dotnfc Tang / LibPN532

PN532 Driver library This library provides an abstract API to drive the pn532 nfc chip, with I2C/HSU/SPI interface. Its based on the Seeed Studio's Arduino version.

Dependents:   PN532_ReadUid Nfctest2

PN532/llcp.h@1:b5922b3b3257, 2016-09-13 (annotated)

Committer:
dotnfc
Date:
Tue Sep 13 06:17:35 2016 +0000
Revision:
1:b5922b3b3257
Parent:
0:db8030e71f55 
Remove ununsed files.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dotnfc 0:db8030e71f55 1
dotnfc 0:db8030e71f55 2 #ifndef __LLCP_H__
dotnfc 0:db8030e71f55 3 #define __LLCP_H__
dotnfc 0:db8030e71f55 4
dotnfc 0:db8030e71f55 5 #include "mac_link.h"
dotnfc 0:db8030e71f55 6
dotnfc 0:db8030e71f55 7 #define LLCP_DEFAULT_TIMEOUT 20000
dotnfc 0:db8030e71f55 8 #define LLCP_DEFAULT_DSAP 0x04
dotnfc 0:db8030e71f55 9 #define LLCP_DEFAULT_SSAP 0x20
dotnfc 0:db8030e71f55 10
dotnfc 0:db8030e71f55 11 class LLCP {
dotnfc 0:db8030e71f55 12 public:
dotnfc 0:db8030e71f55 13 LLCP(PN532Interface &interface) : link(interface) {
dotnfc 0:db8030e71f55 14 headerBuf = link.getHeaderBuffer(&headerBufLen);
dotnfc 0:db8030e71f55 15 ns = 0;
dotnfc 0:db8030e71f55 16 nr = 0;
dotnfc 0:db8030e71f55 17 };
dotnfc 0:db8030e71f55 18
dotnfc 0:db8030e71f55 19 /**
dotnfc 0:db8030e71f55 20 * @brief Actiave PN532 as a target
dotnfc 0:db8030e71f55 21 * @param timeout max time to wait, 0 means no timeout
dotnfc 0:db8030e71f55 22 * @return > 0 success
dotnfc 0:db8030e71f55 23 * = 0 timeout
dotnfc 0:db8030e71f55 24 * < 0 failed
dotnfc 0:db8030e71f55 25 */
dotnfc 0:db8030e71f55 26 int8_t activate(uint16_t timeout = 0);
dotnfc 0:db8030e71f55 27
dotnfc 0:db8030e71f55 28 int8_t waitForConnection(uint16_t timeout = LLCP_DEFAULT_TIMEOUT);
dotnfc 0:db8030e71f55 29
dotnfc 0:db8030e71f55 30 int8_t waitForDisconnection(uint16_t timeout = LLCP_DEFAULT_TIMEOUT);
dotnfc 0:db8030e71f55 31
dotnfc 0:db8030e71f55 32 int8_t connect(uint16_t timeout = LLCP_DEFAULT_TIMEOUT);
dotnfc 0:db8030e71f55 33
dotnfc 0:db8030e71f55 34 int8_t disconnect(uint16_t timeout = LLCP_DEFAULT_TIMEOUT);
dotnfc 0:db8030e71f55 35
dotnfc 0:db8030e71f55 36 /**
dotnfc 0:db8030e71f55 37 * @brief write a packet, the packet should be less than (255 - 2) bytes
dotnfc 0:db8030e71f55 38 * @param header packet header
dotnfc 0:db8030e71f55 39 * @param hlen length of header
dotnfc 0:db8030e71f55 40 * @param body packet body
dotnfc 0:db8030e71f55 41 * @param blen length of body
dotnfc 0:db8030e71f55 42 * @return true success
dotnfc 0:db8030e71f55 43 * false failed
dotnfc 0:db8030e71f55 44 */
dotnfc 0:db8030e71f55 45 bool write(const uint8_t *header, uint8_t hlen, const uint8_t *body = 0, uint8_t blen = 0);
dotnfc 0:db8030e71f55 46
dotnfc 0:db8030e71f55 47 /**
dotnfc 0:db8030e71f55 48 * @brief read a packet, the packet will be less than (255 - 2) bytes
dotnfc 0:db8030e71f55 49 * @param buf the buffer to contain the packet
dotnfc 0:db8030e71f55 50 * @param len lenght of the buffer
dotnfc 0:db8030e71f55 51 * @return >=0 length of the packet
dotnfc 0:db8030e71f55 52 * <0 failed
dotnfc 0:db8030e71f55 53 */
dotnfc 0:db8030e71f55 54 int16_t read(uint8_t *buf, uint8_t len);
dotnfc 0:db8030e71f55 55
dotnfc 0:db8030e71f55 56 uint8_t *getHeaderBuffer(uint8_t *len) {
dotnfc 0:db8030e71f55 57 uint8_t *buf = link.getHeaderBuffer(len);
dotnfc 0:db8030e71f55 58 len -= 3; // I PDU header has 3 bytes
dotnfc 0:db8030e71f55 59 return buf;
dotnfc 0:db8030e71f55 60 };
dotnfc 0:db8030e71f55 61
dotnfc 0:db8030e71f55 62 private:
dotnfc 0:db8030e71f55 63 MACLink link;
dotnfc 0:db8030e71f55 64 uint8_t mode;
dotnfc 0:db8030e71f55 65 uint8_t ssap;
dotnfc 0:db8030e71f55 66 uint8_t dsap;
dotnfc 0:db8030e71f55 67 uint8_t *headerBuf;
dotnfc 0:db8030e71f55 68 uint8_t headerBufLen;
dotnfc 0:db8030e71f55 69 uint8_t ns; // Number of I PDU Sent
dotnfc 0:db8030e71f55 70 uint8_t nr; // Number of I PDU Received
dotnfc 0:db8030e71f55 71
dotnfc 0:db8030e71f55 72 static uint8_t SYMM_PDU[2];
dotnfc 0:db8030e71f55 73 };
dotnfc 0:db8030e71f55 74
dotnfc 0:db8030e71f55 75 #endif // __LLCP_H__