How to send APDU via I2C

[krasnal]

Hallo,
Can anyone provide me an example of how to send APDU command using I2C from Arduino UNO?

[sterretje]

Please read the sticky topics in the category where you posted (Uncategorized - Arduino Forum).

Topic moved.

[lastchancename]

I’m trying to figure out what APDU is… but Immguessing you want to send a text message witnbyte packed PDU formatting.

A good start would include what modems you’re using, and other details.
Have you read the midem reference guides for text messaging.

[krasnal]

Hallo,
I want to send APDU command to check out of reading card is ID-card. The APDU command is:

uint8_t SELECT_APDU[] = {
  0x00, /* CLA */
  0xA4, /* INS */
  0x04, /* P1  */
  0x00, /* P2  */
  0x07, /* Length of AID  */
  0xA0, 0x00, 0x00, 0x02, 0x47, 0x10, 0x01, /* AID - ID card*/
  0x00  /* Le  */
};

For SPI i can use:

bool success = nfc.inDataExchange(SELECT_APDU, sizeof(SELECT_APDU), response, &responseLength);

But I want de the same with I2C en the PN532.

[noiasca]

just iterate through your array and write byte by byte

something like

for (size_t i = 0; i < sizeof(SELECT_APDU); i++){
  Wire.write(SELECT_APDU[i]);
}