1 /**
2 * Copyright (c) 2025 Basalte bv
3 * SPDX-License-Identifier: Apache-2.0
4 */
5
6 #include <zephyr/ztest.h>
7 #include <zephyr/nvmem.h>
8
9 #define consumer0 DT_NODELABEL(test_consumer0)
10 #define nvmem0 DT_ALIAS(nvmem0)
11
12 static const struct nvmem_cell cell0 = NVMEM_CELL_GET_BY_IDX(consumer0, 0);
13 static const struct nvmem_cell cell10 = NVMEM_CELL_GET_BY_NAME(consumer0, cell10);
14
ZTEST(nvmem_api,test_nvmem_api)15 ZTEST(nvmem_api, test_nvmem_api)
16 {
17 uint8_t buf[0x10];
18 int ret;
19
20 zexpect_equal_ptr(cell0.dev, DEVICE_DT_GET(nvmem0));
21 zexpect_equal(cell0.offset, 0);
22 zexpect_equal(cell0.size, 0x10);
23 zexpect_false(cell0.read_only);
24
25 zexpect_equal_ptr(cell10.dev, DEVICE_DT_GET(nvmem0));
26 zexpect_equal(cell10.offset, 0x10);
27 zexpect_equal(cell10.size, 0x10);
28 zexpect_true(cell10.read_only);
29
30 for (size_t i = 0; i < sizeof(buf); ++i) {
31 buf[i] = 2 * i;
32 }
33
34 ret = nvmem_cell_write(&cell0, buf, 0, sizeof(buf));
35 zassert_ok(ret, "Failed to write NVMEM");
36
37 memset(buf, 0, sizeof(buf));
38
39 ret = nvmem_cell_read(&cell0, buf, 0, sizeof(buf));
40 zassert_ok(ret, "Failed to read NVMEM");
41
42 for (size_t i = 0; i < sizeof(buf); ++i) {
43 zexpect_equal(buf[i], 2 * i);
44 }
45
46 ret = nvmem_cell_write(&cell10, buf, 0, sizeof(buf));
47 zassert_equal(ret, -EROFS, "Expected read-only NVMEM");
48 }
49
ZTEST(nvmem_api,test_nvmem_missing)50 ZTEST(nvmem_api, test_nvmem_missing)
51 {
52 const struct nvmem_cell missing_idx = NVMEM_CELL_GET_BY_IDX_OR(consumer0, 10, {});
53 const struct nvmem_cell missing_name = NVMEM_CELL_GET_BY_NAME_OR(consumer0, missing, {});
54
55 zassert_is_null(missing_idx.dev);
56 zassert_is_null(missing_name.dev);
57 }
58
59 ZTEST_SUITE(nvmem_api, NULL, NULL, NULL, NULL, NULL);
60
