/**
* Test nvm_eeprom_split_write_page()
*
* Test procedure:
* - Erase TEST_SPLIT_WRITE_PAGE page and then write 2 bytes
* to TEST_SPLIT_WRITE_PAGE by using an atomic write
* - Write 1 additional byte at another location using a split write
* - Verify that all 3 bytes written correctly and that the rest of the page
* is erased.
*
* \return STATUS_OK if test succeeded, otherwise ERR_BAD_DATA
*/
static status_code_t test_split_write(void)
{
/* Erase and then program two bytes into the page */
set_buffer(buffer, EEPROM_ERASED);
buffer[1] = 0xaa;
buffer[2] = 0x19;
nvm_eeprom_load_byte_to_buffer(1, buffer[1]);
nvm_eeprom_load_byte_to_buffer(2, buffer[2]);
nvm_eeprom_atomic_write_page(TEST_SPLIT_WRITE_PAGE);
/*
* Write another value to the EEPROM and then verify that all three bytes
* are present, ie. the split write does not delete the first two bytes.
*/
buffer[3] = 0xa7;
nvm_eeprom_load_byte_to_buffer(3, buffer[3]);
nvm_eeprom_split_write_page(TEST_SPLIT_WRITE_PAGE);
if (is_eeprom_page_equal_to_buffer(TEST_SPLIT_WRITE_PAGE, buffer)) {
return STATUS_OK;
}
return ERR_BAD_DATA;
}
/**
* \brief Test EEPROM split write
*
* This test writes two bytes to test page \ref TEST_SPLIT_WRITE_PAGE with an
* atomic write operation, then writes a third byte to the same page with a
* split write operation before verifying that the page contains all three
* bytes.
*
* \param test Current test case.
*/
static void run_eeprom_split_write_test(const struct test_case *test)
{
uint8_t buffer[EEPROM_PAGE_SIZE];
bool success;
/* Erase and then program two bytes into the page */
set_buffer(buffer, EEPROM_ERASED);
buffer[1] = 0xaa;
buffer[2] = 0x19;
nvm_eeprom_load_byte_to_buffer(1, buffer[1]);
nvm_eeprom_load_byte_to_buffer(2, buffer[2]);
nvm_eeprom_atomic_write_page(TEST_SPLIT_WRITE_PAGE);
/*
* Write another value to the EEPROM and then verify that all three bytes
* are present, ie. the split write does not delete the first two bytes.
*/
buffer[3] = 0xa7;
nvm_eeprom_load_byte_to_buffer(3, buffer[3]);
nvm_eeprom_split_write_page(TEST_SPLIT_WRITE_PAGE);
success = is_eeprom_page_equal_to_buffer(TEST_SPLIT_WRITE_PAGE, buffer);
test_assert_true(test, success, "Split write failed");
}
