diff --git a/tests/unittests/Makefile.ci b/tests/unittests/Makefile.ci
index d1bcfc3b7b..72e4481ef3 100644
--- a/tests/unittests/Makefile.ci
+++ b/tests/unittests/Makefile.ci
@@ -18,6 +18,9 @@ BOARD_INSUFFICIENT_MEMORY := \
     bluepill \
     bluepill-128kib \
     calliope-mini \
+    cc1312-launchpad \
+    cc1352-launchpad \
+    cc1352p-launchpad \
     cc2650-launchpad \
     cc2650stk \
     derfmega128 \
diff --git a/tests/unittests/tests-atomic_utils/Makefile b/tests/unittests/tests-atomic_utils/Makefile
new file mode 100644
index 0000000000..48422e909a
--- /dev/null
+++ b/tests/unittests/tests-atomic_utils/Makefile
@@ -0,0 +1 @@
+include $(RIOTBASE)/Makefile.base
diff --git a/tests/unittests/tests-atomic_utils/Makefile.include b/tests/unittests/tests-atomic_utils/Makefile.include
new file mode 100644
index 0000000000..527faa4e06
--- /dev/null
+++ b/tests/unittests/tests-atomic_utils/Makefile.include
@@ -0,0 +1,2 @@
+USEMODULE += atomic_utils
+USEMODULE += random # <-- used for input data to operate on
diff --git a/tests/unittests/tests-atomic_utils/tests-atomic_utils.c b/tests/unittests/tests-atomic_utils/tests-atomic_utils.c
new file mode 100644
index 0000000000..ab1a6cb559
--- /dev/null
+++ b/tests/unittests/tests-atomic_utils/tests-atomic_utils.c
@@ -0,0 +1,286 @@
+/*
+ * Copyright (C) 2020 Otto-von-Guericke-Universität Magdeburg
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @{
+ *
+ * @file
+ * @brief       Unittests for the atomic utils module
+ *
+ * @author      Marian Buschsieweke <marian.buschsieweke@ovgu.de>
+ *
+ * @}
+ */
+
+#include <string.h>
+
+#include "embUnit.h"
+#include "tests-atomic_utils.h"
+
+#include "atomic_utils.h"
+#include "random.h"
+
+#define ENABLE_DEBUG 0
+#include "debug.h"
+
+typedef void (*fetch_op_u8_t)(uint8_t *dest, uint8_t val);
+typedef void (*fetch_op_u16_t)(uint16_t *dest, uint16_t val);
+typedef void (*fetch_op_u32_t)(uint32_t *dest, uint32_t val);
+typedef void (*fetch_op_u64_t)(uint64_t *dest, uint64_t val);
+
+static void fetch_add_u8(uint8_t *dest, uint8_t val){ *dest += val; }
+static void fetch_add_u16(uint16_t *dest, uint16_t val){ *dest += val; }
+static void fetch_add_u32(uint32_t *dest, uint32_t val){ *dest += val; }
+static void fetch_add_u64(uint64_t *dest, uint64_t val){ *dest += val; }
+
+static void fetch_sub_u8(uint8_t *dest, uint8_t val){ *dest -= val; }
+static void fetch_sub_u16(uint16_t *dest, uint16_t val){ *dest -= val; }
+static void fetch_sub_u32(uint32_t *dest, uint32_t val){ *dest -= val; }
+static void fetch_sub_u64(uint64_t *dest, uint64_t val){ *dest -= val; }
+
+static void fetch_or_u8(uint8_t *dest, uint8_t val){ *dest |= val; }
+static void fetch_or_u16(uint16_t *dest, uint16_t val){ *dest |= val; }
+static void fetch_or_u32(uint32_t *dest, uint32_t val){ *dest |= val; }
+static void fetch_or_u64(uint64_t *dest, uint64_t val){ *dest |= val; }
+
+static void fetch_xor_u8(uint8_t *dest, uint8_t val){ *dest ^= val; }
+static void fetch_xor_u16(uint16_t *dest, uint16_t val){ *dest ^= val; }
+static void fetch_xor_u32(uint32_t *dest, uint32_t val){ *dest ^= val; }
+static void fetch_xor_u64(uint64_t *dest, uint64_t val){ *dest ^= val; }
+
+static void fetch_and_u8(uint8_t *dest, uint8_t val){ *dest &= val; }
+static void fetch_and_u16(uint16_t *dest, uint16_t val){ *dest &= val; }
+static void fetch_and_u32(uint32_t *dest, uint32_t val){ *dest &= val; }
+static void fetch_and_u64(uint64_t *dest, uint64_t val){ *dest &= val; }
+
+static void test_load_store(void)
+{
+    uint8_t u8 = 42;
+    atomic_store_u8(&u8, 13);
+    TEST_ASSERT_EQUAL_INT(atomic_load_u8(&u8), 13);
+
+    uint16_t u16 = 42;
+    atomic_store_u16(&u16, 1337);
+    TEST_ASSERT_EQUAL_INT(atomic_load_u16(&u16), 1337);
+
+    uint32_t u32 = 42;
+    atomic_store_u32(&u32, 0x13371337);
+    TEST_ASSERT_EQUAL_INT(atomic_load_u32(&u32), 0x13371337);
+
+    uint64_t u64 = 42;
+    atomic_store_u64(&u64, 0x1337133713371337);
+    TEST_ASSERT_EQUAL_INT(atomic_load_u64(&u64), 0x1337133713371337);
+}
+
+static void test_fetch_op_u8(fetch_op_u8_t atomic_op, fetch_op_u8_t op)
+{
+    uint8_t state1 = 0, state2 = 0;
+    uint8_t i = 0;
+    do {
+        atomic_op(&state1, i);
+        op(&state2, i);
+        TEST_ASSERT_EQUAL_INT(state1, state2);
+        i++;
+    } while (i);
+}
+
+static void test_fetch_ops_u8(void)
+{
+    test_fetch_op_u8(atomic_fetch_add_u8, fetch_add_u8);
+    test_fetch_op_u8(atomic_fetch_sub_u8, fetch_sub_u8);
+    test_fetch_op_u8(atomic_fetch_or_u8, fetch_or_u8);
+    test_fetch_op_u8(atomic_fetch_xor_u8, fetch_xor_u8);
+    test_fetch_op_u8(atomic_fetch_and_u8, fetch_and_u8);
+    test_fetch_op_u8(semi_atomic_fetch_add_u8, fetch_add_u8);
+    test_fetch_op_u8(semi_atomic_fetch_sub_u8, fetch_sub_u8);
+    test_fetch_op_u8(semi_atomic_fetch_or_u8, fetch_or_u8);
+    test_fetch_op_u8(semi_atomic_fetch_xor_u8, fetch_xor_u8);
+    test_fetch_op_u8(semi_atomic_fetch_and_u8, fetch_and_u8);
+}
+
+static void test_fetch_op_u16(fetch_op_u16_t atomic_op, fetch_op_u16_t op)
+{
+    uint16_t state1 = 0, state2 = 0;
+    uint8_t i = 0;
+    do {
+        uint16_t num = random_uint32();
+        atomic_op(&state1, num);
+        op(&state2, num);
+        TEST_ASSERT_EQUAL_INT(state1, state2);
+        i++;
+    } while (i);
+}
+
+static void test_fetch_ops_u16(void)
+{
+    test_fetch_op_u16(atomic_fetch_add_u16, fetch_add_u16);
+    test_fetch_op_u16(atomic_fetch_sub_u16, fetch_sub_u16);
+    test_fetch_op_u16(atomic_fetch_or_u16, fetch_or_u16);
+    test_fetch_op_u16(atomic_fetch_xor_u16, fetch_xor_u16);
+    test_fetch_op_u16(atomic_fetch_and_u16, fetch_and_u16);
+    test_fetch_op_u16(semi_atomic_fetch_add_u16, fetch_add_u16);
+    test_fetch_op_u16(semi_atomic_fetch_sub_u16, fetch_sub_u16);
+    test_fetch_op_u16(semi_atomic_fetch_or_u16, fetch_or_u16);
+    test_fetch_op_u16(semi_atomic_fetch_xor_u16, fetch_xor_u16);
+    test_fetch_op_u16(semi_atomic_fetch_and_u16, fetch_and_u16);
+}
+
+static void test_fetch_op_u32(fetch_op_u32_t atomic_op, fetch_op_u32_t op)
+{
+    uint32_t state1 = 0, state2 = 0;
+    uint8_t i = 0;
+    do {
+        uint32_t num = random_uint32();
+        atomic_op(&state1, num);
+        op(&state2, num);
+        TEST_ASSERT_EQUAL_INT(state1, state2);
+        i++;
+    } while (i);
+}
+
+static void test_fetch_ops_u32(void)
+{
+    test_fetch_op_u32(atomic_fetch_add_u32, fetch_add_u32);
+    test_fetch_op_u32(atomic_fetch_sub_u32, fetch_sub_u32);
+    test_fetch_op_u32(atomic_fetch_or_u32, fetch_or_u32);
+    test_fetch_op_u32(atomic_fetch_xor_u32, fetch_xor_u32);
+    test_fetch_op_u32(atomic_fetch_and_u32, fetch_and_u32);
+    test_fetch_op_u32(semi_atomic_fetch_add_u32, fetch_add_u32);
+    test_fetch_op_u32(semi_atomic_fetch_sub_u32, fetch_sub_u32);
+    test_fetch_op_u32(semi_atomic_fetch_or_u32, fetch_or_u32);
+    test_fetch_op_u32(semi_atomic_fetch_xor_u32, fetch_xor_u32);
+    test_fetch_op_u32(semi_atomic_fetch_and_u32, fetch_and_u32);
+}
+
+static void test_fetch_op_u64(fetch_op_u64_t atomic_op, fetch_op_u64_t op)
+{
+    uint64_t state1 = 0, state2 = 0;
+    uint8_t i = 0;
+    do {
+        uint64_t num;
+        random_bytes((void *)&num, sizeof(num));
+        atomic_op(&state1, num);
+        op(&state2, num);
+        TEST_ASSERT_EQUAL_INT(state1, state2);
+        i++;
+    } while (i);
+}
+
+static void test_fetch_ops_u64(void)
+{
+    test_fetch_op_u64(atomic_fetch_add_u64, fetch_add_u64);
+    test_fetch_op_u64(atomic_fetch_sub_u64, fetch_sub_u64);
+    test_fetch_op_u64(atomic_fetch_or_u64, fetch_or_u64);
+    test_fetch_op_u64(atomic_fetch_xor_u64, fetch_xor_u64);
+    test_fetch_op_u64(atomic_fetch_and_u64, fetch_and_u64);
+    test_fetch_op_u64(semi_atomic_fetch_add_u64, fetch_add_u64);
+    test_fetch_op_u64(semi_atomic_fetch_sub_u64, fetch_sub_u64);
+    test_fetch_op_u64(semi_atomic_fetch_or_u64, fetch_or_u64);
+    test_fetch_op_u64(semi_atomic_fetch_xor_u64, fetch_xor_u64);
+    test_fetch_op_u64(semi_atomic_fetch_and_u64, fetch_and_u64);
+}
+
+static void test_atomic_set_bit(void)
+{
+    {
+        uint8_t val1 = 0, val2 = 0;
+        for (uint8_t i = 0; i < 8; i++) {
+            atomic_set_bit_u8(atomic_bit_u8(&val1, i));
+            val2 |= 1ULL << i;
+            TEST_ASSERT_EQUAL_INT(val2, val1);
+        }
+    }
+
+    {
+        uint16_t val1 = 0, val2 = 0;
+        for (uint8_t i = 0; i < 16; i++) {
+            atomic_set_bit_u16(atomic_bit_u16(&val1, i));
+            val2 |= 1ULL << i;
+            TEST_ASSERT_EQUAL_INT(val2, val1);
+        }
+    }
+
+    {
+        uint32_t val1 = 0, val2 = 0;
+        for (uint8_t i = 0; i < 32; i++) {
+            atomic_set_bit_u32(atomic_bit_u32(&val1, i));
+            val2 |= 1ULL << i;
+            TEST_ASSERT_EQUAL_INT(val2, val1);
+        }
+    }
+
+    {
+        uint64_t val1 = 0, val2 = 0;
+        for (uint8_t i = 0; i < 32; i++) {
+            atomic_set_bit_u64(atomic_bit_u64(&val1, i));
+            val2 |= 1ULL << i;
+            TEST_ASSERT(val2 == val1);
+        }
+    }
+}
+
+static void test_atomic_clear_bit(void)
+{
+    {
+        uint8_t val1 = 0xff, val2 = 0xff;
+        for (uint8_t i = 0; i < 8; i++) {
+            atomic_clear_bit_u8(atomic_bit_u8(&val1, i));
+            val2 &= ~(1ULL << i);
+            TEST_ASSERT_EQUAL_INT(val2, val1);
+        }
+    }
+
+    {
+        uint16_t val1 = 0xffff, val2 = 0xffff;
+        for (uint8_t i = 0; i < 16; i++) {
+            atomic_clear_bit_u16(atomic_bit_u16(&val1, i));
+            val2 &= ~(1ULL << i);
+            TEST_ASSERT_EQUAL_INT(val2, val1);
+        }
+    }
+
+    {
+        uint32_t val1 = 0xffffffff, val2 = 0xffffffff;
+        for (uint8_t i = 0; i < 32; i++) {
+            atomic_clear_bit_u32(atomic_bit_u32(&val1, i));
+            val2 &= ~(1ULL << i);
+            TEST_ASSERT_EQUAL_INT(val2, val1);
+        }
+    }
+
+    {
+        uint64_t val1 = 0xffffffffffffffff, val2 = 0xffffffffffffffff;
+        for (uint8_t i = 0; i < 32; i++) {
+            atomic_clear_bit_u64(atomic_bit_u64(&val1, i));
+            val2 &= ~(1ULL << i);
+            TEST_ASSERT(val2 == val1);
+        }
+    }
+}
+
+Test *tests_atomic_utils_tests(void)
+{
+    EMB_UNIT_TESTFIXTURES(fixtures) {
+        new_TestFixture(test_load_store),
+        new_TestFixture(test_fetch_ops_u8),
+        new_TestFixture(test_fetch_ops_u16),
+        new_TestFixture(test_fetch_ops_u32),
+        new_TestFixture(test_fetch_ops_u64),
+        new_TestFixture(test_atomic_set_bit),
+        new_TestFixture(test_atomic_clear_bit),
+    };
+
+    EMB_UNIT_TESTCALLER(atomic_utils_tests, NULL, NULL, fixtures);
+
+    return (Test *)&atomic_utils_tests;
+}
+
+void tests_atomic_utils(void)
+{
+    TESTS_RUN(tests_atomic_utils_tests());
+}
diff --git a/tests/unittests/tests-atomic_utils/tests-atomic_utils.h b/tests/unittests/tests-atomic_utils/tests-atomic_utils.h
new file mode 100644
index 0000000000..eaacee1ae3
--- /dev/null
+++ b/tests/unittests/tests-atomic_utils/tests-atomic_utils.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2020 Otto-von-Guericke-Universität Magdeburg
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @addtogroup  unittests
+ * @{
+ *
+ * @file
+ * @brief       Unittests for the atomic util module
+ *
+ * @author      Marian Buschsieweke <marian.buschsieweke@ovgu.de>
+ */
+
+#ifndef TESTS_ATOMIC_UTILS_H
+#define TESTS_ATOMIC_UTILS_H
+
+#include "embUnit.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief   The entry point of this test suite.
+ */
+void tests_atomic_util(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* TESTS_ATOMIC_UTILS_H */
+/** @} */