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("wificonfig", NVS_READWRITE, &wificonfig_handle);
if (err != ESP_OK)
{
ESP_LOGI(TAG, "Error (%s) opening NVS handle!\n", esp_err_to_name(err));
}
else
{
ESP_LOGI(TAG, "opening NVS handle Done\n");
ESP_LOGI(TAG, "Get ssid and pass from NVS ... \n");
// 获取是否有wifi信息的标志位
err = nvs_get_u32(wificonfig_handle, "flag", &flag);
if (err == ESP_OK)
{
ESP_LOGI(TAG, "Get wifi config");
}
else
{
ESP_LOGI(TAG, "get err =0x%x\n", err);
}
if (!flag)
{
//没有返回0，没有获得连接标志
ESP_LOGI(TAG, "NO Get wifi config flag!\n");
}
else
{
// 获取名称
len = WIFI_LEN;
err = nvs_get_str(wificonfig_handle, "ssid", wifi_ssid, &len);
if (err == ESP_OK)
{
ESP_LOGI(TAG, "Get ssid success!\n");
ESP_LOGI(TAG, "ssid=%s\n", wifi_ssid);
ESP_LOGI(TAG, "ssid_len=%d\n", len);
}
else
{
ESP_LOGI(TAG, "get err =0x%x\n", err);
ESP_LOGI(TAG, "Get ssid fail!\n");
}
// 获取密码
len = WIFI_LEN;
err = nvs_get_str(wificonfig_handle, "pass", wifi_passwd, &len);
if (err == ESP_OK)
{
ESP_LOGI(TAG, "Get key success!\n");
ESP_LOGI(TAG, "password=%s\n", wifi_passwd);
ESP_LOGI(TAG, "password_len=%d\n", len);
}
else
{
ESP_LOGI(TAG, "get err =0x%x\n", err);
ESP_LOGI(TAG, "Get ssid fail!\n");
}
}
err = nvs_commit(wificonfig_handle);
if (err == ESP_OK)
ESP_LOGI(TAG, "nvs_commit Done\n");
else
ESP_LOGI(TAG, "nvs_commit Failed!\n");
}
// 关闭nvs
nvs_close(wificonfig_handle);
return flag;
}
写入WiFi信息
/**
* @description: 在nvs中写入 wifi ssid pass
* @param {char} *wifi_ssid
* @param {char} *wifi_passwd
* @return {*}
*/
void Set_nvs_wifi(char *wifi_ssid, char *wifi_passwd)
{
esp_err_t err;
nvs_handle_t my_handle;
err = nvs_open("wificonfig", NVS_READWRITE, &my_handle);
if (err != ESP_OK)
{
ESP_LOGI(TAG, "Error (%s) opening NVS handle!\n", esp_err_to_name(err));
}
else
{
ESP_LOGI(TAG, "opening NVS handle Done\n");
ESP_LOGI(TAG, "Set ssid and pass from NVS ... \n");
//写入ssid
err = nvs_set_str(my_handle, "ssid", wifi_ssid);
if (err == ESP_OK)
ESP_LOGI(TAG, "set ssid success!\n");
else
ESP_LOGI(TAG, "set ssid fail!\n");
//写入pass
err = nvs_set_str(my_handle, "pass", wifi_passwd);
if (err == ESP_OK)
ESP_LOGI(TAG, "set password success!\n");
else
ESP_LOGI(TAG, "set password fail!\n");
err = nvs_commit(my_handle);
if (err == ESP_OK)
ESP_LOGI(TAG, "nvs_commit Done\n");
else
ESP_LOGI(TAG, "nvs_commit Failed!\n");
}
// 关闭nvs
nvs_close(my_handle);
ESP_LOGI(TAG, "--------------------------------------\n");
}
写入标志位和擦除标志位
/**
* @description: 设置WiFi信息标记
* @return {*}
*/
void Set_nvs_wifi_flag(void)
{
esp_err_t err;
nvs_handle_t my_handle;
uint32_t flag = 1;
err = nvs_open("wificonfig", NVS_READWRITE, &my_handle);
if (err != ESP_OK)
{
ESP_LOGI(TAG, "Error (%s) opening NVS handle!\n", esp_err_to_name(err));
}
else
{
ESP_LOGI(TAG, "opening NVS handle Done\n");
ESP_LOGI(TAG, "Set wifi flag from NVS ... \n");
err = nvs_set_u32(my_handle, "flag", flag);
if
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