mac_link.h

00001 
00002 
00003 #ifndef __MAC_LINK_H__
00004 #define __MAC_LINK_H__
00005 
00006 #include "PN532.h "
00007 
00008 /**
00009  * The MACLink class
00010  */
00011 class MACLink {
00012 public:
00013     MACLink(PN532Interface &interface) : pn532(interface) {
00014 
00015     };
00016     
00017     /**
00018      * @brief    Activate PN532 as a target
00019      * @param    timeout max time to wait, 0 means no timeout
00020      * @return   > 0     success
00021      *           = 0     timeout
00022      *           < 0     failed
00023      */
00024     int8_t activateAsTarget(uint16_t timeout = 0);
00025 
00026     /**
00027      * @brief    write a PDU packet, the packet should be less than (255 - 2) bytes
00028      * @param    header  packet header
00029      * @param    hlen    length of header
00030      * @param    body    packet body
00031      * @param    blen    length of body
00032      * @return   true    success
00033      *           false   failed
00034      */
00035     bool write(const uint8_t *header, uint8_t hlen, const uint8_t *body = 0, uint8_t blen = 0);
00036 
00037     /**
00038      * @brief    read a PDU packet, the packet will be less than (255 - 2) bytes
00039      * @param    buf     the buffer to contain the PDU packet
00040      * @param    len     lenght of the buffer
00041      * @return   >=0     length of the PDU packet 
00042      *           <0      failed
00043      */
00044     int16_t read(uint8_t *buf, uint8_t len);
00045 
00046     uint8_t *getHeaderBuffer(uint8_t *len) {
00047         return pn532.getBuffer(len);
00048     };
00049     
00050 private:
00051     PN532 pn532;
00052 };
00053 
00054 #endif // __MAC_LINK_H__