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@ -37,20 +37,20 @@
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* @note Word = 4 Bytes in this file
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*/
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/* flash ENV system section index and size */
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/* flash ENV parameters index and size in system section */
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enum {
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/* data section ENV end address index in system section */
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FLASH_ENV_SYSTEM_INDEX_END_ADDR = 0,
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ENV_PARAM_INDEX_END_ADDR = 0,
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#ifdef FLASH_ENV_USING_CRC_CHECK
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/* data section CRC32 code index in system section */
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FLASH_ENV_SYSTEM_INDEX_DATA_CRC,
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ENV_PARAM_INDEX_DATA_CRC,
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#endif
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/* flash ENV system section word size */
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FLASH_ENV_SYSTEM_WORD_SIZE,
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/* flash ENV system section byte size */
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FLASH_ENV_SYSTEM_BYTE_SIZE = FLASH_ENV_SYSTEM_WORD_SIZE * 4,
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/* flash ENV parameters word size */
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ENV_PARAM_WORD_SIZE,
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/* flash ENV parameters byte size */
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ENV_PARAM_BYTE_SIZE = ENV_PARAM_WORD_SIZE * 4,
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};
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/* default ENV set, must be initialized by user */
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@ -167,7 +167,7 @@ static uint32_t get_env_system_addr(void) {
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*/
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static uint32_t get_env_data_addr(void) {
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FLASH_ASSERT(env_start_addr);
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return env_start_addr + FLASH_ENV_SYSTEM_BYTE_SIZE;
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return env_start_addr + ENV_PARAM_BYTE_SIZE;
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}
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/**
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@ -178,7 +178,7 @@ static uint32_t get_env_data_addr(void) {
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*/
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static uint32_t get_env_end_addr(void) {
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/* it is the first word */
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return env_cache[FLASH_ENV_SYSTEM_INDEX_END_ADDR];
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return env_cache[ENV_PARAM_INDEX_END_ADDR];
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}
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/**
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@ -188,7 +188,7 @@ static uint32_t get_env_end_addr(void) {
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* @param end_addr ENV end address
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*/
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static void set_env_end_addr(uint32_t end_addr) {
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env_cache[FLASH_ENV_SYSTEM_INDEX_END_ADDR] = end_addr;
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env_cache[ENV_PARAM_INDEX_END_ADDR] = end_addr;
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}
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/**
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@ -231,42 +231,35 @@ uint32_t flash_get_env_write_bytes(void) {
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*/
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static FlashErrCode write_env(const char *key, const char *value) {
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FlashErrCode result = FLASH_NO_ERR;
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uint16_t env_str_index = 0, env_str_length, i;
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char *env_str;
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size_t ker_len = strlen(key), value_len = strlen(value), env_str_len;
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char *env_cache_bak = (char *)env_cache;
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/* calculate ENV storage length, contain '=' and '\0'. */
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env_str_length = strlen(key) + strlen(value) + 2;
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if (env_str_length % 4 != 0) {
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env_str_length = (env_str_length / 4 + 1) * 4;
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env_str_len = ker_len + value_len + 2;
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if (env_str_len % 4 != 0) {
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env_str_len = (env_str_len / 4 + 1) * 4;
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}
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/* check capacity of ENV */
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if (env_str_length + get_env_data_size() >= flash_get_env_total_size()) {
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if (env_str_len + get_env_data_size() >= flash_get_env_total_size()) {
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return FLASH_ENV_FULL;
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}
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/* use ram to process string key=value\0 */
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env_str = flash_malloc(env_str_length * sizeof(char));
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FLASH_ASSERT(env_str);
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memset(env_str, 0, env_str_length * sizeof(char));
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/* calculate current ENV ram cache end address */
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env_cache_bak += flash_get_env_write_bytes();
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/* copy key name */
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for (env_str_index = 0; env_str_index < strlen(key); env_str_index++) {
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env_str[env_str_index] = key[env_str_index];
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}
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memcpy(env_cache_bak, key, ker_len);
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env_cache_bak += ker_len;
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/* copy equal sign */
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env_str[env_str_index] = '=';
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env_str_index++;
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*env_cache_bak = '=';
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env_cache_bak++;
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/* copy value */
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for (i = 0; i < strlen(value); env_str_index++, i++) {
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env_str[env_str_index] = value[i];
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}
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//TODO ¿¼ÂÇ¿É·ñÓÅ»¯
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memcpy((char *) env_cache + flash_get_env_write_bytes(), (uint32_t *) env_str,
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env_str_length);
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set_env_end_addr(get_env_end_addr() + env_str_length);
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/* free ram */
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flash_free(env_str);
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env_str = NULL;
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memcpy(env_cache_bak, value, value_len);
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env_cache_bak += value_len;
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/* fill '\0' for string end sign */
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*env_cache_bak = '\0';
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env_cache_bak ++;
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/* fill '\0' for word alignment */
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memset(env_cache_bak, 0, env_str_len - (ker_len + value_len + 2));
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set_env_end_addr(get_env_end_addr() + env_str_len);
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return result;
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}
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@ -290,7 +283,7 @@ static uint32_t *find_env(const char *key) {
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}
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/* from data section start to data section end */
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env_start = (char *) ((char *) env_cache + FLASH_ENV_SYSTEM_BYTE_SIZE);
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env_start = (char *) ((char *) env_cache + ENV_PARAM_BYTE_SIZE);
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env_end = (char *) ((char *) env_cache + flash_get_env_write_bytes());
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/* ENV is null */
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@ -304,11 +297,15 @@ static uint32_t *find_env(const char *key) {
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env_bak = strstr(env, key);
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/* the key name length must be equal */
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if (env_bak && (env_bak[strlen(key)] == '=')) {
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env_cache_addr = (uint32_t *) env;
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env_cache_addr = (uint32_t *) env_bak;
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break;
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} else {
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/* next ENV */
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env += strlen(env) + 1;
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/* next ENV and word alignment */
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if ((strlen(env) + 1) % 4 == 0) {
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env += strlen(env) + 1;
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} else {
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env += ((strlen(env) + 1) / 4 + 1) * 4;
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}
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}
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}
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return env_cache_addr;
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@ -360,7 +357,7 @@ static FlashErrCode create_env(const char *key, const char *value) {
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FlashErrCode flash_del_env(const char *key){
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FlashErrCode result = FLASH_NO_ERR;
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char *del_env_str = NULL;
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uint32_t del_env_length, remain_env_length;
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size_t del_env_length, remain_env_length;
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FLASH_ASSERT(key);
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FLASH_ASSERT(env_cache);
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@ -389,8 +386,8 @@ FlashErrCode flash_del_env(const char *key){
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del_env_length = (del_env_length / 4 + 1) * 4;
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}
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/* calculate remain ENV length */
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remain_env_length =
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get_env_data_size() - ((uint32_t) del_env_str - (uint32_t) env_cache);
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remain_env_length = get_env_data_size()
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- (((uint32_t) del_env_str + del_env_length) - ((uint32_t) env_cache + ENV_PARAM_BYTE_SIZE));
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/* remain ENV move forward */
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memcpy(del_env_str, del_env_str + del_env_length, remain_env_length);
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/* reset ENV end address */
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@ -458,9 +455,9 @@ char *flash_get_env(const char *key) {
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* Print ENV.
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*/
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void flash_print_env(void) {
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uint32_t *env_cache_data_addr = env_cache + FLASH_ENV_SYSTEM_WORD_SIZE,
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uint32_t *env_cache_data_addr = env_cache + ENV_PARAM_WORD_SIZE,
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*env_cache_end_addr =
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(uint32_t *) (env_cache + FLASH_ENV_SYSTEM_WORD_SIZE + get_env_data_size() / 4);
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(uint32_t *) (env_cache + ENV_PARAM_WORD_SIZE + get_env_data_size() / 4);
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uint8_t j;
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char c;
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@ -489,7 +486,7 @@ void flash_load_env(void) {
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FLASH_ASSERT(env_cache);
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/* read ENV end address from flash */
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flash_read(get_env_system_addr() + FLASH_ENV_SYSTEM_INDEX_END_ADDR * 4, &env_end_addr, 4);
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flash_read(get_env_system_addr() + ENV_PARAM_INDEX_END_ADDR * 4, &env_end_addr, 4);
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/* if ENV is not initialize or flash has dirty data, set default for it */
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if ((env_end_addr == 0xFFFFFFFF) || (env_end_addr > env_start_addr + env_total_size)) {
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flash_env_set_default();
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@ -497,14 +494,14 @@ void flash_load_env(void) {
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/* set ENV end address */
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set_env_end_addr(env_end_addr);
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env_cache_bak = env_cache + FLASH_ENV_SYSTEM_WORD_SIZE;
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env_cache_bak = env_cache + ENV_PARAM_WORD_SIZE;
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/* read all ENV from flash */
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flash_read(get_env_data_addr(), env_cache_bak, get_env_data_size());
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#ifdef FLASH_ENV_USING_CRC_CHECK
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/* read ENV CRC code from flash */
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flash_read(get_env_system_addr() + FLASH_ENV_SYSTEM_INDEX_DATA_CRC * 4,
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&env_cache[FLASH_ENV_SYSTEM_INDEX_DATA_CRC] , 4);
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flash_read(get_env_system_addr() + ENV_PARAM_INDEX_DATA_CRC * 4,
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&env_cache[ENV_PARAM_INDEX_DATA_CRC] , 4);
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/* if ENV CRC32 check is fault, set default for it */
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if (!env_crc_is_ok()) {
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@ -526,7 +523,7 @@ FlashErrCode flash_save_env(void) {
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#ifdef FLASH_ENV_USING_CRC_CHECK
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/* calculate and cache CRC32 code */
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env_cache[FLASH_ENV_SYSTEM_INDEX_DATA_CRC] = calc_env_crc();
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env_cache[ENV_PARAM_INDEX_DATA_CRC] = calc_env_crc();
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#endif
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/* erase ENV */
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@ -571,8 +568,8 @@ static uint32_t calc_env_crc(void) {
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extern uint32_t calc_crc32(uint32_t crc, const void *buf, size_t size);
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/* Calculate the ENV end address and all ENV data CRC32.
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* The 4 is ENV end address bytes size. */
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crc32 = calc_crc32(crc32, &env_cache[FLASH_ENV_SYSTEM_INDEX_END_ADDR], 4);
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crc32 = calc_crc32(crc32, &env_cache[FLASH_ENV_SYSTEM_WORD_SIZE], get_env_data_size());
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crc32 = calc_crc32(crc32, &env_cache[ENV_PARAM_INDEX_END_ADDR], 4);
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crc32 = calc_crc32(crc32, &env_cache[ENV_PARAM_WORD_SIZE], get_env_data_size());
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FLASH_DEBUG("Calculate Env CRC32 number is 0x%08X.\n", crc32);
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return crc32;
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@ -586,7 +583,7 @@ static uint32_t calc_env_crc(void) {
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* @return true is ok
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*/
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static bool_t env_crc_is_ok(void) {
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if (calc_env_crc() == env_cache[FLASH_ENV_SYSTEM_INDEX_DATA_CRC]) {
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if (calc_env_crc() == env_cache[ENV_PARAM_INDEX_DATA_CRC]) {
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FLASH_DEBUG("Verify Env CRC32 result is OK.\n");
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return TRUE;
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} else {
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armink
11 years ago