Yihui Xiong / Mbed 2 deprecated PN532_write_tag

Use Seeeduino Arch (or Arch Pro) + NFC Shield to write a Mifare Classic tag

Dependencies:   PN532 USBDevice mbed

main.cpp@0:b81d113f3a83, 2013-10-08 (annotated)

Committer:
yihui
Date:
Tue Oct 08 08:58:32 2013 +0000
Revision:
0:b81d113f3a83
Child:
1:c5b5be0d6c5d
Inital, read an ISO14443A card's UID

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yihui 0:b81d113f3a83 1 #include "mbed.h"
yihui 0:b81d113f3a83 2 #include "PN532.h"
yihui 0:b81d113f3a83 3 #include "USBSerial.h"
yihui 0:b81d113f3a83 4
yihui 0:b81d113f3a83 5 // PN532(mosi, miso, clk, cs)
yihui 0:b81d113f3a83 6 PN532 nfc(P1_22, P1_21, P1_20, P0_2);
yihui 0:b81d113f3a83 7
yihui 0:b81d113f3a83 8 DigitalOut myled(LED1);
yihui 0:b81d113f3a83 9
yihui 0:b81d113f3a83 10 USBSerial pc;
yihui 0:b81d113f3a83 11
yihui 0:b81d113f3a83 12 int main() {
yihui 0:b81d113f3a83 13
yihui 0:b81d113f3a83 14 nfc.begin();
yihui 0:b81d113f3a83 15 uint32_t versiondata = nfc.getFirmwareVersion();
yihui 0:b81d113f3a83 16 if (! versiondata) {
yihui 0:b81d113f3a83 17 pc.printf("Didn't find PN532\r\n");
yihui 0:b81d113f3a83 18 while (1) {
yihui 0:b81d113f3a83 19 myled = !myled;
yihui 0:b81d113f3a83 20 wait(0.1);
yihui 0:b81d113f3a83 21 }
yihui 0:b81d113f3a83 22 }
yihui 0:b81d113f3a83 23
yihui 0:b81d113f3a83 24 pc.printf("Found chip PN5%2X\r\n", versiondata >> 24);
yihui 0:b81d113f3a83 25 pc.printf("Firmware V%d.%d\r\n", (versiondata >> 16) & 0xFF, (versiondata >> 8) & 0xFF);
yihui 0:b81d113f3a83 26
yihui 0:b81d113f3a83 27 nfc.SAMConfig();
yihui 0:b81d113f3a83 28
yihui 0:b81d113f3a83 29
yihui 0:b81d113f3a83 30 while(1) {
yihui 0:b81d113f3a83 31 bool success;
yihui 0:b81d113f3a83 32 uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 }; // Buffer to store the returned UID
yihui 0:b81d113f3a83 33 uint8_t uidLength; // Length of the UID (4 or 7 bytes depending on ISO14443A card type)
yihui 0:b81d113f3a83 34
yihui 0:b81d113f3a83 35 // Wait for an ISO14443A type cards (Mifare, etc.). When one is found
yihui 0:b81d113f3a83 36 // 'uid' will be populated with the UID, and uidLength will indicate
yihui 0:b81d113f3a83 37 // if the uid is 4 bytes (Mifare Classic) or 7 bytes (Mifare Ultralight)
yihui 0:b81d113f3a83 38 success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, &uid[0], &uidLength);
yihui 0:b81d113f3a83 39
yihui 0:b81d113f3a83 40 if (success) {
yihui 0:b81d113f3a83 41 myled = 1;
yihui 0:b81d113f3a83 42 pc.printf("Found a card\r\n");
yihui 0:b81d113f3a83 43 pc.printf("UID length: %d\r\nUID Value: ", uidLength);
yihui 0:b81d113f3a83 44 for (uint8_t i=0; i < uidLength; i++) {
yihui 0:b81d113f3a83 45 pc.printf("0x%X ", uid[i]);
yihui 0:b81d113f3a83 46 }
yihui 0:b81d113f3a83 47
yihui 0:b81d113f3a83 48 wait(1);
yihui 0:b81d113f3a83 49 myled = 0;
yihui 0:b81d113f3a83 50 } else {
yihui 0:b81d113f3a83 51 pc.printf("Time out\r\n");
yihui 0:b81d113f3a83 52 wait(1);
yihui 0:b81d113f3a83 53 }
yihui 0:b81d113f3a83 54 }
yihui 0:b81d113f3a83 55 }