Merge pull request #6 from drowe67/dr-ota

Milestone 9 - Over the Air Tests

README.md

@@ -69,7 +69,7 @@ Service scripts have been written to wrap up the complex command lines.
 
 ## Service command lines
 
-1. Loopback test is a good start, this checks each terminal is working stand alone.  These tests send a burst from the Termnals Tx to it's Rx:
+1. Loopback test is a good start, this checks each terminal is working stand alone.  These tests send a burst from the Terminals Tx to it's Rx:
    ```
    laptop$ sudo ./ping start_loopback
    ```
@@ -84,9 +84,9 @@ Service scripts have been written to wrap up the complex command lines.
    ```
    Then start the Terminal 1 `ping` service:
    ```
-   laptop$ sudo ./ping start_loopback 6
+   laptop$ sudo ./ping start 6
    ```
-   ... will send 6 packets, 10 seconds apart (a 1 minute total run time).  Look at /var/log/ping for results.
+   ... will send 6 packets, 10 seconds apart (a 1 minute total run time).  Look at `/var/log/ping` for results.
 
 # Useful Command Lines
 

script/frame_repeater

@@ -1,14 +1,8 @@
 #!/bin/bash
-# frame repeater service
+# Frame repeater service, runs on the Pi
-
-# TODO
-#   [X] way to send stderr to log file
-#   [ ] way to set freq at start up
-#   [ ] way to set Rs and M at start up
-#   [ ] way to start as frame repeater or beacon
 
 TERM_ADDR=0x2
-RS=10000
+RS=1000
 DATA_BITS_PER_FRAME=256
 CODE=H_${DATA_BITS_PER_FRAME}_512_4
 TR_SWITCH_GPIO=21
@@ -17,7 +11,7 @@ NAME=frame_repeater
 PIDFILE=/var/run/${NAME}.pid
 LOGFILE=/var/log/${NAME}.log
 PATH=${PIRIP_PATH}/tx:${PIRIP_PATH}/librtlsdr/build_rtlsdr/src:${PATH}
-GAIN="${GAIN:-49}"
+GAIN="${GAIN:-40}"
 
 function tx_burst_rpitx {
     num_bursts=$1
@@ -26,7 +20,7 @@ function tx_burst_rpitx {
 }
 
 function start_rx {
-    rtl_fsk -g ${GAIN} -f 144490000 - -a 200000 -r ${RS} --code  H_256_512_4 --mask ${RS} -L $1 > /dev/null &
+    rtl_fsk -g ${GAIN} -f 144490000 - -a 40000 -r ${RS} --code  H_256_512_4  -L $1 > /dev/null &
     echo $!>${PIDFILE}
 }
 
@@ -39,14 +33,14 @@ function stop_service {
 
 case "$1" in 
     start)
-        ( rtl_fsk -g 49 -f 144490000 - -a 200000 -r ${RS} --code ${CODE} --mask ${RS} --filter ${TERM_ADDR} -q -b | \
+        ( rtl_fsk -g ${GAIN} -f 144490000 - -a 40000 -r ${RS} --code ${CODE} --filter ${TERM_ADDR} -q -b | \
           frame_repeater ${DATA_BITS_PER_FRAME} ${TERM_ADDR} | \
           rpitx_fsk - --code ${CODE} -r ${RS} -s ${RS} -g ${TR_SWITCH_GPIO} --packed -- ) >>${LOGFILE} 2>&1 &
         echo $!>${PIDFILE}
         ;;
     start_verbose)
         # run in the foreground and log to stderr instead of a logfile
-        rtl_fsk -g 49 -f 144490000 - -a 200000 -r ${RS} --code ${CODE} --mask ${RS} --filter ${TERM_ADDR} -q -b -v | \
+        rtl_fsk -g ${GAIN} -f 144490000 - -a 40000 -r ${RS} --code ${CODE} --filter ${TERM_ADDR} -q -b -v | \
         frame_repeater ${DATA_BITS_PER_FRAME} ${TERM_ADDR} | \
         rpitx_fsk - --code ${CODE} -r ${RS} -s ${RS} -g ${TR_SWITCH_GPIO} --packed --
         ;;
@@ -60,8 +54,12 @@ case "$1" in
             echo "rtl_fsk failed to start!"
             rm ${PIDFILE}
             exit 1
-        fi   
+        fi
-        tx_burst_rpitx $2
+        num_bursts=1
+        if [ "$#" -eq 2 ]; then
+            num_bursts=$2
+        fi
+        tx_burst_rpitx $num_bursts
         stop_service
         ;;
     stop)

script/ping

@@ -1,12 +1,6 @@
 #!/bin/bash
 # ping service script - sends bursts to the frame repeater and logs reply
-
+# Runs on a Host laptop with HackRF Tx and RTLSDR Rx
-# TODO
-# [X] receive it's own packets
-# [X] log one one logfile
-# [X] clean start up and shut down
-# [X] send a sequence of packets
-# [X] test with Pi running frame_repeater OTC
 
 TERM_ADDR=0x1
 RS=10000

tx/frame_repeater.c

@@ -88,6 +88,7 @@ int main(int argc, char *argv[]) {
             if (!(rx_status & FREEDV_RX_SYNC)) {
                 /* We've lost RX_SYNC so receive burst finished.  So now we can Tx the frames we have buffered */
                 fprintf(stderr, "frame_repeater: Sending received %d frame burst of %d bytes\n", nframes, bytes_in);
+                sleep(1);
                 bytes_out = 0; burst_control = 1;
                 while(bytes_out != bytes_in) {
                     fwrite(&burst_control, sizeof(uint8_t), 1, stdout);

tx/rpitx_fsk.cpp

@@ -510,28 +510,18 @@ int main(int argc, char **argv)
     }
 
     if (carrier_test) {
-        fprintf(stderr, "Carrier test mode 1 sec on/off , Ctrl-C to exit\n");
+        fprintf(stderr, "Carrier test mode, Ctrl-C to exit\n");
-        int count = 0;
-        int cycles = 0;
         float VCOfreqHz = 0;
+        if (*ant_switch_gpio_path) sys_gpio(ant_switch_gpio_path, "1");
         fmmod->clkgpio::enableclk(4);
-        while(running) {
+        while(running) usleep(1000);
-            //fmmod->SetFrequencySamples(&VCOfreqHz,1);
+        if (*ant_switch_gpio_path) sys_gpio(ant_switch_gpio_path, "0");       
-            while (SetFrequencySampleNonBlocking(fmmod, VCOfreqHz)) usleep(100);
-            count++;
-            if (count == SymbolRate)
-                fmmod->clkgpio::disableclk(4);
-            if (count == 2*SymbolRate) {
-                fmmod->clkgpio::enableclk(4);
-                count = 0;
-                fprintf(stderr,"\rcycles: %d", ++cycles);
-            }
-        }
     }
 
     if (one_zero_test) {
         fprintf(stderr, "...010101... test mode, Ctrl-C to exit\n");
         float VCOfreqHz = 0;
+        if (*ant_switch_gpio_path) sys_gpio(ant_switch_gpio_path, "1");
         fmmod->clkgpio::enableclk(4);
         while(running) {
             if (VCOfreqHz == shiftHz)
@@ -540,6 +530,7 @@ int main(int argc, char **argv)
                 VCOfreqHz = shiftHz;
             while (SetFrequencySampleNonBlocking(fmmod, VCOfreqHz)) usleep(100);
         }
+        if (*ant_switch_gpio_path) sys_gpio(ant_switch_gpio_path, "0");       
     }
 
     finished: