It works again!

[goodfet] / shellcode / chipcon / cc1110 / reflexframe.c

diff --git a/shellcode/chipcon/cc1110/reflexframe.c b/shellcode/chipcon/cc1110/reflexframe.c
index 06c15e3..8273862 100644 (file)
--- a/shellcode/chipcon/cc1110/reflexframe.c
+++ b/shellcode/chipcon/cc1110/reflexframe.c
@@ -27,33 +27,6 @@ void carrier(){
   MDMCFG1   = 0x22;   // Modem configuration.
   MDMCFG0   = 0xF8;   // Modem configuration.
   
-  /*
-  CHANNR    = 0x00;   // Channel number.
-  DEVIATN   = 0x00;   // Modem deviation setting (when FSK modulation is enabled).
-  FREND1    = 0x56;   // Front end RX configuration.
-  FREND0    = 0x10;   // Front end RX configuration.
-  MCSM0     = 0x14;   // Main Radio Control State Machine configuration.
-  FOCCFG    = 0x16;   // Frequency Offset Compensation Configuration.
-  BSCFG     = 0x6C;   // Bit synchronization Configuration.
-  AGCCTRL2  = 0x03;   // AGC control.
-  AGCCTRL1  = 0x40;   // AGC control.
-  AGCCTRL0  = 0x91;   // AGC control.
-  FSCAL3    = 0xE9;   // Frequency synthesizer calibration.
-  FSCAL2    = 0x2a;   // Frequency synthesizer calibration.
-  FSCAL1    = 0x00;   // Frequency synthesizer calibration.
-  FSCAL0    = 0x1f;   // Frequency synthesizer calibration
-  
-  TEST2     = 0x88;   // Various test settings.
-  TEST1     = 0x31;   // Various test settings.
-  TEST0     = 0x09;   // Various test settings.
-  
-  //FE is too high
-  PA_TABLE0 = 0xFF;   // PA output power setting.
-  PKTCTRL1  = 0x04;   // Packet automation control.
-  PKTCTRL0  = 0x22;   // Packet automation control.
-  ADDR      = 0x00;   // Device address.
-  PKTLEN    = 0xFF;   // Packet length.
-  */
   /* Settings not from SmartRF® Studio. Setting both sync word registers to
    * 0xAA = 0b10101010, i.e., the same as the preamble pattern. Not necessary,
    * but gives control of what the radio attempts to transmit.
@@ -62,12 +35,6 @@ void carrier(){
   //These sync values are better for jamming, but they break reception.
   //SYNC1     = 0xAA;
   //SYNC0     = 0xAA;
-
-  /* Put radio in TX. 
-  RFST      = RFST_STX;
-  while ((MARCSTATE & MARCSTATE_MARC_STATE) != MARC_STATE_TX);
-  */
-
   
 #define RFON RFST = RFST_SIDLE; RFST = RFST_STX; while ((MARCSTATE & MARCSTATE_MARC_STATE) != MARC_STATE_TX);
 #define RFOFF RFST = RFST_SIDLE; //while ((MARCSTATE & MARCSTATE_MARC_STATE) != MARC_STATE_IDLE);
@@ -85,42 +52,6 @@ void sleepMillis(int ms) {
        };
 }
 
-//! Wait for a packet to come, then immediately return.
-void rxwait(){
-  int i=0;
-
-  //Disable interrupts.
-  RFTXRXIE=0;
-  
-  //idle a bit.
-  RFST=RFST_SIDLE;
-  while(MARCSTATE!=MARC_STATE_IDLE);
-  
-  sleepMillis(10);
-  //Begin to receive.
-  RFST=RFST_SRX;
-  while(MARCSTATE!=MARC_STATE_RX);
-    
-  //Incoming!
-  
-  
-  //Fixed length
-  packet[i++]=PKTLEN;
-  while(i<PKTLEN && MARCSTATE==MARC_STATE_RX){
-    
-    while(MARCSTATE==MARC_STATE_RX && !RFTXRXIF); //Wait for byte to be ready.
-    RFTXRXIF=0;      //Clear the flag.
-    
-    HALT;
-    
-    packet[i++]=RFD; //Grab the next byte.
-  }
-  
-  
-  
-  //sleepMillis(10);
-  //RFST = RFST_SIDLE; //End receive.  
-}
 
 //! Reflexively jam on the present channel by responding to a signal with a carrier wave.
 void main(){
@@ -132,16 +63,24 @@ void main(){
   //carrier();
   
   //idle a bit.
-  //RFST=RFST_SIDLE;
-  //while(MARCSTATE!=MARC_STATE_IDLE);
+  RFST=RFST_SIDLE;
+  while(MARCSTATE!=MARC_STATE_IDLE);
 
   while(1){
+    //idle a bit.
+    RFST=RFST_SFSTXON;
+    while(MARCSTATE!=MARC_STATE_FSTXON);
+    
     
+    sleepMillis(5);
     rxwait();
     
-    //idle a bit.
-    //RFST=RFST_SIDLE;
-    //while(MARCSTATE!=MARC_STATE_IDLE);
+    //idle w/ oscillator
+    RFST=RFST_SFSTXON;
+    while(MARCSTATE!=MARC_STATE_FSTXON);
+    
+    //HALT;
+    //sleepMillis(500);
     //HALT;
     
     //RFOFF;
@@ -150,15 +89,60 @@ void main(){
     //SYNC0=0xAA;
     
     //Transmit carrier for 10ms
-    /*
-      RFST=RFST_STX;
-      while(MARCSTATE!=MARC_STATE_TX);
-      sleepMillis(20);
-    */
-    
+    carrier();
     RFON;
     
-    sleepMillis(200);
-    RFOFF;
-  }  
+    sleepMillis(2000);
+    
+    //sleepMillis(500);
+    HALT;
+  }
+}
+
+//! Receives a packet out of the radio from 0xFE00.
+void rxwait(){
+  unsigned char len=16, i=0;
+  
+  do{
+    //1-out the buffer.
+    for(i=0;i<64;i++)
+      packet[i]=0xFF;
+    i=0;
+    
+    //Disable interrupts.
+    RFTXRXIE=0;
+    
+    //idle a bit.
+    RFST=RFST_SIDLE;
+    while(MARCSTATE!=MARC_STATE_IDLE);
+    
+    //Begin to receive.
+    RFST=RFST_SRX;
+    while(MARCSTATE!=MARC_STATE_RX);
+    
+    if(PKTCTRL0&1){
+      //auto length
+      while(i<len+3){ //len+3 if status is appended.
+       while(!RFTXRXIF); //Wait for byte to be ready.
+       RFTXRXIF=0;      //Clear the flag.
+       
+       packet[i++]=RFD; //Grab the next byte.
+       len=packet[0];   //First byte of the packet is the length.
+      }
+    }else{
+      //Fixed length
+      packet[i++]=PKTLEN;
+      while(i<PKTLEN){
+       while(!RFTXRXIF); //Wait for byte to be ready.
+       RFTXRXIF=0;      //Clear the flag.
+       
+       packet[i++]=RFD; //Grab the next byte.
+      }
+    }
+    RFST = RFST_SIDLE; //End receive.
+    
+    //This while loop can be used for filtering.  Unused for now.
+  }while(0); //packet[0]==(char) 0x0f || packet[1]==(char) 0xFF || packet[9]==(char) 0x03);
 }
+
+