![]()
![]()
esp32s2 WIFI
我想利用NVS存储WiFi列表，定义了结构体如下：
typedef struct _wifi_conf wifi_conf_struct;
struct _wifi_conf
{
char *ssid;
char *password;
};
typedef struct _wifi_conf_node_t wifi_conf_node_t;
struct _wifi_conf_node_t
{
wifi_conf_struct item;
wifi_conf_node_t *p;
};
typedef struct _wifi_conf_link_t wifi_conf_link_t;
struct _wifi_conf_link_t
{
wifi_conf_node_t *np;
int length;
};
NVS存储函数：
esp_err_t nvs_write_data_to_flash_in_main(wifi_conf_link_t *wifi_conf_list_link)
{
//ESP_ERROR_CHECK(nvs_flash_erase());
nvs_handle handle;
size_t wifi_conf_size = 0;
int list_cont = wifi_conf_list_link->length;
struct _wifi_conf_node_t *tmp = wifi_conf_list_link->np;
struct _wifi_conf wifi_conf_list[list_cont];
int i = 0;
while (i < list_cont)
{
wifi_conf_list
wifi_conf_size = wifi_conf_size + sizeof(tmp->item);
tmp = tmp->p;
i++;
}
ESP_ERROR_CHECK(nvs_open(NVS_CUSTOMER, NVS_READWRITE, &handle));
ESP_ERROR_CHECK(nvs_set_i32(handle, DATA_KEY_2, list_cont));
ESP_ERROR_CHECK(nvs_set_blob(handle, DATA_KEY_1, wifi_conf_list, wifi_conf_size));
ESP_ERROR_CHECK(nvs_commit(handle));
// free(wifi_conf_list);
// free(tmp);
printf("NVS_WRITE：存储wifi信息完毕n");
nvs_close(handle);
return ESP_OK;
}
NVS读取函数：
struct _wifi_conf_link_t nvs_read_data_from_flash_in_main(void)
{
struct _wifi_conf_link_t wifi_conf_list_link_read = {NULL, 0};
nvs_handle handle;
int32_t value = 0;
esp_err_t err = nvs_open(NVS_CUSTOMER, NVS_READWRITE, &handle);
if (err != ESP_OK)
{
printf("Error (%s) opening NVS handle!n", esp_err_to_name(err));
}
else
{
printf("Donen");
// Read
printf("Reading restart counter from NVS ... ");
err = nvs_get_i32(handle, DATA_KEY_2, &value);
switch (err)
{
case ESP_OK:
printf("Donen");
printf("Restart counter = %dn", value);
break;
case ESP_ERR_NVS_NOT_FOUND:
printf("The value is not initialized yet!n");
break;
default:
printf("Error (%s) reading!n", esp_err_to_name(err));
}
}
if (value == 0)
{
return wifi_conf_list_link_read;
}
struct _wifi_conf wifi_conf_list[value];
size_t required_size = 0; // value will default to 0, if not set yet in NVS
nvs_get_blob(handle, DATA_KEY_1, NULL, &required_size);
ESP_ERROR_CHECK(nvs_get_blob(handle, DATA_KEY_1, &wifi_conf_list, &required_size));
nvs_close(handle);
for (int i = 0; i < value; i++)
{
wifi_conf_link_add(&wifi_conf_list_link_read, wifi_conf_list
//printf("%srn",wifi_conf_list
}
return wifi_conf_list_link_read;
}
问题来了：
wifi_conf_struct tmp = {"yangyanghome24", "abcd1234"};//重点
wifi_conf_link_del_all(&m_wifi_conf_link_main);
wifi_conf_link_add(&m_wifi_conf_link_main, tmp);
nvs_write_data_to_flash(&m_wifi_conf_link_main);
重启后，NVS读取正常，但是：
const char* pwd_selected_const = lv_textarea_get_text(textarea_pswd);
int nLen = strlen(pwd_selected_const);
char* pCh = (char*)malloc(sizeof(pwd_selected_const));
memcpy(pCh, pwd_selected_const, nLen + 1);
wifi_conf_struct scan_seleced_wifi_conf = {"splite_ssid_",pCh};//重点
重启后，读取出现乱码！！求帮助，困扰好长时间了。
更多回帖
