/**
* @brief This fonction prepare the NDEF message with the URI data given in the structure
* @param pURI : pointer on structure that contain the URI information
* @param pNDEFMessage : pointer on the NDEF message
* @param size : to store the size of the NDEF message generated
*/
void NDEF_PrepareURIMessage ( sURI_Info *pURI, uint8_t *pNDEFMessage, uint16_t *size)
{
uint32_t uriSize, infoSize, totalSize, Offset = 0;
char type;
/* An URI can be included in a smart poster to add text to give instruction to user for instance */
/* URI (smart poster) Record Header */
/************************************/
/* 7 | 6 | 5 | 4 | 3 | 2 1 0 */
/*----------------------------------*/
/* MB ME CF SR IL TNF */ /* <---- CF=0, IL=0 and SR=1 TNF=1 NFC Forum Well-known type*/
/*----------------------------------*/
/* TYPE LENGTH */
/*----------------------------------*/
/* PAYLOAD LENGTH 3 */ /* <---- Used only if SR=0 */
/*----------------------------------*/
/* PAYLOAD LENGTH 2 */ /* <---- Used only if SR=0 */
/*----------------------------------*/
/* PAYLOAD LENGTH 1 */ /* <---- Used only if SR=0 */
/*----------------------------------*/
/* PAYLOAD LENGTH 0 */
/*----------------------------------*/
/* ID LENGTH */ /* <---- Not Used */
/*----------------------------------*/
/* TYPE */
/*----------------------------------*/
/* ID */ /* <---- Not Used */
/************************************/
/* We need to know the URI type in order to define if an abreviation is available */
type = getUriType(pURI->protocol);
/* URI : 1+URI for abreviate protocol*/
if (type != URI_ID_0x00)
uriSize = 1+strlen(pURI->URI_Message);
else /*: 1+protocol+URI else*/
uriSize = 1+strlen(pURI->protocol)+strlen(pURI->URI_Message);
/* Check if a Smart poster is needed */
if (pURI->Information[0] != '\0')
{
/* Info : 1+2+info */
infoSize = 1+ISO_ENGLISH_CODE_STRING_LENGTH+strlen(pURI->Information);
/* Total */
totalSize = 4+uriSize+4+infoSize;
if (uriSize > 255) totalSize+=3; /* Normal URI size */
if (infoSize > 255) totalSize+=3; /* Normal Info size */
/* SmartPoster header */
if (totalSize > 255)
{
pNDEFMessage[Offset++] = 0xC1;
pNDEFMessage[Offset++] = SMART_POSTER_TYPE_STRING_LENGTH;
pNDEFMessage[Offset++] = (totalSize & 0xFF000000)>>24;
pNDEFMessage[Offset++] = (totalSize & 0x00FF0000)>>16;
pNDEFMessage[Offset++] = (totalSize & 0x0000FF00)>>8;
pNDEFMessage[Offset++] = (totalSize & 0x000000FF);
}
int main() {
pc.baud(115200);
pc.format(8,SerialBase::None, 1);
sURI_Info URIout;
sURI_Info URIin;
int BlinkLEDCounter = 0;
memset(&URIin, 0x00, sizeof(URIin));
// All LEDs on NFC shield off
nfcled1 = 0;
nfcled2 = 0;
nfcled3 = 0;
pc.printf("NFC Example\n");
// Prepare URI NDEF message content
pc.printf("Prepare URI NDEF message content\n");
strcpy(URIout.protocol,URI_ID_0x01_STRING);
strcpy(URIout.URI_Message,"");
strcpy(URIout.Information,"\0");
pc.printf("Done\n\n");
/*pc.printf("URIout contents:\n");
pc.printf("URIout.protocol=%s\n", URIout.protocol);
pc.printf("URIout Type: %d\n", getUriType(URIout.protocol));
pc.printf("URIout.URI_Message=%s\n\n", URIout.URI_Message);*/
pc.printf("Initializing Tag Type 4 Access ... ");
// LED1 (green) on NCF shield indicates progress
// blinking = initialization in progress
// solid = init successfull
BlinkLEDCounter = 0;
while(TT4_Init()!=SUCCESS)
{
if(BlinkLEDCounter < BLINK_LED_CYCLES)
{
BlinkLEDCounter++;
}
else
{
BlinkLEDCounter=0;
nfcled1 = !nfcled1;
}
}
// success
nfcled1 = 1;
pc.printf("SUCCESS\n\n");
while(1){
// Write URI
// LED2 (blue) on NCF shield indicates progress
// blinking = write URI in progress
// solid = write URI successfull
pc.printf("null uri writing");
BlinkLEDCounter = 0;
while (TT4_WriteURI(&URIout) != SUCCESS)
{
if(BlinkLEDCounter < BLINK_LED_CYCLES)
{
BlinkLEDCounter++;
}
else
{
BlinkLEDCounter=0;
nfcled2 = !nfcled2;
}
}
// success
nfcled2 = 1;
pc.printf("writed\n\n");
// Read URI
// LED3 (orange) on NCF shield indicates progress
// blinking = read URI in progress
// solid = read URI successfull
pc.printf("Reading back URI ... ");
BlinkLEDCounter = 0;
wait_ms(3000);
while(TT4_ReadURI(&URIin) != SUCCESS || strlen(URIin.URI_Message) == 0)
{
wait_ms(1000);
if(BlinkLEDCounter < BLINK_LED_CYCLES)
{
BlinkLEDCounter++;
}
else
{
BlinkLEDCounter=0;
nfcled3 = !nfcled3;
}
}
// success
nfcled3 = 1;
pc.printf("SUCCESS\n\n");
// Display contents read back
pc.printf("URIin contents:\n");
pc.printf("URIin.protocol=%s\n", URIin.protocol);
pc.printf("URIin Type: %d\n", getUriType(URIin.protocol));
pc.printf("URIin.URI_Message=%s\n\n", URIin.URI_Message);
// loop forever
pc.printf("endLoop\n\n");
}
while(1)
{
// blink LED on Nucleo board when done
wait(0.5);
myled = !myled;
}
}
