Diff: main.cpp

Revision:

0:88960f3eeb2c

diff -r 000000000000 -r 88960f3eeb2c main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Dec 27 01:46:32 2013 +0000
@@ -0,0 +1,109 @@
+
+#include "mbed.h"
+#include "ChainableLED.h"
+#include "PN532_SPI.h"
+#include "emulatetag.h"
+#include "NdefMessage.h"
+
+#include <string.h>
+
+#define LOG(args...)    
+
+BusOut leds(LED1, LED2, LED3, LED4);
+
+ChainableLED rgbled(P1_14, P1_13, 1);
+
+SPI spi(P1_22, P1_21, P1_20);
+PN532_SPI interface(spi, P0_2);
+EmulateTag nfc(interface);
+
+uint8_t ndefBuf[120];
+NdefMessage message;
+int messageSize;
+
+uint8_t uid[3] = { 0x12, 0x34, 0x56 };
+
+uint32_t getColor(uint8_t *buf)
+{
+    uint32_t x = 0;
+    for (uint8_t i = 0; i < 8; i++) {
+        uint8_t c = *buf;
+        if (c >= '0' && c <= '9') {
+            x *= 16;
+            x += c - '0';
+        } else if (c >= 'A' && c <= 'F') {
+            x *= 16;
+            x += (c - 'A') + 10;
+        } else if (c >= 'a' && c <= 'f') {
+            x *= 16;
+            x += (c - 'a') + 10;
+        } else 
+            break;
+
+        buf++;
+    }
+
+    return x;
+}
+
+void processNewNdef(uint8_t *buf, uint16_t length)
+{
+    NdefMessage msg = NdefMessage(buf, length);
+
+    NdefRecord record = msg.getRecord(0);
+    uint8_t recordbuf[32];
+    record.getType(recordbuf);
+    if (!memcmp(recordbuf, "text/c", 6)) {
+        uint8_t r, g, b;
+        uint32_t color;
+        record.getPayload(recordbuf);
+        color = getColor(recordbuf);
+        r = (color >> 16) & 0xFF;
+        g = (color >> 8) & 0xFF;
+        b = color & 0xFF;
+        
+        rgbled.setColorRGB(0, r, g, b);
+        leds = r;
+    }
+} 
+
+int main()
+{
+    LOG("------- Emulate Tag --------\n");
+    rgbled.setColorRGB(0, 0, 0, 0);
+
+    NdefRecord aarRecord = NdefRecord();
+    const uint8_t aarType[] = "android.com:pkg";
+    const uint8_t aarPayload[] = "com.seeedstudio.android.nfc.touchpixel";
+
+    aarRecord.setTnf(TNF_EXTERNAL_TYPE);
+    aarRecord.setType(aarType, sizeof(aarType) - 1);
+    aarRecord.setPayload(aarPayload, sizeof(aarPayload) - 1);
+
+    message = NdefMessage();
+    message.addMimeMediaRecord("text/c", "FF000000");
+    message.addRecord(aarRecord);
+    messageSize = message.getEncodedSize();
+    if (messageSize > sizeof(ndefBuf)) {
+        while (1) { }
+    }
+
+    LOG("Ndef encoded message size: %d\n", messageSize);
+
+    message.encode(ndefBuf);
+
+    // comment out this command for no ndef message
+    nfc.setNdefFile(ndefBuf, messageSize);
+
+    // uid must be 3 bytes!
+    nfc.setUid(uid);
+
+    nfc.init();
+
+    nfc.attach(processNewNdef);
+
+    while (1) {
+        //nfc.setNdefFile(ndefBuf, messageSize);
+        nfc.emulate();
+    }
+}