Diff: main.cpp

Revision:

1:f228fdc41598

Parent:

0:21ac4fe1ccf8

--- a/main.cpp	Thu Oct 17 07:14:21 2013 +0000
+++ b/main.cpp	Thu Nov 21 08:27:37 2013 +0000
@@ -1,139 +1,54 @@
-/**
- * Seeeduino Arch + NFC Shield write a NDEF record to a NFC tag
- */
-
-
 #include "mbed.h"
-#include "PN532.h"
-
-#if 0
+#include "PN532_SPI.h"
+#include "snep.h"
+#include "NdefMessage.h"
 
+#if 1                           // Using Seeeduino Arch
 #define LOG(args...)
-
-#else
-#include "USBSerial.h"
+SPI spi(P1_22, P1_21, P1_20);  // SPI(mosi, miso, clk)
+PN532_SPI pn532spi(spi, P0_2);
 
+#else                           // Using Arch Pro
 #define LOG(args...)        pc.printf(args)
-
-USBSerial pc;
-//Serial pc(USBTX, USBRX);
+Serial pc(USBTX, USBRX);
+SPI spi(P0_18, P0_17, P0_15);
+PN532_SPI pn532spi(spi, P0_6);
 #endif
 
-// PN532(mosi, miso, clk, cs)
-PN532 nfc(P1_22, P1_21, P1_20, P0_2);
-
-DigitalOut led1(LED1);
-
-/*
-    We can encode many different kinds of pointers to the card,
-    from a URL, to an Email address, to a phone number, and many more
-    check the library header .h file to see the large # of supported
-    prefixes!
-*/
-// For a http://www. url:
-const char *url = "seeedstudio.com";
-uint8_t ndefprefix = NDEF_URIPREFIX_HTTP_WWWDOT;
-
-// for an email address
-//const char * url = "mail@example.com";
-//uint8_t ndefprefix = NDEF_URIPREFIX_MAILTO;
-
-// for a phone number
-//const char * url = "+1 212 555 1212";
-//uint8_t ndefprefix = NDEF_URIPREFIX_TEL;
+DigitalOut led(LED1);
+SNEP nfc(pn532spi);
+uint8_t ndefBuf[128];
 
 int main()
 {
-
-    nfc.begin();
-    uint32_t versiondata = nfc.getFirmwareVersion();
-    if (! versiondata) {
-        LOG("Didn't find PN532\r\n");
-        while (1) {
-            led1 = !led1;
-            wait(0.1);
-        }
-    }
-
-    LOG("Found chip PN5%2X\r\n", versiondata >> 24);
-    LOG("Firmware V%d.%d\r\n", (versiondata >> 16) & 0xFF, (versiondata >> 8) & 0xFF);
-
-    nfc.SAMConfig();
-
-
     while (1) {
-        uint8_t success;                          // Flag to check if there was an error with the PN532
-        uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 };  // Buffer to store the continueed UID
-        uint8_t uidLength;                        // Length of the UID (4 or 7 bytes depending on ISO14443A card type)
-        bool authenticated = false;               // Flag to indicate if the sector is authenticated
-
-        // Use the default NDEF keys (these would have have set by mifareclassic_formatndef.pde!)
-        uint8_t keya[6] = { 0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5 };
-        uint8_t keyb[6] = { 0xD3, 0xF7, 0xD3, 0xF7, 0xD3, 0xF7 };
-
-        LOG("Place your NDEF formatted Mifare Classic card on the reader to update the NDEF record\r\n");
-
-        // Wait for an ISO14443A type card (Mifare, etc.).  When one is found
-        // 'uid' will be populated with the UID, and uidLength will indicate
-        // if the uid is 4 bytes (Mifare Classic) or 7 bytes (Mifare Ultralight)
-        success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength, 0);
-
-        if (success) {
-            // Display some basic information about the card
-            LOG("Found an ISO14443A card\r\n");
-            LOG("UID length: %d\r\nUID Value: ", uidLength);
-            for (uint8_t i = 0; i < uidLength; i++) {
-                LOG("0x%X ", uid[i]);
-            }
-
-            // Make sure this is a Mifare Classic card
-            if (uidLength != 4) {
-                LOG("Ooops ... this doesn't seem to be a Mifare Classic card!\r\n");
-                continue;
+#if 1
+        LOG("Send a message to Android");
+        NdefMessage message = NdefMessage();
+        message.addUriRecord("http://www.seeedstudio.com");
+        int messageSize = message.getEncodedSize();
+        if (messageSize > sizeof(ndefBuf)) {
+            LOG("ndefBuf is too small");
+            while (1) {
             }
-
-            // We probably have a Mifare Classic card ...
-            LOG("Seems to be a Mifare Classic card (4 byte UID)\r\n");
-
-            // Check if this is an NDEF card (using first block of sector 1 from mifareclassic_formatndef.pde)
-            // Must authenticate on the first key using 0xD3 0xF7 0xD3 0xF7 0xD3 0xF7
-            success = nfc.mifareclassic_AuthenticateBlock (uid, uidLength, 4, 0, keyb);
-            if (!success) {
-                LOG("Unable to authenticate block 4 ... is this card NDEF formatted?\r\n");
-                continue;
-            }
-
-            LOG("Authentication succeeded (seems to be an NDEF/NFC Forum tag) ...\r\n");
-
-            // Authenticated seems to have worked
-            // Try to write an NDEF record to sector 1
-            // Use 0x01 for the URI Identifier Code to prepend "http://www."
-            // to the url (and save some space).  For information on URI ID Codes
-            // see http://www.ladyada.net/wiki/private/articlestaging/nfc/ndef
-            if (strlen(url) > 38) {
-                // The length is also checked in the WriteNDEFURI function, but lets
-                // warn users here just in case they change the value and it's bigger
-                // than it should be
-                LOG("URI is too long ... must be less than 38 characters!\r\n");
-                continue;
-            }
-
-            LOG("Updating sector 1 with URI as NDEF Message\r\n");
-
-            // URI is within size limits ... write it to the card and report success/failure
-            success = nfc.mifareclassic_WriteNDEFURI(1, ndefprefix, url);
-            if (success) {
-                LOG("NDEF URI Record written to sector 1\r\n");
-                LOG("\r\n");
-            } else {
-                LOG("NDEF Record creation failed! :(\r\n");
-            }
+        } 
+        message.encode(ndefBuf);
+        if (0 >= nfc.write(ndefBuf, messageSize)) {
+            LOG("Failed\n");
         } else {
-            LOG("Didn't find a NFC tag\r\n");
+            LOG("Success\n");
         }
-
-        // Wait a bit before trying again
-        LOG("\n\nDone!\r\n");
-        wait(1);
+#else
+        LOG("Get a message from Android");
+        int msgSize = nfc.read(ndefBuf, sizeof(ndefBuf));
+        if (msgSize > 0) {
+            NdefMessage msg  = NdefMessage(ndefBuf, msgSize);
+            msg.print();
+            LOG("\nSuccess");
+        } else {
+            LOG("failed");
+        }
+#endif
+        wait(5);
     }
-}
+}
\ No newline at end of file