esp_err_t err = nvs_get_str(_handle, key, value, &len); if(err){ log_e("nvs_get_str len fail: %s %s", key, nvs_error(err)); return String(defaultValue); } char buf[len]; value = buf; err = nvs_get_str(_handle, key, value, &len); if(err){ log_e("nvs_get_str ...
err = nvs_get_str (my_handle, SMARTCONFIG_SSID, wifi_ssid, &len); if(err==ESP_OK) ESP_LOGI(TAG, "wifi_ssid = %s\n", wifi_ssid); //密码 len=64; err = nvs_get_str (my_handle, SMARTCONFIG_PASSWORD, wifi_password, &len); if(err==ESP_OK) ESP_LOGI(TAG, "wifi_password = ...
esp_err_tmy_test_str(void){nvs_handle_tmy_handle;esp_err_terr;charget_char[30] = {0};// Openerr = nvs_open(TEST_NAMESPACE, NVS_READWRITE, &my_handle);if(err != ESP_OK)returnerr;// Readsize_trequired_size =0; err = nvs_get_str(my_handle,"str_test",NULL,&required_size);...
nvs_open("WIFICONFIG", NVS_READWRITE, &my_handle);//打开//ESP_ERROR_CHECK(nvs_set_str(my_handle, "WIFI_SSID", "xz220"));//写//ESP_ERROR_CHECK(nvs_set_str(my_handle, "WIFI_PASSWORD", "www.kyhmy.com"));//写size_t required_size_SSID; nvs_get_str(my_handle,"WIFI_SSID", N...
toCharArray(wifi_slot, kL + 1); esp_err_t err = nvs_get_str(my_handle, wifi_slot, NULL, &string_size); value = (char *)malloc(string_size); err = nvs_get_str(my_handle, wifi_slot, value, &string_size); nvs_close(my_handle); return String(value); } else Serial.println("...
Returning ESP_ERR_NVS_NOT_FOUND on the nvs_get_str() function only. If it was a nvs_open_mode_t problem I would think it would error before that? Tried PR #6585 [IDF release/v4.4], still the same. Sys64736 mentioned this issue Apr 23, 2022 esp32c3 - SPIFFS, FFat, fail to...
打开NVS,使用nvs_open函数: 在这里插入图片描述 在示例中,第二个参数应该是表示打开的区域是可以读也可以写的 ,只读的是NVS_READONLY: 在这里插入图片描述 读写操作,使用nvs_get_*(*号表示不同的数据类型,比如nvs_get_i32、nvs_get_u16) 读操作,使用nvs_set_*进行写操作: ...
1、接口更加安全:NVS不直接操作address. 对于终端用户而已, 更加安全。 2、接口使用接近用户习惯,NVS 接口类似于电脑上操作文件一样: 打开文件(nvs_open), 写文件(nvs_set_xxx), 保存文件(nvs_commit), 关闭文件(nvs_close) 打开文件(nvs_open), 读取文件(nvs_get_xxx), 关闭文件(nvs_close) ...
//这两个的长度需要特殊操作esp_err_t nvs_get_str(nvs_handle_t handle,constchar*key,char*out_value,size_t*length);esp_err_tnvs_get_blob(nvs_handle_t handle,constchar*key,void*out_value,size_t*length); 2.5 写入函数 esp_err_t nvs_set_i8(nvs_handle_t handle,constchar*key,int8_tva...
{ printf("key2 long down\r\n"); KEY_KEY_READ = NO_KEY_PRES; ESP_ERROR_CHECK(nvs_flash_erase()); nvs_flash_init(); esp_restart(); } 导致nvs_get_str(wificfg_nvs_handler,"wifi_ssid",wifi_ssid,&len)出现异常错误,abort() was called at PC 0x4038480d on core 01...