From 95e654f232bcf526a418c184fdb80bf4d30383ec Mon Sep 17 00:00:00 2001
From: Benjamin Valentin <benjamin.valentin@ml-pa.com>
Date: Fri, 11 Nov 2022 13:54:59 +0100
Subject: [PATCH] sys/fmt: add print_bytes_hex()

---
 sys/fmt/fmt.c     | 9 +++++++++
 sys/include/fmt.h | 8 ++++++++
 2 files changed, 17 insertions(+)

diff --git a/sys/fmt/fmt.c b/sys/fmt/fmt.c
index 2c997c6c29..11eddf3cfa 100644
--- a/sys/fmt/fmt.c
+++ b/sys/fmt/fmt.c
@@ -550,6 +550,15 @@ void print_byte_hex(uint8_t byte)
     print(buf, sizeof(buf));
 }
 
+void print_bytes_hex(const void *bytes, size_t num)
+{
+    const uint8_t *b = bytes;
+
+    while (num--) {
+        print_byte_hex(*b++);
+    }
+}
+
 void print_u32_hex(uint32_t val)
 {
     char buf[8];
diff --git a/sys/include/fmt.h b/sys/include/fmt.h
index c3a7b1cace..45d340fed7 100644
--- a/sys/include/fmt.h
+++ b/sys/include/fmt.h
@@ -450,6 +450,14 @@ void print_s32_dec(int32_t val);
  */
 void print_byte_hex(uint8_t byte);
 
+/**
+ * @brief Print bytes as hex to stdout
+ *
+ * @param[in]  bytes Byte array to print
+ * @param[in]  n     Number of bytes to print
+ */
+void print_bytes_hex(const void *bytes, size_t n);
+
 /**
  * @brief Print uint32 value as hex to stdout
  *