blob: e9ddd3ec76f59a5078c2dbcf5a316e1dc4449c94 [file] [log] [blame]
/*
* Copyright (c) 2019 Vestas Wind Systems A/S
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/device.h>
#include <zephyr/drivers/eeprom.h>
#include <zephyr/ztest.h>
/* There is no obvious way to pass this to tests, so use a global */
ZTEST_BMEM static const struct device *eeprom;
/* Test retrieval of eeprom size */
ZTEST_USER(eeprom, test_size)
{
size_t size;
size = eeprom_get_size(eeprom);
zassert_not_equal(0, size, "Unexpected size of zero bytes");
}
/* Test write outside eeprom area */
ZTEST_USER(eeprom, test_out_of_bounds)
{
const uint8_t data[4] = { 0x01, 0x02, 0x03, 0x03 };
size_t size;
int rc;
size = eeprom_get_size(eeprom);
rc = eeprom_write(eeprom, size - 1, data, sizeof(data));
zassert_equal(-EINVAL, rc, "Unexpected error code (%d)", rc);
}
/* Test write and rewrite */
ZTEST_USER(eeprom, test_write_rewrite)
{
const uint8_t wr_buf1[4] = { 0xFF, 0xEE, 0xDD, 0xCC };
const uint8_t wr_buf2[sizeof(wr_buf1)] = { 0xAA, 0xBB, 0xCC, 0xDD };
uint8_t rd_buf[sizeof(wr_buf1)];
size_t size;
off_t address;
int rc;
size = eeprom_get_size(eeprom);
address = 0;
while (address < MIN(size, 16)) {
rc = eeprom_write(eeprom, address, wr_buf1, sizeof(wr_buf1));
zassert_equal(0, rc, "Unexpected error code (%d)", rc);
rc = eeprom_read(eeprom, address, rd_buf, sizeof(rd_buf));
zassert_equal(0, rc, "Unexpected error code (%d)", rc);
rc = memcmp(wr_buf1, rd_buf, sizeof(wr_buf1));
zassert_equal(0, rc, "Unexpected error code (%d)", rc);
address += sizeof(wr_buf1);
}
address = 0;
while (address < MIN(size, 16)) {
rc = eeprom_write(eeprom, address, wr_buf2, sizeof(wr_buf2));
zassert_equal(0, rc, "Unexpected error code (%d)", rc);
rc = eeprom_read(eeprom, address, rd_buf, sizeof(rd_buf));
zassert_equal(0, rc, "Unexpected error code (%d)", rc);
rc = memcmp(wr_buf2, rd_buf, sizeof(wr_buf2));
zassert_equal(0, rc, "Unexpected error code (%d)", rc);
address += sizeof(wr_buf2);
}
}
/* Test write at fixed address */
ZTEST_USER(eeprom, test_write_at_fixed_address)
{
const uint8_t wr_buf1[4] = { 0xFF, 0xEE, 0xDD, 0xCC };
uint8_t rd_buf[sizeof(wr_buf1)];
size_t size;
const off_t address = 0;
int rc;
size = eeprom_get_size(eeprom);
for (int i = 0; i < 16; i++) {
rc = eeprom_write(eeprom, address, wr_buf1, sizeof(wr_buf1));
zassert_equal(0, rc, "Unexpected error code (%d)", rc);
rc = eeprom_read(eeprom, address, rd_buf, sizeof(rd_buf));
zassert_equal(0, rc, "Unexpected error code (%d)", rc);
rc = memcmp(wr_buf1, rd_buf, sizeof(wr_buf1));
zassert_equal(0, rc, "Unexpected error code (%d)", rc);
}
}
/* Test write one byte at a time */
ZTEST_USER(eeprom, test_write_byte)
{
const uint8_t wr = 0x00;
uint8_t rd = 0xff;
int rc;
for (off_t address = 0; address < 16; address++) {
rc = eeprom_write(eeprom, address, &wr, 1);
zassert_equal(0, rc, "Unexpected error code (%d)", rc);
rc = eeprom_read(eeprom, address, &rd, 1);
zassert_equal(0, rc, "Unexpected error code (%d)", rc);
zassert_equal(wr - rd, rc, "Unexpected error code (%d)", rc);
}
}
/* Test write a pattern of bytes at increasing address */
ZTEST_USER(eeprom, test_write_at_increasing_address)
{
const uint8_t wr_buf1[8] = {0xEE, 0xDD, 0xCC, 0xBB, 0xFF, 0xEE, 0xDD,
0xCC };
uint8_t rd_buf[sizeof(wr_buf1)];
int rc;
for (off_t address = 0; address < 4; address++) {
rc = eeprom_write(eeprom, address, wr_buf1, sizeof(wr_buf1));
zassert_equal(0, rc, "Unexpected error code (%d)", rc);
rc = eeprom_read(eeprom, address, rd_buf, sizeof(rd_buf));
zassert_equal(0, rc, "Unexpected error code (%d)", rc);
rc = memcmp(wr_buf1, rd_buf, sizeof(wr_buf1));
zassert_equal(0, rc, "Unexpected error code (%d)", rc);
}
}
/* Test writing zero length data */
ZTEST_USER(eeprom, test_zero_length_write)
{
const uint8_t wr_buf1[4] = { 0x10, 0x20, 0x30, 0x40 };
const uint8_t wr_buf2[sizeof(wr_buf1)] = { 0xAA, 0xBB, 0xCC, 0xDD };
uint8_t rd_buf[sizeof(wr_buf1)];
int rc;
rc = eeprom_write(eeprom, 0, wr_buf1, sizeof(wr_buf1));
zassert_equal(0, rc, "Unexpected error code (%d)", rc);
rc = eeprom_read(eeprom, 0, rd_buf, sizeof(rd_buf));
zassert_equal(0, rc, "Unexpected error code (%d)", rc);
rc = memcmp(wr_buf1, rd_buf, sizeof(wr_buf1));
zassert_equal(0, rc, "Unexpected error code (%d)", rc);
rc = eeprom_write(eeprom, 0, wr_buf2, 0);
zassert_equal(0, rc, "Unexpected error code (%d)", rc);
rc = eeprom_read(eeprom, 0, rd_buf, sizeof(rd_buf));
zassert_equal(0, rc, "Unexpected error code (%d)", rc);
rc = memcmp(wr_buf1, rd_buf, sizeof(wr_buf1));
zassert_equal(0, rc, "Unexpected error code (%d)", rc);
}
static void *eeprom_setup(void)
{
zassert_true(device_is_ready(eeprom), "EEPROM device not ready");
return NULL;
}
ZTEST_SUITE(eeprom, NULL, eeprom_setup, NULL, NULL, NULL);
/* Run all of our tests on the given EEPROM device */
static void run_tests_on_eeprom(const struct device *dev)
{
eeprom = dev;
printk("Running tests on device \"%s\"\n", eeprom->name);
k_object_access_grant(eeprom, k_current_get());
ztest_run_all(NULL);
}
void test_main(void)
{
run_tests_on_eeprom(DEVICE_DT_GET(DT_ALIAS(eeprom_0)));
#if DT_NODE_HAS_STATUS(DT_ALIAS(eeprom_1), okay)
run_tests_on_eeprom(DEVICE_DT_GET(DT_ALIAS(eeprom_1)));
#endif /* DT_NODE_HAS_STATUS(DT_ALIAS(eeprom_1), okay) */
ztest_verify_all_test_suites_ran();
}