From 4a9033fea31a7273bc23ef35b52b673155a7a7fc Mon Sep 17 00:00:00 2001
From: Travis Goodspeed <travis@radiantmachines.com>
Date: Sat, 20 Apr 2019 13:05:31 -0400
Subject: [PATCH] Cleanup of POCSAG test.

---
 bin/goodwatch.py | 36 +++++++++++++++++++++++++-----------
 1 file changed, 25 insertions(+), 11 deletions(-)

diff --git a/bin/goodwatch.py b/bin/goodwatch.py
index e26969a..8cd17c5 100755
--- a/bin/goodwatch.py
+++ b/bin/goodwatch.py
@@ -1,7 +1,9 @@
 #!/usr/bin/python2
 
 ## This is a quick and dirty python client for communicating with a
-## GoodWatch over its UART.
+## GoodWatch over its UART.  I mostly use it to quickly prototype
+## radio features that I'll later rewrite in clean C, so this is often
+## the ugliest code of the project.
 
 import serial, time, sys, argparse, progressbar;
 
@@ -18,7 +20,7 @@ def chr16(word):
 # Radio Core Registers
 IOCFG2              =0x00    #IOCFG2   - GDO2 output pin configuration 
 IOCFG1              =0x01    #IOCFG1   - GDO1 output pin configuration 
-IOCFG0              =0x02    #IOCFG1   - GDO0 output pin configuration 
+IOCFG0              =0x02    #IOCFG0   - GDO0 output pin configuration 
 FIFOTHR             =0x03    #FIFOTHR  - RX FIFO and TX FIFO thresholds
 SYNC1               =0x04    #SYNC1    - Sync word, high byte
 SYNC0               =0x05    #SYNC0    - Sync word, low byte
@@ -147,6 +149,7 @@ ookconfig=[
     FSCAL2 , 0x2A,      #  Frequency Synthesizer Calibration
     FSCAL1 , 0x00,      #  Frequency Synthesizer Calibration
     FSCAL0 , 0x1F,      #  Frequency Synthesizer Calibration
+    PKTCTRL1, 0x00,     #Packet automation control, fixed length without CRC.
     PKTCTRL0, 0x00,     #Packet automation control, fixed length without CRC.
     PKTLEN,  32,   # PKTLEN    Packet length.
     0, 0 
@@ -164,8 +167,6 @@ pocsagconfig=[
     MDMCFG4, 0xF5,      #  Modem Configuration, wide BW
     #MDMCFG4, 0xC5,      #  Modem Configuration, narrow BW
     MDMCFG3, 0x83,      #  Modem Configuration
-    # #MDMCFG2, 0x30,      #  Modem Configuration, no sync
-    #MDMCFG2, 0x33,      #  Modem Configuration, 30/32 sync
     MDMCFG2, 0x82,      #  2-FSK, current optimized, 16/16 sync
     MDMCFG1, 0x72,      #  Long preamble.
     # FREND0 , 0x11,      #  Front End TX Configuration
@@ -179,12 +180,24 @@ pocsagconfig=[
     FSCAL0 , 0x1F,      #  Frequency Synthesizer Calibration
     
     PKTCTRL0, 0x00,     #  Packet automation control, fixed length without CRC.
-    # PKTLEN,  64,        #  PKTLEN    Packet length.
+    PKTLEN,  60,        #  PKTLEN    Packet length.
 
-    SYNC1, 0x83,
-    SYNC0, 0x2d,
+    SYNC1,   0x83,  # 832d first
+    SYNC0,   0x2d,
+    ADDR,    0xea,  # ea27 next, but we can only match one piece of it.
 
-    TEST0, 0x09, #Who knows?
+    TEST2,   0x81, #Who knows?
+    TEST1,   0x35,
+    TEST0,   0x09,
+
+    MCSM1,   0x30,   # MCSM1, return to IDLE after packet.  Or with 2 for TX carrier tes.
+    MCSM0,   0x10,   # MCSM0     Main Radio Control State Machine configuration.
+    IOCFG2,  0x29,   # IOCFG2    GDO2 output pin configuration.
+    IOCFG0,  0x06,   # IOCFG0    GDO0 output pin configuration.
+    
+    FIFOTHR,  0x47,  # RX FIFO and TX FIFO Thresholds
+    #PKTCTRL1, 0x00,  # No address check, no status.
+    PKTCTRL1, 0x01,  # Exact address check, no status.
     
     0, 0 
 ];
@@ -347,6 +360,7 @@ class GoodWatch:
         freq2=(num>>16) & 0xFF;
         freq1=(num>> 8) & 0xFF;
         freq0= num      & 0xFF
+        #print "FREQ set to %02x %02x %02x" % (freq2, freq1, freq)
         self.radioconfig([
             FREQ2, freq2,
             FREQ1, freq1,
@@ -470,15 +484,15 @@ if __name__=='__main__':
         time.sleep(1);
         goodwatch.radioonoff(1);
         print "Configuring radio.";
-        goodwatch.radioconfig(beaconconfig);
+        #goodwatch.radioconfig(beaconconfig);
         goodwatch.radioconfig(pocsagconfig);
         #Standard DAPNET frequency.
         goodwatch.radiofreq(439.988);
         while 1:
             pkt=goodwatch.radiorx();
-            if len(pkt)>1:
+            if len(pkt)>1: # and pkt[0]=='\xea' and pkt[1]=='\x27':
                 print pkt.encode('hex');
-            time.sleep(1);
+            time.sleep(0.1);
     
     if args.beaconsniff!=None:
         print "Turning radio on.";