WebSVN – Code-Repo – Diff – /PIC Stuff/PIC_27J13/nfc_PN532.c



    nfc_data_p->packetbuffer[0] = PN532_COMMAND_SAMCONFIGURATION;
    nfc_data_p->packetbuffer[1] = 0x01; // Normal mode
    nfc_data_p->packetbuffer[2] = 0x14; // Timeout 50ms * 20 = 1s
    nfc_data_p->packetbuffer[3] = 0x01; // Use IRQ pin
 
    if (!NFC_Send_Command_Check_Ack(nfc_data_p->packetbuffer, 4))
        return 0;
 
    NFC_I2C_Read_Data(nfc_data_p->packetbuffer, 8);
 
    return (nfc_data_p->packetbuffer[7] == 0x15);
}
 
// Checks the firmware version of the PN5xx chip
NFC_FIRMWARE_VERSION NFC_Get_Firmware_Version(void) {
    NFC_FIRMWARE_VERSION response = {0, 0, 0, 0};
 
    // Create and send command
    nfc_data_p->packetbuffer[0] = PN532_COMMAND_GETFIRMWAREVERSION;
 
    if (!NFC_Send_Command_Check_Ack(nfc_data_p->packetbuffer, 1))
        return response;
 
    // Read back data from the PN532
    NFC_I2C_Read_Data(nfc_data_p->packetbuffer, 12);
 

 
    return response;
}
 
// Sends a command and waits a specified period for the ACK
unsigned char NFC_Send_Command_Check_Ack(unsigned char *cmd, unsigned char cmdlen) {
    unsigned int timer = 0;
 
    // Write the command
    NFC_I2C_Write_Cmd(cmd, cmdlen);
 

 
    return 1;
}
 
// Passive polling, waits for an ISO14443A target to enter the field
unsigned char NFC_Read_Passive_Target_ID(NFC_TargetDataMiFare *cardData) {
    
    nfc_data_p->packetbuffer[0] = PN532_COMMAND_INLISTPASSIVETARGET;
    nfc_data_p->packetbuffer[1] = 2; // Max 2 cards at once
    nfc_data_p->packetbuffer[2] = PN532_MIFARE_ISO14443A;  // Mifare only
 
    if (!NFC_Send_Command_Check_Ack(nfc_data_p->packetbuffer, 3))
        return 0;
 
    // Wait for IRQ line
    while (NFC_I2C_Read_Status() != PN532_I2C_READY);
 

    // Return the number of cards detected
    return nfc_data_p->packetbuffer[8];
}
 
// Active polling, returns number of cards in the field
unsigned char NFC_Poll_Targets(unsigned char number, unsigned char period, NFC_TargetDataMiFare *cardData) {
    
    nfc_data_p->packetbuffer[0] = PN532_COMMAND_INAUTOPOLL;
    nfc_data_p->packetbuffer[1] = number; // Number of polling
    nfc_data_p->packetbuffer[2] = period; // Polling period in units of 150ms
    nfc_data_p->packetbuffer[3] = 0x10; // Check for Mifare cards only
 
    if (!NFC_Send_Command_Check_Ack(nfc_data_p->packetbuffer, 4))
        return 0;
 
    // Wait for IRQ line
    while (NFC_I2C_Read_Status() != PN532_I2C_READY);
 

    for (i = 0; i < uidLen; i++) {
        nfc_data_p->packetbuffer[10 + i] = uid[i];
    }
 
    // Send frame and check for ACK
    if (!NFC_Send_Command_Check_Ack(nfc_data_p->packetbuffer, 10 + uidLen))
        return 0;
 
    // Read response from PN532
    NFC_I2C_Read_Data(nfc_data_p->packetbuffer, 12);
 

    nfc_data_p->packetbuffer[1] = 1; /* Card number */
    nfc_data_p->packetbuffer[2] = MIFARE_CMD_READ; /* Mifare Read command = 0x30 */
    nfc_data_p->packetbuffer[3] = blockNumber; /* Block Number (0..63 for 1K, 0..255 for 4K) */
 
    // Send frame and check for ACK
    if (!NFC_Send_Command_Check_Ack(nfc_data_p->packetbuffer, 4))
        return 0;
 
    // Read reponse
    NFC_I2C_Read_Data(nfc_data_p->packetbuffer, 26);
 

    for (i = 0; i < 16; i++) { /* Data Payload */
        nfc_data_p->packetbuffer[4 + i] = data[i];
    }
 
    // Send frame and check for ACK
    if (!NFC_Send_Command_Check_Ack(nfc_data_p->packetbuffer, 20))
        return 0;
 
    // Read response
    NFC_I2C_Read_Data(nfc_data_p->packetbuffer, 26);
 

Rev 148	Rev 154
Line 29...	Line 29...
29	`nfc_data_p->packetbuffer[0] = PN532_COMMAND_SAMCONFIGURATION;`	29	`nfc_data_p->packetbuffer[0] = PN532_COMMAND_SAMCONFIGURATION;`
30	`nfc_data_p->packetbuffer[1] = 0x01; // Normal mode`	30	`nfc_data_p->packetbuffer[1] = 0x01; // Normal mode`
31	`nfc_data_p->packetbuffer[2] = 0x14; // Timeout 50ms * 20 = 1s`	31	`nfc_data_p->packetbuffer[2] = 0x14; // Timeout 50ms * 20 = 1s`
32	`nfc_data_p->packetbuffer[3] = 0x01; // Use IRQ pin`	32	`nfc_data_p->packetbuffer[3] = 0x01; // Use IRQ pin`
33		33
34	`if (!NFC_sendCommandCheckAck(nfc_data_p->packetbuffer, 4))`	34	`if (!NFC_Send_Command_Check_Ack(nfc_data_p->packetbuffer, 4))`
35	`return 0;`	35	`return 0;`
36		36
37	`NFC_I2C_Read_Data(nfc_data_p->packetbuffer, 8);`	37	`NFC_I2C_Read_Data(nfc_data_p->packetbuffer, 8);`
38		38
39	`return (nfc_data_p->packetbuffer[7] == 0x15);`	39	`return (nfc_data_p->packetbuffer[7] == 0x15);`
40	`}`	40	`}`
41		41
42	`// Checks the firmware version of the PN5xx chip`	42	`// Checks the firmware version of the PN5xx chip`
43	`NFC_FIRMWARE_VERSION NFC_getFirmwareVersion(void) {`	43	`NFC_FIRMWARE_VERSION NFC_Get_Firmware_Version(void) {`
44	`NFC_FIRMWARE_VERSION response = {0, 0, 0, 0};`	44	`NFC_FIRMWARE_VERSION response = {0, 0, 0, 0};`
45		45
46	`// Create and send command`	46	`// Create and send command`
47	`nfc_data_p->packetbuffer[0] = PN532_COMMAND_GETFIRMWAREVERSION;`	47	`nfc_data_p->packetbuffer[0] = PN532_COMMAND_GETFIRMWAREVERSION;`
48		48
49	`if (!NFC_sendCommandCheckAck(nfc_data_p->packetbuffer, 1))`	49	`if (!NFC_Send_Command_Check_Ack(nfc_data_p->packetbuffer, 1))`
50	`return response;`	50	`return response;`
51		51
52	`// Read back data from the PN532`	52	`// Read back data from the PN532`
53	`NFC_I2C_Read_Data(nfc_data_p->packetbuffer, 12);`	53	`NFC_I2C_Read_Data(nfc_data_p->packetbuffer, 12);`
54		54
Line 64...	Line 64...
64		64
65	`return response;`	65	`return response;`
66	`}`	66	`}`
67		67
68	`// Sends a command and waits a specified period for the ACK`	68	`// Sends a command and waits a specified period for the ACK`
69	`unsigned char NFC_sendCommandCheckAck(unsigned char *cmd, unsigned char cmdlen) {`	69	`unsigned char NFC_Send_Command_Check_Ack(unsigned char *cmd, unsigned char cmdlen) {`
70	`unsigned int timer = 0;`	70	`unsigned int timer = 0;`
71		71
72	`// Write the command`	72	`// Write the command`
73	`NFC_I2C_Write_Cmd(cmd, cmdlen);`	73	`NFC_I2C_Write_Cmd(cmd, cmdlen);`
74		74
Line 89...	Line 89...
89		89
90	`return 1;`	90	`return 1;`
91	`}`	91	`}`
92		92
93	`// Passive polling, waits for an ISO14443A target to enter the field`	93	`// Passive polling, waits for an ISO14443A target to enter the field`
94	`unsigned char NFC_readPassiveTargetID(NFC_TargetDataMiFare *cardData) {`	94	`unsigned char NFC_Read_Passive_Target_ID(NFC_TargetDataMiFare *cardData) {`
95		95
96	`nfc_data_p->packetbuffer[0] = PN532_COMMAND_INLISTPASSIVETARGET;`	96	`nfc_data_p->packetbuffer[0] = PN532_COMMAND_INLISTPASSIVETARGET;`
97	`nfc_data_p->packetbuffer[1] = 2; // Max 2 cards at once`	97	`nfc_data_p->packetbuffer[1] = 2; // Max 2 cards at once`
98	`nfc_data_p->packetbuffer[2] = PN532_MIFARE_ISO14443A; // Mifare only`	98	`nfc_data_p->packetbuffer[2] = PN532_MIFARE_ISO14443A; // Mifare only`
99		99
100	`if (!NFC_sendCommandCheckAck(nfc_data_p->packetbuffer, 3))`	100	`if (!NFC_Send_Command_Check_Ack(nfc_data_p->packetbuffer, 3))`
101	`return 0;`	101	`return 0;`
102		102
103	`// Wait for IRQ line`	103	`// Wait for IRQ line`
104	`while (NFC_I2C_Read_Status() != PN532_I2C_READY);`	104	`while (NFC_I2C_Read_Status() != PN532_I2C_READY);`
105		105
Line 147...	Line 147...
147	`// Return the number of cards detected`	147	`// Return the number of cards detected`
148	`return nfc_data_p->packetbuffer[8];`	148	`return nfc_data_p->packetbuffer[8];`
149	`}`	149	`}`
150		150
151	`// Active polling, returns number of cards in the field`	151	`// Active polling, returns number of cards in the field`
152	`unsigned char NFC_pollTargets(unsigned char number, unsigned char period, NFC_TargetDataMiFare *cardData) {`	152	`unsigned char NFC_Poll_Targets(unsigned char number, unsigned char period, NFC_TargetDataMiFare *cardData) {`
153		153
154	`nfc_data_p->packetbuffer[0] = PN532_COMMAND_INAUTOPOLL;`	154	`nfc_data_p->packetbuffer[0] = PN532_COMMAND_INAUTOPOLL;`
155	`nfc_data_p->packetbuffer[1] = number; // Number of polling`	155	`nfc_data_p->packetbuffer[1] = number; // Number of polling`
156	`nfc_data_p->packetbuffer[2] = period; // Polling period in units of 150ms`	156	`nfc_data_p->packetbuffer[2] = period; // Polling period in units of 150ms`
157	`nfc_data_p->packetbuffer[3] = 0x10; // Check for Mifare cards only`	157	`nfc_data_p->packetbuffer[3] = 0x10; // Check for Mifare cards only`
158		158
159	`if (!NFC_sendCommandCheckAck(nfc_data_p->packetbuffer, 4))`	159	`if (!NFC_Send_Command_Check_Ack(nfc_data_p->packetbuffer, 4))`
160	`return 0;`	160	`return 0;`
161		161
162	`// Wait for IRQ line`	162	`// Wait for IRQ line`
163	`while (NFC_I2C_Read_Status() != PN532_I2C_READY);`	163	`while (NFC_I2C_Read_Status() != PN532_I2C_READY);`
164		164
Line 248...	Line 248...
248	`for (i = 0; i < uidLen; i++) {`	248	`for (i = 0; i < uidLen; i++) {`
249	`nfc_data_p->packetbuffer[10 + i] = uid[i];`	249	`nfc_data_p->packetbuffer[10 + i] = uid[i];`
250	`}`	250	`}`
251		251
252	`// Send frame and check for ACK`	252	`// Send frame and check for ACK`
253	`if (!NFC_sendCommandCheckAck(nfc_data_p->packetbuffer, 10 + uidLen))`	253	`if (!NFC_Send_Command_Check_Ack(nfc_data_p->packetbuffer, 10 + uidLen))`
254	`return 0;`	254	`return 0;`
255		255
256	`// Read response from PN532`	256	`// Read response from PN532`
257	`NFC_I2C_Read_Data(nfc_data_p->packetbuffer, 12);`	257	`NFC_I2C_Read_Data(nfc_data_p->packetbuffer, 12);`
258		258
Line 268...	Line 268...
268	`nfc_data_p->packetbuffer[1] = 1; /* Card number */`	268	`nfc_data_p->packetbuffer[1] = 1; /* Card number */`
269	`nfc_data_p->packetbuffer[2] = MIFARE_CMD_READ; /* Mifare Read command = 0x30 */`	269	`nfc_data_p->packetbuffer[2] = MIFARE_CMD_READ; /* Mifare Read command = 0x30 */`
270	`nfc_data_p->packetbuffer[3] = blockNumber; /* Block Number (0..63 for 1K, 0..255 for 4K) */`	270	`nfc_data_p->packetbuffer[3] = blockNumber; /* Block Number (0..63 for 1K, 0..255 for 4K) */`
271		271
272	`// Send frame and check for ACK`	272	`// Send frame and check for ACK`
273	`if (!NFC_sendCommandCheckAck(nfc_data_p->packetbuffer, 4))`	273	`if (!NFC_Send_Command_Check_Ack(nfc_data_p->packetbuffer, 4))`
274	`return 0;`	274	`return 0;`
275		275
276	`// Read reponse`	276	`// Read reponse`
277	`NFC_I2C_Read_Data(nfc_data_p->packetbuffer, 26);`	277	`NFC_I2C_Read_Data(nfc_data_p->packetbuffer, 26);`
278		278
Line 302...	Line 302...
302	`for (i = 0; i < 16; i++) { /* Data Payload */`	302	`for (i = 0; i < 16; i++) { /* Data Payload */`
303	`nfc_data_p->packetbuffer[4 + i] = data[i];`	303	`nfc_data_p->packetbuffer[4 + i] = data[i];`
304	`}`	304	`}`
305		305
306	`// Send frame and check for ACK`	306	`// Send frame and check for ACK`
307	`if (!NFC_sendCommandCheckAck(nfc_data_p->packetbuffer, 20))`	307	`if (!NFC_Send_Command_Check_Ack(nfc_data_p->packetbuffer, 20))`
308	`return 0;`	308	`return 0;`
309		309
310	`// Read response`	310	`// Read response`
311	`NFC_I2C_Read_Data(nfc_data_p->packetbuffer, 26);`	311	`NFC_I2C_Read_Data(nfc_data_p->packetbuffer, 26);`
312		312

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(root)/PIC Stuff/PIC_27J13/nfc_PN532.c @ 156 – Rev 148 → 154