#include "sysinit.h"
#include "drivers/sensors/pn532/pn532.h"
-#include "drivers/sensors/pn532/pn532_drvr.h"
+#include "drivers/sensors/pn532/pn532_bus.h"
/**************************************************************************/
/*!
int main (void)
{
#ifdef CFG_INTERFACE
- #error "CFG_INTERFACE must be disabled in projectconfig.h for this demo"
+ //#error "CFG_INTERFACE must be disabled in projectconfig.h for this demo"
#endif
#if !defined CFG_PRINTF_USBCDC
#error "CFG_PRINTF_USBCDC must be enabled in projectconfig.h for this demo"
// Configure cpu and mandatory peripherals
systemInit();
- // Wait 5 second for someone to open the USB connection for printf
+ // Wait a bit for someone to open the USB connection for printf
systickDelay(5000);
// Initialise the PN532
pn532Init();
- byte_t response[256];
- size_t responseLen;
pn532_error_t error;
+ byte_t response[64];
+ size_t responseLen;
- // Setup command to initialise a single ISO14443A target at 106kbps
+ // Setup command to initialise a single ISO14443A target at 106kbps (Mifare Classic, Ultralight, etc.)
byte_t abtCommand[] = { PN532_COMMAND_INLISTPASSIVETARGET, 0x01, PN532_MODULATION_ISO14443A_106KBPS };
while (1)
{
printf("%s", CFG_PRINTF_NEWLINE);
- printf("Wait for an ISO14443A card (Mifare Classic, etc.)%s", CFG_PRINTF_NEWLINE);
+ printf("Waiting for an ISO14443A card (Mifare Classic, etc.)%s", CFG_PRINTF_NEWLINE);
- // Send the command
+ // Send the command (and handle the most common errors)
error = pn532Write(abtCommand, sizeof(abtCommand));
-
- // Wait until we get a response or an unexpected error message
- do
+ if (error)
{
- error = pn532Read(response, &responseLen);
- systickDelay(25);
+ // Something went wrong sending the command (probably the bus selection or wiring)
+ switch(error)
+ {
+ case (PN532_ERROR_NOACK):
+ case (PN532_ERROR_INVALIDACK):
+ // No ACK response frame received from the PN532
+ printf("Ooops ... No valid ACK frame received!%s", CFG_PRINTF_NEWLINE);
+ break;
+ case (PN532_ERROR_I2C_NACK):
+ // No ACK bit received to I2C start ... not same as PN532 ACK frame (bus pins not set correctly?)
+ printf("Ooops ... No I2C ACK received! Are the bus select pins sets to I2C?%s", CFG_PRINTF_NEWLINE);
+ break;
+ case (PN532_ERROR_READYSTATUSTIMEOUT):
+ // Timed out waiting for the ready bit to clear ... this can be intentional, though, in the
+ // case of PN532_COMMAND_INLISTPASSIVETARGET since it will only clear when a card
+ // enters the magnetic field! Handle with caution because it isn't always an error
+ // Note: Only valid for I2C and SPI
+ printf("Timed out waiting for Ready/IRQ%s", CFG_PRINTF_NEWLINE);
+ break;
+ default:
+ printf("Ooops ... something went wrong! [PN532 Error Code: 0x%02X]%s", error, CFG_PRINTF_NEWLINE);
+ break;
+ }
}
- #ifdef PN532_UART
- while (error == PN532_ERROR_RESPONSEBUFFEREMPTY);
- #endif
- #ifdef PN532_SPI
- while ((error == PN532_ERROR_RESPONSEBUFFEREMPTY) || (error = PN532_ERROR_SPIREADYSTATUSTIMEOUT));
- #endif
-
- // Print the card details if possible
- if (!error)
+ else
{
- /* Response for ISO14443A 106KBPS (Mifare Classic, etc.)
- See UM0701-02 section 7.3.5 for more information
-
- byte Description
- ------------- ------------------------------------------
- b7 Tags Found
- b8 Tag Number (only one used in this example)
- b9..10 SENS_RES
- b11 SEL_RES
- b12 NFCID Length
- b13..NFCIDLen NFCID
-
- SENS_RES SEL_RES Manufacturer/Card Type NFCID Len
- -------- ------- ----------------------- ---------
- 00 04 08 NXP Mifare Classic 1K 4 bytes */
+ // Commmand seems to have gone through ...
+ do
+ {
+ // Keep reading until we get a response or an unexpected error condition
+ error = pn532Read(response, &responseLen);
+ systickDelay(25);
+ }
+ while (error == PN532_ERROR_RESPONSEBUFFEREMPTY);
printf("%s", CFG_PRINTF_NEWLINE);
- printf("%-12s: %d %s", "Tags Found", response[7], CFG_PRINTF_NEWLINE);
- printf("%-12s: %02X %02X %s", "SENS_RES", response[9], response[10], CFG_PRINTF_NEWLINE);
- printf("%-12s: %02X %s", "SEL_RES", response[11], CFG_PRINTF_NEWLINE);
- printf("%-12s: ", "NFCID");
- size_t pos;
- for (pos=0; pos < response[12]; pos++)
+ printf("%-12s: ", "Received");
+ pn532PrintHex(response, responseLen);
+
+ // Try to handle some potential frame errors
+ // Unhandled errors are caught further down
+ switch (error)
{
- printf("%02x ", response[13 + pos]);
+ case (PN532_ERROR_PREAMBLEMISMATCH):
+ // Frame should start with 0x00 0x00 0xFF!
+ printf("Response frame doesn't start with expected preamble (00 00 FF)%s", CFG_PRINTF_NEWLINE);
+ break;
+ case (PN532_ERROR_APPLEVELERROR):
+ printf("Application level error reported by PN532%s", CFG_PRINTF_NEWLINE);
+ break;
+ case (PN532_ERROR_LENCHECKSUMMISMATCH):
+ printf("Frame length check/checksum mismatch%s", CFG_PRINTF_NEWLINE);
+ break;
+ }
+
+ // Print the card details if possible
+ if (!error)
+ {
+ /* Response for ISO14443A 106KBPS (Mifare Classic, etc.)
+ See UM0701-02 section 7.3.5 for more information
+
+ byte Description
+ ------------- ------------------------------------------
+ b7 Tags Found
+ b8 Tag Number (only one used in this example)
+ b9..10 SENS_RES
+ b11 SEL_RES
+ b12 NFCID Length
+ b13..NFCIDLen NFCID
+
+ SENS_RES SEL_RES Manufacturer/Card Type NFCID Len
+ -------- ------- ----------------------- ---------
+ 00 04 08 NXP Mifare Classic 1K 4 bytes */
+
+ printf("%-12s: %d %s", "Tags Found", response[7], CFG_PRINTF_NEWLINE);
+ printf("%-12s: %02X %02X %s", "SENS_RES", response[9], response[10], CFG_PRINTF_NEWLINE);
+ printf("%-12s: %02X %s", "SEL_RES", response[11], CFG_PRINTF_NEWLINE);
+ printf("%-12s: ", "NFCID");
+ size_t pos;
+ for (pos=0; pos < response[12]; pos++)
+ {
+ printf("%02x ", response[13 + pos]);
+ }
+ printf(CFG_PRINTF_NEWLINE);
+ if ((response[9] == 0x00) && (response[10] == 0x04) && (response[11] == 0x08))
+ {
+ printf("Seems to be a Mifare Classic 1K Card%s", CFG_PRINTF_NEWLINE);
+ }
+ }
+ else
+ {
+ // Oops .... something bad happened. Check 'error'
+ printf("Ooops! Error %02X %s", error, CFG_PRINTF_NEWLINE);
}
- printf(CFG_PRINTF_NEWLINE);
- }
- else
- {
- // Oops .... something bad happened. Check 'error'
- printf("Ooops! Error %02X %s", error, CFG_PRINTF_NEWLINE);
}
// Wait at least one second before trying again
projects / hackover2013-badge-firmware.git / blobdiff