Пример #1
0
/**
 * \brief Fill the specified pattern to AT24CXX.
 *
 * \param u32_start_address  The first address to be filled.
 * \param u32_end_address  The last address to be filled.
 * \param u8_pattern  The pattern to be filled.
 *
 * \return AT24C_WRITE_SUCCESS if the pattern was filled, AT24C_WRITE_FAIL
 * otherwise.
 */
uint32_t at24cxx_fill_pattern(uint32_t u32_start_address,
		uint32_t u32_end_address, uint8_t u8_pattern)
{
	uint32_t addr;

	for (addr = u32_start_address; addr < u32_end_address + 1; addr++) {
		if (at24cxx_write_byte((uint16_t)addr, u8_pattern) !=
				AT24C_WRITE_SUCCESS) {
			return AT24C_WRITE_FAIL;
		}
	}

	return AT24C_WRITE_SUCCESS;
}
/**
 * \brief Test data read/write API functions.
 *
 * This test calls the data read/write API functions and check the data consistency.
 *
 * \param test Current test case.
 */
static void run_test_data_read_write(const struct test_case *test)
{
	twi_options_t opt;
	uint8_t data;
	
	/* Configure the options of TWI driver */
	opt.master_clk = sysclk_get_main_hz();
	opt.speed = AT24C_TWI_CLK;

	if (twi_master_init(BOARD_AT24C_TWI_INSTANCE, &opt) != TWI_SUCCESS) {
		puts("AT24CXX initialization is failed.\r");
	}

	if (at24cxx_write_byte(AT24C_MEM_ADDR, 0xA5) != AT24C_WRITE_SUCCESS) {
		puts("AT24CXX write packet is failed.\r");
	}

	mdelay(10);

	if (at24cxx_read_byte(AT24C_MEM_ADDR,  &data) != AT24C_READ_SUCCESS) {
		puts("AT24CXX read packet is failed.\r");
	}
	test_assert_true(test, data == 0xA5, "Data is not consistent!");
}