使用NVS Partition Generator Utility nvs读取不到key值

[ChiShaoJun]

https://docs.espressif.com/projects/esp ... n_gen.html
我这边是按照上面的流程进行操作
要生成的test.csv

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1. key,type,encoding,value
2. namespace_name,namespace,,
3. key1,data,u8,1

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转.bin指令

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1. python ~/esp/esp-idf/components/nvs_flash/nvs_partition_generator/nvs_partition_gen.py --input test.csv --output test.bin --size 0x6000

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分区表也进行了修改

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1. # Espressif ESP32 Partition Table
2. #
3. # Note: if you change the phy_init or app partition offset
4. #       make sure to change the offset in Kconfig.projbuild
5. #
6. # Name,   Type, SubType, Offset,  Size, Flags
7. nvs,      data, nvs,     0x9000,  0x6000,
8. phy_init, data, phy,     0xf000,  0x1000,
9. factory,  app,  factory, 0x10000, 1200000,

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读取的函数

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1. #define TEST_STORAGE_NAMESPACE "namespace_name"    //nvs测试名字空间
2. uint8_t test_data = 0;
3. /******************************
4. * 函数名称：get_nvs_csv_data
5. * 作    者：Kyle
6. * 日    期：20190419
7. * 描    述：测试nvs
8. * 输入参数：无
9. * 返 回 值：无
10. ******************************/
11. esp_err_t get_nvs_csv_data(void)
12. {
13.     esp_err_t ret = ESP_FAIL;
14.     esp_err_t err = ESP_FAIL;
15.     nvs_handle read_nvs_handle;
16.     size_t required_size = 1;
17.     ESP_LOGI(SPP_TAG, "required_size:%d\n",required_size);
18.  
19.     // Open
20.     ESP_ERROR_CHECK(nvs_open(TEST_STORAGE_NAMESPACE, NVS_READWRITE, &read_nvs_handle));
21.  
22.     // Read
23.     err = nvs_get_blob(read_nvs_handle, "key1", &test_data, &required_size);
24.     ESP_LOGI(SPP_TAG, "[ test data ]:%d\n",test_data);
25.     if(err == ESP_OK)
26.     {
27.         ESP_LOGI(SPP_TAG, "[ test data ]:%d\n",test_data);
28.         ret = ESP_OK;
29.     }
30.     else if(err == ESP_ERR_NVS_NOT_FOUND)
31.     {
32.         ESP_LOGI(SPP_TAG,"ESP_ERR_NVS_NOT_FOUND\n");
33.     }
34.  
35.     // Commit
36.     ESP_ERROR_CHECK(nvs_commit(read_nvs_handle));
37.  
38.     // Close
39.     nvs_close(read_nvs_handle);
40.  
41.     return ret;
42. }

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但是得到的日志出来是

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1. I (264) SPP_ACCEPTOR_DEMO: required_size:1
2.  
3. I (274) SPP_ACCEPTOR_DEMO: [ test data ]:0
4.  
5. I (274) SPP_ACCEPTOR_DEMO: ESP_ERR_NVS_NOT_FOUND

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if the requested key doesn't exist，key值不存在，请问下我是哪一步出现问题呢？

[ChiShaoJun]

问题找到了，把read的函数换成nvs_get_u8就好了

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I (262) SPP_ACCEPTOR_DEMO: required_size:1

I (272) SPP_ACCEPTOR_DEMO: [ test data ]:1

I (272) SPP_ACCEPTOR_DEMO: [ test data ]:1

日志打印