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@1:c5b5be0d6c5d, 2013-10-17 (annotated)

Committer:
yihui
Date:
Thu Oct 17 07:10:06 2013 +0000
Revision:
1:c5b5be0d6c5d
Parent:
0:b81d113f3a83
Child:
2:56402cae2c3c
Use LOG() to output debug message

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 1:c5b5be0d6c5d 3
yihui 1:c5b5be0d6c5d 4 #if 0
yihui 1:c5b5be0d6c5d 5
yihui 1:c5b5be0d6c5d 6 #define LOG(args...)
yihui 1:c5b5be0d6c5d 7
yihui 1:c5b5be0d6c5d 8 #else
yihui 0:b81d113f3a83 9 #include "USBSerial.h"
yihui 0:b81d113f3a83 10
yihui 1:c5b5be0d6c5d 11 #define LOG(args...) pc.printf(args)
yihui 1:c5b5be0d6c5d 12
yihui 1:c5b5be0d6c5d 13 USBSerial pc;
yihui 1:c5b5be0d6c5d 14 #endif
yihui 1:c5b5be0d6c5d 15
yihui 0:b81d113f3a83 16 // PN532(mosi, miso, clk, cs)
yihui 0:b81d113f3a83 17 PN532 nfc(P1_22, P1_21, P1_20, P0_2);
yihui 0:b81d113f3a83 18
yihui 1:c5b5be0d6c5d 19 DigitalOut led1(LED1);
yihui 0:b81d113f3a83 20
yihui 1:c5b5be0d6c5d 21
yihui 0:b81d113f3a83 22
yihui 0:b81d113f3a83 23 int main() {
yihui 0:b81d113f3a83 24
yihui 0:b81d113f3a83 25 nfc.begin();
yihui 0:b81d113f3a83 26 uint32_t versiondata = nfc.getFirmwareVersion();
yihui 0:b81d113f3a83 27 if (! versiondata) {
yihui 1:c5b5be0d6c5d 28 LOG("Didn't find PN532\r\n");
yihui 0:b81d113f3a83 29 while (1) {
yihui 1:c5b5be0d6c5d 30 led1 = !led1;
yihui 0:b81d113f3a83 31 wait(0.1);
yihui 0:b81d113f3a83 32 }
yihui 0:b81d113f3a83 33 }
yihui 0:b81d113f3a83 34
yihui 1:c5b5be0d6c5d 35 LOG("Found chip PN5%2X\r\n", versiondata >> 24);
yihui 1:c5b5be0d6c5d 36 LOG("Firmware V%d.%d\r\n", (versiondata >> 16) & 0xFF, (versiondata >> 8) & 0xFF);
yihui 0:b81d113f3a83 37
yihui 0:b81d113f3a83 38 nfc.SAMConfig();
yihui 0:b81d113f3a83 39
yihui 0:b81d113f3a83 40
yihui 0:b81d113f3a83 41 while(1) {
yihui 0:b81d113f3a83 42 bool success;
yihui 0:b81d113f3a83 43 uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 }; // Buffer to store the returned UID
yihui 0:b81d113f3a83 44 uint8_t uidLength; // Length of the UID (4 or 7 bytes depending on ISO14443A card type)
yihui 0:b81d113f3a83 45
yihui 0:b81d113f3a83 46 // Wait for an ISO14443A type cards (Mifare, etc.). When one is found
yihui 0:b81d113f3a83 47 // 'uid' will be populated with the UID, and uidLength will indicate
yihui 0:b81d113f3a83 48 // if the uid is 4 bytes (Mifare Classic) or 7 bytes (Mifare Ultralight)
yihui 0:b81d113f3a83 49 success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, &uid[0], &uidLength);
yihui 0:b81d113f3a83 50
yihui 0:b81d113f3a83 51 if (success) {
yihui 1:c5b5be0d6c5d 52 led1 = 1;
yihui 1:c5b5be0d6c5d 53 LOG("Found a card\r\n");
yihui 1:c5b5be0d6c5d 54 LOG("UID length: %d\r\nUID Value: ", uidLength);
yihui 0:b81d113f3a83 55 for (uint8_t i=0; i < uidLength; i++) {
yihui 1:c5b5be0d6c5d 56 LOG("0x%X ", uid[i]);
yihui 0:b81d113f3a83 57 }
yihui 0:b81d113f3a83 58
yihui 0:b81d113f3a83 59 wait(1);
yihui 1:c5b5be0d6c5d 60 led1 = 0;
yihui 0:b81d113f3a83 61 } else {
yihui 1:c5b5be0d6c5d 62 LOG("Time out\r\n");
yihui 0:b81d113f3a83 63 wait(1);
yihui 0:b81d113f3a83 64 }
yihui 0:b81d113f3a83 65 }
yihui 0:b81d113f3a83 66 }