From: Michael Gernoth <michael@gernoth.net>
Date: Thu, 20 Jun 2013 20:24:29 +0000 (+0200)
Subject: try even harder to not drop any packets
X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/fhem-stuff/commitdiff_plain/532a7bf0b5af89a860126c534048a9923cf516d1

try even harder to not drop any packets
---

diff --git a/culfw/culfw-asksin-fix.diff b/culfw/culfw-asksin-fix.diff
index 5c8db33..07a587f 100644
--- a/culfw/culfw-asksin-fix.diff
+++ b/culfw/culfw-asksin-fix.diff
@@ -2,16 +2,24 @@ Index: clib/rf_asksin.c
 ===================================================================
 --- clib/rf_asksin.c	(revision 373)
 +++ clib/rf_asksin.c	(working copy)
-@@ -11,7 +11,7 @@
+@@ -11,13 +11,13 @@
  
  uint8_t asksin_on = 0;
  
 -const uint8_t PROGMEM ASKSIN_CFG[50] = {
+-     0x00, 0x07,
 +const uint8_t PROGMEM ASKSIN_CFG[] = {
-      0x00, 0x07,
++     0x00, 0x01,
       0x02, 0x2e,
       0x03, 0x0d,
-@@ -26,16 +26,17 @@
+      0x04, 0xE9,
+      0x05, 0xCA,
+-     0x07, 0x0C,
++     0x07, 0x04,
+      0x0B, 0x06,
+      0x0D, 0x21,
+      0x0E, 0x65,
+@@ -26,18 +26,21 @@
       0x11, 0x93,
       0x12, 0x03,
       0x15, 0x34,
@@ -31,8 +39,12 @@ Index: clib/rf_asksin.c
 +     0x3e, 0xc3
  };
  
++static inline uint8_t read_cc1100_rxbytes();
++
  void
-@@ -56,18 +57,16 @@
+ rf_asksin_init(void)
+ {
+@@ -56,20 +59,30 @@
    my_delay_us(100);
  
    // load configuration
@@ -54,8 +66,22 @@ Index: clib/rf_asksin.c
 +  ccRX();
  }
  
++// Workaround for CC1101 Errata 3
++static inline uint8_t read_cc1100_rxbytes()
++{
++  uint8_t rxbytes, rxbytes2;
++  
++  rxbytes = cc1100_readReg(CC1100_RXBYTES);
++  while((rxbytes2 = cc1100_readReg(CC1100_RXBYTES)) != rxbytes)
++    rxbytes = rxbytes2;
++
++  return rxbytes;
++}
++
  void
-@@ -77,80 +76,74 @@
+ rf_asksin_task(void)
+ {
+@@ -77,15 +90,27 @@
    uint8_t dec[MAX_ASKSIN_MSG];
    uint8_t rssi;
    uint8_t l;
@@ -64,101 +90,69 @@ Index: clib/rf_asksin.c
    if(!asksin_on)
      return;
  
-   // see if a CRC OK pkt has been arrived
-   if (bit_is_set( CC1100_IN_PORT, CC1100_IN_PIN )) {
-+    while((rxfifo_cnt = cc1100_readReg(CC1100_RXBYTES)) != 0x00) {
-+      if (rxfifo_cnt & 0x80) // Overflow
-+        break;
+-  // see if a CRC OK pkt has been arrived
+-  if (bit_is_set( CC1100_IN_PORT, CC1100_IN_PIN )) {
++  // see if there is data to be read
++  while (bit_is_set( CC1100_IN_PORT, CC1100_IN_PIN )) {
++    rxfifo_cnt = read_cc1100_rxbytes();
  
--    enc[0] = cc1100_readReg( CC1100_RXFIFO ) & 0x7f; // read len
-+      enc[0] = cc1100_readReg( CC1100_RXFIFO ) & 0x7f; // read len
++    if (rxfifo_cnt & 0x80) // Overflow
++      break;
++
++    rxfifo_cnt &= 0x7f;
++
+     enc[0] = cc1100_readReg( CC1100_RXFIFO ) & 0x7f; // read len
  
--    if (enc[0]>=MAX_ASKSIN_MSG)
--         enc[0] = MAX_ASKSIN_MSG-1;
--    
--    CC1100_ASSERT;
--    cc1100_sendbyte( CC1100_READ_BURST | CC1100_RXFIFO );
--    
--    for (uint8_t i=0; i<enc[0]; i++) {
--         enc[i+1] = cc1100_sendbyte( 0 );
--    }
--    
--    rssi = cc1100_sendbyte( 0 );
++    while ((enc[0] + 2) < (rxfifo_cnt - 1)) { // Wait for more data
++      my_delay_ms(1);
++      rxfifo_cnt = (read_cc1100_rxbytes() & 0x7f) + 1;
++    }
++
+     if (enc[0]>=MAX_ASKSIN_MSG)
+          enc[0] = MAX_ASKSIN_MSG-1;
+     
+@@ -97,13 +122,12 @@
+     }
+     
+     rssi = cc1100_sendbyte( 0 );
 -    
--    CC1100_DEASSERT;
-+      if (enc[0]>=MAX_ASKSIN_MSG)
-+           enc[0] = MAX_ASKSIN_MSG-1;
-+      
-+      CC1100_ASSERT;
-+      cc1100_sendbyte( CC1100_READ_BURST | CC1100_RXFIFO );
-+      
-+      for (uint8_t i=0; i<enc[0]; i++) {
-+           enc[i+1] = cc1100_sendbyte( 0 );
-+      }
-+      
-+      rssi = cc1100_sendbyte( 0 );
-+      /* LQI = */ cc1100_sendbyte( 0 );
++    l = cc1100_sendbyte( 0 );
++
+     CC1100_DEASSERT;
  
 -    ccStrobe( CC1100_SFRX  );
 -    ccStrobe( CC1100_SIDLE );
 -    ccStrobe( CC1100_SNOP  );
 -    ccStrobe( CC1100_SRX   );
-+      CC1100_DEASSERT;
- 
--    dec[0] = enc[0];
--    dec[1] = (~enc[1]) ^ 0x89;
--    
--    for (l = 2; l < dec[0]; l++)
--         dec[l] = (enc[l-1] + 0xdc) ^ enc[l];
--    
--    dec[l] = enc[l] ^ dec[2];
++    if (!(l & 0x80)) // CRC not ok
++      continue;
+ 
+     dec[0] = enc[0];
+     dec[1] = (~enc[1]) ^ 0x89;
+@@ -113,7 +137,6 @@
+     
+     dec[l] = enc[l] ^ dec[2];
+     
 -    
--    
--    if (tx_report & REP_BINTIME) {
-+      while(cc1100_readReg(CC1100_RXBYTES) & 0x7f)
-+              cc1100_readReg( CC1100_RXFIFO );
-+ 
-+      dec[0] = enc[0];
-+      dec[1] = (~enc[1]) ^ 0x89;
-       
--      DC('a');
--      for (uint8_t i=0; i<=dec[0]; i++)
--      DC( dec[i] );
--         
--    } else {
--      DC('A');
-+      for (l = 2; l < dec[0]; l++)
-+           dec[l] = (enc[l-1] + 0xdc) ^ enc[l];
+     if (tx_report & REP_BINTIME) {
        
--      for (uint8_t i=0; i<=dec[0]; i++)
--        DH2( dec[i] );
-+      dec[l] = enc[l] ^ dec[2];
+       DC('a');
+@@ -131,26 +154,17 @@
        
--      if (tx_report & REP_RSSI)
--        DH2(rssi);
--      
--      DNL();
-+      if (tx_report & REP_BINTIME) {
-+        
-+        DC('a');
-+        for (uint8_t i=0; i<=dec[0]; i++)
-+        DC( dec[i] );
-+           
-+      } else {
-+        DC('A');
-+        
-+        for (uint8_t i=0; i<=dec[0]; i++)
-+          DH2( dec[i] );
-+        
-+        if (tx_report & REP_RSSI)
-+          DH2(rssi);
-+        
-+        DNL();
-+      }
+       DNL();
      }
--
++  }
+ 
 -    return;
 -       
++  switch(cc1100_readReg( CC1100_MARCSTATE )) {
++    case MARCSTATE_RXFIFO_OVERFLOW:
++      ccStrobe( CC1100_SFRX  );
++    case MARCSTATE_IDLE:
++      ccStrobe( CC1100_SIDLE );
++      ccStrobe( CC1100_SNOP  );
++      ccStrobe( CC1100_SRX   );
++      break;
    }
 -       
 -       
@@ -175,20 +169,11 @@ Index: clib/rf_asksin.c
 -    break;
 -       
 -  }
- 
-+  switch(cc1100_readReg( CC1100_MARCSTATE )) {
-+    case MARCSTATE_RXFIFO_OVERFLOW:
-+      ccStrobe( CC1100_SFRX  );
-+    case MARCSTATE_IDLE:
-+      ccStrobe( CC1100_SIDLE );
-+      ccStrobe( CC1100_SNOP  );
-+      ccStrobe( CC1100_SRX   );
-+      break;
-+  }
+-
  }
  
  void
-@@ -173,20 +166,7 @@
+@@ -173,20 +187,7 @@
      my_delay_ms(3);             // 3ms: Found by trial and error
    }
  
@@ -209,7 +194,7 @@ Index: clib/rf_asksin.c
    enc[0] = dec[0];
    enc[1] = (~dec[1]) ^ 0x89;
  
-@@ -195,6 +175,15 @@
+@@ -195,6 +196,15 @@
    
    enc[l] = dec[l] ^ dec[2];
  
@@ -225,7 +210,7 @@ Index: clib/rf_asksin.c
    // send
    CC1100_ASSERT;
    cc1100_sendbyte(CC1100_WRITE_BURST | CC1100_TXFIFO);
-@@ -205,12 +194,17 @@
+@@ -205,12 +215,17 @@
  
    CC1100_DEASSERT;