Removed 300 references. Add clear_swd function

recipes-extended/openocd/files/bmd300_program.sh

@@ -85,7 +85,7 @@ convert_bin_to_hex_files ()
 
 #Check to see if nrf52 is protected
 test_nrf52_protected() {
-    echo "Checking BMD300 lock status"
+    echo "Checking BMD lock status"
     openocd -f interface/imx-native.cfg -c \
     "transport select swd; source [find target/nrf52.cfg]" -c init \
     -c "dap apreg 1 0x0c" -c exit 2> junk
@@ -93,10 +93,10 @@ test_nrf52_protected() {
     rm junk
     if [ $APPROTECTSTATUS = "0x00000001" ] 
     then
-        echo "BMD300 NOT PROTECTED"
+        echo "BMD NOT PROTECTED"
         return 1
     else
-        echo "BMD 300 PROTECTED"
+        echo "BMD PROTECTED"
         return 0
     fi
 }
@@ -109,7 +109,7 @@ test_nrf52_for_protection ()
         -c "transport select swd; source [find target/nrf52.cfg]" \
         -c init \
         -c "dap apreg 1 0x04 0x01; \
-        echo Unlocking\ BMD-300...; \
+        echo Unlocking\ BMD...; \
         sleep 30000; \
         dap apreg 1 0x08; \
         dap apreg 1 0x00 0x01; \
@@ -127,6 +127,23 @@ test_nrf52_for_protection ()
     fi
 }
 
+# blow out swd lines to ensure SWD is in a good state
+clear_swd ()
+{
+    echo 78 > /sys/class/gpio/export
+    echo out > /sys/class/gpio/gpio78/direction
+
+    for i in `seq 1 9`;
+    do
+        echo 1 > /sys/class/gpio/gpio78/value
+        usleep 100000
+        echo 0 > /sys/class/gpio/gpio78/value
+        usleep 100000
+    done
+
+    echo 78 > /sys/class/gpio/unexport
+}
+
 # Check for at least one option
 if [ $# -eq 0 ]; then 
     print_usage
@@ -173,8 +190,9 @@ if [ "${cmds}" == "" ]; then
 fi
 
 test_nrf52_for_protection
+clear_swd
 
-echo "writing files ${HEX_FILES[@]} to BMD 300 . . . ."
+echo "writing files ${HEX_FILES[@]} to BMD . . . ."
 
 #execute openocd command
 eval openocd -f interface/imx-native.cfg  \