always send a short (10ms) preamble, fixes more lost-packet problems

[fhem-stuff] / culfw / culfw-asksin-fix.diff

Index: clib/rf_asksin.c
===================================================================
--- clib/rf_asksin.c	(revision 373)
+++ clib/rf_asksin.c	(working copy)
@@ -11,7 +11,7 @@
 
 uint8_t asksin_on = 0;
 
-const uint8_t PROGMEM ASKSIN_CFG[50] = {
+const uint8_t PROGMEM ASKSIN_CFG[] = {
      0x00, 0x07,
      0x02, 0x2e,
      0x03, 0x0d,
@@ -26,16 +26,18 @@
      0x11, 0x93,
      0x12, 0x03,
      0x15, 0x34,
-     0x17, 0x30, // always go into IDLE
+     0x17, 0x3F, // always go into RX, CCA, ELV uses 0x03
      0x18, 0x18,
      0x19, 0x16,
      0x1B, 0x43,
      0x21, 0x56,
      0x25, 0x00,
      0x26, 0x11,
+     0x29, 0x59,
+     0x2c, 0x81,
      0x2D, 0x35,
      0x3e, 0xc3,
-     0xff
+     0xff, 0xff
 };
 
 void
@@ -56,7 +58,7 @@
   my_delay_us(100);
 
   // load configuration
-  for (uint8_t i = 0; i<50; i += 2) {
+  for (uint8_t i = 0; i < sizeof(ASKSIN_CFG); i += 2) {
        
     if (pgm_read_byte( &ASKSIN_CFG[i] )>0x40)
       break;
@@ -67,7 +69,9 @@
   
   ccStrobe( CC1100_SCAL );
 
-  my_delay_ms(1);
+  my_delay_ms(4);
+
+  ccRX();
 }
 
 void
@@ -97,14 +101,10 @@
     }
     
     rssi = cc1100_sendbyte( 0 );
+    /* LQI = */ cc1100_sendbyte( 0 );
     
     CC1100_DEASSERT;
 
-    ccStrobe( CC1100_SFRX  );
-    ccStrobe( CC1100_SIDLE );
-    ccStrobe( CC1100_SNOP  );
-    ccStrobe( CC1100_SRX   );
-
     dec[0] = enc[0];
     dec[1] = (~enc[1]) ^ 0x89;
     
@@ -113,7 +113,6 @@
     
     dec[l] = enc[l] ^ dec[2];
     
-    
     if (tx_report & REP_BINTIME) {
       
       DC('a');
@@ -133,24 +132,14 @@
     }
 
     return;
-       
   }
-       
-       
-  switch (cc1100_readReg( CC1100_MARCSTATE )) {
-            
-       // RX_OVERFLOW
-  case 17:
-       // IDLE
-  case 1:
-    ccStrobe( CC1100_SFRX  );
-    ccStrobe( CC1100_SIDLE );
-    ccStrobe( CC1100_SNOP  );
-    ccStrobe( CC1100_SRX   );
-    break;
-       
-  }
 
+  if (cc1100_readReg( CC1100_MARCSTATE ) == MARCSTATE_RXFIFO_OVERFLOW) {
+      ccStrobe( CC1100_SFRX  );
+      ccStrobe( CC1100_SIDLE );
+      ccStrobe( CC1100_SNOP  );
+      ccStrobe( CC1100_SRX   );
+  }
 }
 
 void
@@ -173,20 +162,7 @@
     my_delay_ms(3);             // 3ms: Found by trial and error
   }
 
-  ccStrobe(CC1100_SIDLE);
-  ccStrobe(CC1100_SFRX );
-  ccStrobe(CC1100_SFTX );
-
-  if (dec[2] & (1 << 4)) { //BURST-bit set?
-    ccStrobe(CC1100_STX  ); //We need to send a burst
-
-    //According to ELV, devices get activated every 300ms, so send burst for 360ms
-    for(l = 0; l < 3; l++)
-      my_delay_ms(120); //arg is uint_8, so loop
-  }
-
   // "crypt"
-
   enc[0] = dec[0];
   enc[1] = (~dec[1]) ^ 0x89;
 
@@ -195,6 +171,15 @@
   
   enc[l] = dec[l] ^ dec[2];
 
+  ccTX();
+  if (dec[2] & (1 << 4)) { // BURST-bit set?
+    // According to ELV, devices get activated every 300ms, so send burst for 360ms
+    for(l = 0; l < 3; l++)
+      my_delay_ms(120); // arg is uint_8, so loop
+  } else {
+  	my_delay_ms(10);
+  }
+
   // send
   CC1100_ASSERT;
   cc1100_sendbyte(CC1100_WRITE_BURST | CC1100_TXFIFO);
@@ -205,12 +190,10 @@
 
   CC1100_DEASSERT;
 
-  ccStrobe( CC1100_SFRX  );
-  ccStrobe( CC1100_STX   );
+  // wait for TX to finish
+  while(cc1100_readReg( CC1100_MARCSTATE ) == MARCSTATE_TX)
+    ;
   
-  while( cc1100_readReg( CC1100_MARCSTATE ) != 1 )
-    my_delay_ms(5);
-  
   if(asksin_on) {
     ccRX();
   } else {