1 // **************************************************************************** 2 // Custom DPA Handler code example - Sending asynchronous request from Node * 3 // **************************************************************************** 4 // Copyright (c) IQRF Tech s.r.o. 5 // 6 // File: $RCSfile: CustomDpaHandler-AsyncRequest.c,v $ 7 // Version: $Revision: 1.31 $ 8 // Date: $Date: 2018/06/14 15:57:09 $ 9 // 10 // Revision history: 11 // 2017/03/13 Release for DPA 3.00 12 // 2015/08/05 Release for DPA 2.20 13 // 2014/10/31 Release for DPA 2.10 14 // 2014/04/30 Release for DPA 2.00 15 // 16 // **************************************************************************** 17 18 // Online DPA documentation http://www.iqrf.org/DpaTechGuide/ 19 20 // Default IQRF include (modify the path according to your setup) 21 #include "IQRF.h" 22 23 // Uncomment to implement Custom DPA Handler for Coordinator (actually not needed as we do not used EEPROMs) 24 //#define COORDINATOR_CUSTOM_HANDLER 25 26 // Default DPA header (modify the path according to your setup) 27 #include "DPA.h" 28 // Default Custom DPA Handler header (modify the path according to your setup) 29 #include "DPAcustomHandler.h" 30 31 // This example shows how to send asynchronous request from Node to the coordinator or its master device 32 33 // Must be the 1st defined function in the source code in order to be placed at the correct FLASH location! 34 //############################################################################################ 35 bit CustomDpaHandler() 36 //############################################################################################ 37 { 38 // Handler presence mark 39 clrwdt(); 40 41 // Packet ID 42 static uns8 pid; 43 44 // Detect DPA event to handle 45 switch ( GetDpaEvent() ) 46 { 47 #ifdef DpaEvent_Interrupt 48 // ------------------------------------------------- 49 case DpaEvent_Interrupt: 50 // Do an extra quick background interrupt work 51 // ! The time spent handling this event is critical.If there is no interrupt to handle return immediately otherwise keep the code as fast as possible. 52 // ! Make sure the event is the 1st case in the main switch statement at the handler routine.This ensures that the event is handled as the 1st one. 53 // ! It is desirable that this event is handled with immediate return even if it is not used by the custom handler because the Interrupt event is raised on every MCU interrupt and the “empty” return handler ensures the shortest possible interrupt routine response time. 54 // ! Only global variables or local ones marked by static keyword can be used to allow reentrancy. 55 // ! Make sure race condition does not occur when accessing those variables at other places. 56 // ! Make sure( inspect.lst file generated by C compiler ) compiler does not create any hidden temporary local variable( occurs when using division, multiplication or bit shifts ) at the event handler code.The name of such variable is usually Cnumbercnt. 57 // ! Do not call any OS functions except setINDFx(). 58 // ! Do not use any OS variables especially for writing access. 59 // ! All above rules apply also to any other function being called from the event handler code, although calling any function from Interrupt event is not recommended because of additional MCU stack usage. 60 61 return TRUE; 62 #endif 63 64 // ------------------------------------------------- 65 case DpaEvent_Idle: 66 { 67 // Do a background work when RF packet is not received 68 uns16 btnCnt = 1000 + 1; 69 while ( buttonPressed && --btnCnt != 0 ) 70 waitMS( 1 ); 71 72 // Button was pressed for at least the 100 ms 73 if ( btnCnt < 1000 - 100 ) 74 { 75 // Try to find out whether Coordinator peripheral is on, so we are [CN] device and have to switch the channel and mode 76 // Enumerate peripherals 77 _PNUM = PNUM_ENUMERATION; 78 _PCMD = CMD_GET_PER_INFO; 79 _DpaDataLength = 0; 80 DpaApiLocalRequest(); 81 // Remember if peripheral is on 82 bit isCoordinatorPeripheralOn = FALSE; 83 if ( ( _DpaMessage.EnumPeripheralsAnswer.EmbeddedPers[PNUM_COORDINATOR / 8] & ( 1 << ( PNUM_COORDINATOR % 8 ) ) ) != 0 ) 84 isCoordinatorPeripheralOn = TRUE; 85 86 // Packet ID 87 PID = ++pid; 88 // Number of hops = my VRN 89 RTHOPS = ntwVRN; 90 // No DPA Params used 91 _DpaParams = 0; 92 93 // Data is sent to the Coordinator 94 if ( btnCnt == 0 ) 95 { 96 // To the coordinator master if button pressed > 0.5s 97 _NADR = COORDINATOR_ADDRESS; 98 pulseLEDR(); 99 } 100 else 101 { 102 // Otherwise to coordinator the local device 103 _NADR = LOCAL_ADDRESS; 104 pulseLEDG(); 105 } 106 _NADRhigh = 0; 107 108 // Use IO peripheral to work with LEDs even if LED peripherals are not present 109 _PNUM = PNUM_IO; 110 // Make a LEDR pulse 111 _PCMD = CMD_IO_SET; 112 // Any HWPID 113 _HWPID = HWPID_DoNotCheck; 114 115 // LEDR=1 => Set PORTA.2 to 1 116 _DpaMessage.PerIoDirectionAndSet_Request.Triplets[0].Port = PNUM_IO_PORTA; // PORTA 117 _DpaMessage.PerIoDirectionAndSet_Request.Triplets[0].Mask = 0b0000.0100; // bit 2 118 _DpaMessage.PerIoDirectionAndSet_Request.Triplets[0].Value = 0b0000.0100; // bit 2 = 1 119 120 // 64 ms pulse 121 _DpaMessage.PerIoDirectionAndSet_Request.Delays[1].Header = PNUM_IO_DELAY; // delay 122 _DpaMessage.PerIoDirectionAndSet_Request.Delays[1].Delay = 64; // 64 123 124 // LEDR=0 => Set PORTA.2 to 0 125 _DpaMessage.PerIoDirectionAndSet_Request.Triplets[2].Port = PNUM_IO_PORTA; // PORTA 126 _DpaMessage.PerIoDirectionAndSet_Request.Triplets[2].Mask = 0b0000.0100; // bit 2 127 _DpaMessage.PerIoDirectionAndSet_Request.Triplets[2].Value = 0b0000.0000; // bit 2 = 0 128 129 // Setup the correct length of data 130 _DpaDataLength = 3 * sizeof( _DpaMessage.PerIoDirectionAndSet_Request.Triplets[0] ); 131 132 if ( isCoordinatorPeripheralOn ) 133 { 134 // Work again as a node 135 setNodeMode(); 136 // A channel of the main network 137 DpaApiSetRfDefaults(); 138 } 139 140 // Transmit DPA message with DPA Value equal the lastRSSI (can be any other value) 141 DpaApiRfTxDpaPacket( lastRSSI, 0x7F ); 142 143 // Wait for the button to be released (could be done in cleaner way w/o active waiting at this point of code ...) 144 while ( buttonPressed ) 145 clrwdt(); 146 } 147 } 148 break; 149 } 150 151 DpaHandleReturnFALSE: 152 return FALSE; 153 } 154 //############################################################################################ 155 // Default Custom DPA Handler header; 2nd include to implement Code bumper to detect too long code of the Custom DPA Handler (modify the path according to your setup) 156 #include "DPAcustomHandler.h" 157 //############################################################################################