard data, no space in buffer |
| bcalin1984 | 0:5bf6fcf71548 | 128 | } |
| bcalin1984 | 0:5bf6fcf71548 | 129 | } |
| bcalin1984 | 0:5bf6fcf71548 | 130 | } |