tools/edbg: add wrapper bash script

dist/tools/edbg/edbg.sh

@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+
+# Default edbg command
+: "${EDBG:=edbg}"
+# Edbg command base arguments
+: "${EDBG_ARGS:=}"
+
+test_imagefile() {
+    if [ ! -f "${IMAGE_FILE}" ]; then
+        echo "Error: Unable to locate IMAGE_FILE"
+        echo "       (${IMAGE_FILE})"
+        exit 1
+    fi
+}
+
+do_flash() {
+    IMAGE_FILE=$1
+    test_imagefile
+
+    # Configure edbg flash flags
+    local _fflags="${EDBG_ARGS} --verbose --file ${IMAGE_FILE} --verify"
+
+    # flash device
+    sh -c "${EDBG} ${_fflags} || ${EDBG} ${_fflags} --program" && echo 'Done flashing'
+}
+
+do_reset() {
+    sh -c "${EDBG} ${EDBG_ARGS}"
+}
+
+#
+# parameter dispatching
+#
+ACTION="$1"
+shift # pop $1 from $@
+
+case "${ACTION}" in
+  flash)
+    echo "### Flashing Target ###"
+    do_flash "$@"
+    ;;
+  reset)
+    echo "### Resetting Target ###"
+    do_reset
+    ;;
+  *)
+    echo "Usage: $0 {flash|reset}"
+    echo "          flash <flashfile>"
+    exit 2
+    ;;
+esac