binding: nfc: split out common functions

Put common functions that libnfc and neard will use in a common header

Bug-AGL: SPEC-1554
Change-Id: I723cee58a2265bf0574f54cb0b9ff4af5647da73
Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>

1 files changed, 37 insertions, 0 deletions

diff --git a/binding/afm-nfc-common.c b/binding/afm-nfc-common.c
new file mode 100644
index 0000000..6dee428
--- /dev/null
+++ b/binding/afm-nfc-common.c
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2018 Konsulko Group
+ * Author: Matt Ranostay <matt.ranostay@konsulko.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include "afm-nfc-common.h"
+
+char *to_hex_string(unsigned char *data, size_t size)
+{
+	char *buffer = malloc((2 * size) + 1);
+	char *tmp = buffer;
+	int i;
+
+	if (buffer == NULL)
+		return buffer;
+
+	for (i = 0; i < size; i++) {
+		tmp += sprintf(tmp, "%.2x", data[i]);
+	}
+
+	return buffer;
+}