Diff: arq.h

Revision:

0:8e06c9b8b7f6

diff -r 000000000000 -r 8e06c9b8b7f6 arq.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/arq.h	Tue May 25 17:45:26 2021 +0000
@@ -0,0 +1,54 @@
+#include"MicroBit.h"
+//#define ARQ_DEBUG
+
+#define ARQ_ID              4000
+#define ARQ_MSG_RECVD_EVT   1
+#define ARQ_MSG_SEND_FAIL   2
+#define ARQ_MSG_ACK_RECVD   3
+#define ARQ_POW_RECVD_EVT   4
+#define ARQ_POW_SEND_FAIL   5
+#define ARQ_POW_ACK_RECVD   6
+
+#ifndef ARQ_H
+#define ARQ_H
+
+class Arq
+{
+    public:
+    unsigned char power;    //power of transmitter
+    unsigned char received_power;
+    unsigned int timeout;   //time after send with no ACK before resend in microseconds CURRENTLY IRRELEVANT!! 
+    unsigned int maxtries;  //max number of attempts at sending before give up :( (default 10)
+    unsigned int mintries;  //min number of attempts allowable (default 1)
+    unsigned int tries;     //number of attempts at last go
+    unsigned int rssi;      //rssi from last ACK received i.e. rssi reported by receiver
+    unsigned int min_rssi;  //rssi below which power can be reduced (default 70)
+
+    MicroBit *uBit;
+    PacketBuffer packet;
+    
+    Arq(MicroBit *bit);
+    ~Arq(){};
+    
+    void off();
+    void receive();
+    void listen(MicroBitEvent e);
+    void send(PacketBuffer packet);
+
+    void incPower();
+    void decPower();
+};
+
+#endif
+
+//1st byte ACK,POWER_TEST or MESSAGE if ACK, RSSI of RECEIVED MESSAGE ALSO
+//128   64   32   16   8   4   2   1
+//  1    1    1    0   0   0   0   0  - ACK  -98 RSSI
+//  1    0    1    1   0   0   0   1  - ACK  -49 RSSI
+//  0    0    0    0   0   0   0   0  - POWER_TEST
+//  0    1    1    1   1   1   1   1  - MESSAGE
+
+//if POWER_TEST 2nd byte is power
+//if MESSAGE 2nd byte is start of message packet[1]
+
+ 
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