Send NFC messages using NFC Shield V2.0 by SeeedStudio.
The program uses the standard Arduino shields SPI pins:
Signal | Pin |
SCK | D13 |
MISO | D12 |
MOSI | D11 |
CS | D10 |
Note that this shield doesn't use the standard SPI pins, but relies on non-standard 6-pin SPI header located at the shield bottom. To make it work you will have to bridge those pins as shown on the image (the green SPI pins).
Signal | Pin 1 | Pin 2 |
MOSI | D11 | SPI4 |
MISO | D12 | SPI1 |
SCK | D13 | SPI3 |
main.cpp@0:e403d7000b50, 2014-03-25 (annotated)
- Committer:
- screamer
- Date:
- Tue Mar 25 16:48:28 2014 +0000
- Revision:
- 0:e403d7000b50
- Child:
- 2:f0e840a179ff
Initial revision
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
screamer | 0:e403d7000b50 | 1 | #include "mbed.h" |
screamer | 0:e403d7000b50 | 2 | #include "PN532_SPI.h" |
screamer | 0:e403d7000b50 | 3 | #include "snep.h" |
screamer | 0:e403d7000b50 | 4 | #include "NdefMessage.h" |
screamer | 0:e403d7000b50 | 5 | |
screamer | 0:e403d7000b50 | 6 | Serial pc(USBTX, USBRX); |
screamer | 0:e403d7000b50 | 7 | |
screamer | 0:e403d7000b50 | 8 | uint8_t ndefBuf[128]; |
screamer | 0:e403d7000b50 | 9 | |
screamer | 0:e403d7000b50 | 10 | int main() |
screamer | 0:e403d7000b50 | 11 | { |
screamer | 0:e403d7000b50 | 12 | wait(2); |
screamer | 0:e403d7000b50 | 13 | |
screamer | 0:e403d7000b50 | 14 | pc.printf("Initializing - "); |
screamer | 0:e403d7000b50 | 15 | SPI spi(D11, D12, D13); |
screamer | 0:e403d7000b50 | 16 | PN532_SPI pn532spi(spi, D10); |
screamer | 0:e403d7000b50 | 17 | SNEP nfc(pn532spi); |
screamer | 0:e403d7000b50 | 18 | pc.printf("Done\r\n"); |
screamer | 0:e403d7000b50 | 19 | |
screamer | 0:e403d7000b50 | 20 | while (1) { |
screamer | 0:e403d7000b50 | 21 | pc.printf("Sending message - "); |
screamer | 0:e403d7000b50 | 22 | NdefMessage message = NdefMessage(); |
screamer | 0:e403d7000b50 | 23 | message.addTextRecord("mbed NFC shield"); |
screamer | 0:e403d7000b50 | 24 | message.addUriRecord("http://www.seeedstudio.com"); |
screamer | 0:e403d7000b50 | 25 | int messageSize = message.getEncodedSize(); |
screamer | 0:e403d7000b50 | 26 | if (messageSize > sizeof(ndefBuf)) { |
screamer | 0:e403d7000b50 | 27 | pc.printf("ndefBuf is too small\r\n"); |
screamer | 0:e403d7000b50 | 28 | while (1) { |
screamer | 0:e403d7000b50 | 29 | } |
screamer | 0:e403d7000b50 | 30 | } |
screamer | 0:e403d7000b50 | 31 | message.encode(ndefBuf); |
screamer | 0:e403d7000b50 | 32 | if (0 >= nfc.write(ndefBuf, messageSize)) { |
screamer | 0:e403d7000b50 | 33 | pc.printf("Failed\r\n"); |
screamer | 0:e403d7000b50 | 34 | } else { |
screamer | 0:e403d7000b50 | 35 | pc.printf("Success\r\n"); |
screamer | 0:e403d7000b50 | 36 | } |
screamer | 0:e403d7000b50 | 37 | |
screamer | 0:e403d7000b50 | 38 | wait(3); |
screamer | 0:e403d7000b50 | 39 | } |
screamer | 0:e403d7000b50 | 40 | } |