basic_rf.h

zigbee子节点源代码

/* 
    The protocol uses 802.15.4 MAC compliant data and acknowledgment packets, however it contains only  
    a small subset of the 802.15.4 standard:                                                            
        - Association, scanning, beacons is not implemented                                             
        - No defined coordinator/device roles (peer-to-peer, all nodes are equal)                       
        - Waits for the channel to become ready, but does not check CCA twice (802.15.4 CSMA-CA)        
        - Does not retransmit packets                                                                   
        - Can not communicate with other networks (using a different PAN identifier) 

    Frame formats:                                                                                      
    Data packets:                                                                                       
        [Preambles (4)][SFD (1)][Length (1)][Frame control field (2)][Sequence number (1)][PAN ID (2)]  
        [Dest. address (2)][Source address (2)][Payload (Length - 2+1+2+2+2)][Frame check sequence (2)] 
                                                                                                        
    Acknowledgment packets:                                                                             
        [Preambles (4)][SFD (1)][Length = 5 (1)][Frame control field (2)][Sequence number (1)]          
        [Frame check sequence (2)]                                                                      
*/

#ifndef BASIC_RF_H
#define BASIC_RF_H

//General constants

#define PANID                    0x2420
#define RFCHANNEL                26

// Symbol period = 16 us
#define RF_aSymbolPeriod       16

// The time it takes for the acknowledgment frame to be received after the data packet has been transmitted
#define RF_aAckPeriod	       (16 * 2 * ((4 + 1) + (1) + (2 + 1) + (2)))

void basicRfReceiveOn(void);

void basicRfReceiveOff(void);

void basicRfInit(UINT8 channel, WORD panId, WORD myAddr);


/*
    SIGNAL(SIG_INTERRUPT0) - CC2420 FIFOP interrupt service routine
    Note:   When a packet has been completely received, this ISR will extract the data from the RX FIFO. 
            Packets are acknowledged automatically by CC2420 through the auto-acknowledgment feature.
*/
// SIGNAL(SIG_INTERRUPT0)

#endif