C++ (Cpp) eeprom_bus_write примеры использования

Пример #1

Файл: env_eeprom.c Проект: Brian1013/u-boot

int saveenv(void)
{
	env_t	env_new;
	ssize_t	len;
	char	*res;
	int	rc;
	unsigned int off	= CONFIG_ENV_OFFSET;
#ifdef CONFIG_ENV_OFFSET_REDUND
	unsigned int off_red	= CONFIG_ENV_OFFSET_REDUND;
	char flag_obsolete	= OBSOLETE_FLAG;
#endif

	BUG_ON(env_ptr != NULL);

	res = (char *)&env_new.data;
	len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, 0, NULL);
	if (len < 0) {
		error("Cannot export environment: errno = %d\n", errno);
		return 1;
	}
	env_new.crc = crc32(0, env_new.data, ENV_SIZE);

#ifdef CONFIG_ENV_OFFSET_REDUND
	if (gd->env_valid == 1) {
		off	= CONFIG_ENV_OFFSET_REDUND;
		off_red	= CONFIG_ENV_OFFSET;
	}

	env_new.flags = ACTIVE_FLAG;
#endif

	rc = eeprom_bus_write(CONFIG_SYS_DEF_EEPROM_ADDR,
			      off, (uchar *)&env_new, CONFIG_ENV_SIZE);

#ifdef CONFIG_ENV_OFFSET_REDUND
	if (rc == 0) {
		eeprom_bus_write(CONFIG_SYS_DEF_EEPROM_ADDR,
				 off_red + offsetof(env_t, flags),
				 (uchar *)&flag_obsolete, 1);

		if (gd->env_valid == 1)
			gd->env_valid = 2;
		else
			gd->env_valid = 1;
	}
#endif
	return rc;
}

Пример #2

Файл: env_eeprom.c Проект: BuloZB/u-boot-imx

int saveenv(void)
{
	env_t	env_new;
	int	rc;
	unsigned int off	= CONFIG_ENV_OFFSET;
#ifdef CONFIG_ENV_OFFSET_REDUND
	unsigned int off_red	= CONFIG_ENV_OFFSET_REDUND;
	char flag_obsolete	= OBSOLETE_FLAG;
#endif

	BUG_ON(env_ptr != NULL);

	rc = env_export(&env_new);
	if (rc)
		return rc;

#ifdef CONFIG_ENV_OFFSET_REDUND
	if (gd->env_valid == 1) {
		off	= CONFIG_ENV_OFFSET_REDUND;
		off_red	= CONFIG_ENV_OFFSET;
	}

	env_new.flags = ACTIVE_FLAG;
#endif

	rc = eeprom_bus_write(CONFIG_SYS_DEF_EEPROM_ADDR,
			      off, (uchar *)&env_new, CONFIG_ENV_SIZE);

#ifdef CONFIG_ENV_OFFSET_REDUND
	if (rc == 0) {
		eeprom_bus_write(CONFIG_SYS_DEF_EEPROM_ADDR,
				 off_red + offsetof(env_t, flags),
				 (uchar *)&flag_obsolete, 1);

		if (gd->env_valid == 1)
			gd->env_valid = 2;
		else
			gd->env_valid = 1;
	}
#endif
	return rc;
}