Eclipse plugin, c++, symbol not resolved within Initialisation of nested struct

[ESPI_1]

Initialisation of nested struct (Example below)
1) C: works well (placed in a C-file "main.c"),
2) C++: Fails with Problem/ Errors (placed in a CPP-file: "main.cpp" - Simply the renamed "main.c"):

using ESP-IDS Eclipse Plugin v1.0.0-beta4:
reportes Problem: "Symbol 'clk_speed' could not be resolved"



when I press "Compile" or "Lanch" within the Eclipse-IDE,
the terminal-window reports: "Build-Complete (0 Errors, 3 warning) …. -->the toolchain accepts the nested struct initialisation

but from Eclipse, I get an error-message-box:
"Errors in Workspace"/"Error exist in required Project"

Pressing "Proceed" in this error-message-box- everythin is OK,
- Programm works, and has accepted the nested struct initialisation -
- I2C runs
- a c++ test-class also runs well


Seems, that somehow the Eclipse "syntax-checker"? has switched ist behaviour when renaming the file from "main.c" to "main.cpp".

Any Ideas, how to fix it?
- the Phantom-Errors are disturbing,
- the Eclipse-Problem-list is populated with them.

Code: [Select all] [Expand/Collapse]

1.  
2. #ifdef __cplusplus
3. extern "C"
4. {
5. #endif
6.  
7. static const i2c_config_t cI2cConfig = {
8.         .mode       = I2C_MODE_MASTER,
9.         .sda_io_num = 21,
10.         .scl_io_num = 22,
11.         .sda_pullup_en = true,
12.         .scl_pullup_en = true,
13.         .master = {
14.                 .clk_speed = 100000 /* PROBLEM: Symbol 'clk_speed' could not be resolved when in .cpp file*/
15.                                                         /* <-> works well when placed  .c file */
16.                                                         /*  when simply ignoring the Problem-message - the toolchain produces correct output */
17.                                                         /* seems a Eclipse configuration Problem */
18.             }
19. };
20.  
21. void app_main(void)
22. {
23. ...
24.     i2c_bus_handle_t lI2cBusHandle = iot_i2c_bus_create(0, & cI2cConfig);
25. …

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[ESP_Sprite]

Moved to the IDE subforum.

[ESP_kondalkolipaka]

Hello, Could you get the latest version of the eclipse plugin and try it. We have fixed a couple of issues related to "unresolve inclusion" errors in our previous releases.

https://github.com/espressif/idf-eclips ... v1.0.0-rc1

Thanks.

[ESPI_1]

Thank for Your fast Reply

but the Problem is still there.

Can you copy the Code and test it in a .cpp file?


My STEPS
1) I Unistall the ESP-IDF Eclipse Plugin v1.0.0-beta4 in the market-place
+ Restart eclipe

2) In Eclipse-Help-InstallSoftware
I added espressif ide - https://dl.espressif.com/dl/idf-eclipse ... es/latest/
Checked all items, accept everything
+ Restart eclipse

now,
I Can see in the list of installed Software
- Espressif IDF Plugins for Eclipse 1.0.0.202002201116 com.espressif.idf.feature.feature.group ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD

ESP-IDF Eclipse Plugin v1.0.0-beta4 in is back again in the eclipse market-place as "Installed"

[chegewara]

I think its not issue with plugin, more like C vs C++ intialization. Try to move this outside extern "C" guard:

Code: Select all

static const i2c_config_t cI2cConfig = {
        .mode       = I2C_MODE_MASTER,
        .sda_io_num = 21,
        .scl_io_num = 22,
        .sda_pullup_en = true,
        .scl_pullup_en = true,
        .master = {
                .clk_speed = 100000 /* PROBLEM: Symbol 'clk_speed' could not be resolved when in .cpp file*/
                                                        /* <-> works well when placed  .c file */
                                                        /*  when simply ignoring the Problem-message - the toolchain produces correct output */
                                                        /* seems a Eclipse configuration Problem */
            }
};

Probably it wont help, but who knows.

[ESPI_1]

Still the same Problem when I moved the nested struct init outside the Extern "C"

Code: [Select all] [Expand/Collapse]

1.  
2. typedef enum{
3.     I2C_MODE_SLAVE = 0,   /*!< I2C slave mode */
4.     I2C_MODE_MASTER,      /*!< I2C master mode */
5.     I2C_MODE_MAX,
6. } i2c_mode_t;
7.  
8. /**
9.  * @brief I2C initialization parameters
10.  */
11. typedef struct{
12.     i2c_mode_t mode;     /*!< I2C mode */
13.     int sda_io_num;      /*!< GPIO number for I2C sda signal */
14.     int scl_io_num;      /*!< GPIO number for I2C scl signal */
15.     bool sda_pullup_en;  /*!< Internal GPIO pull mode for I2C sda signal*/
16.     bool scl_pullup_en;  /*!< Internal GPIO pull mode for I2C scl signal*/
17.  
18.     union {
19.         struct {
20.             uint32_t clk_speed;     /*!< I2C clock frequency for master mode, (no higher than 1MHz for now) */
21.         } master;                   /*!< I2C master config */
22.         struct {
23.             uint8_t addr_10bit_en;  /*!< I2C 10bit address mode enable for slave mode */
24.             uint16_t slave_addr;    /*!< I2C address for slave mode */
25.         } slave;                    /*!< I2C slave config */
26.     };
27. } i2c_config_t;
28.  
29.  
30. static const i2c_config_t cI2cConfig = {
31.         .mode       = I2C_MODE_MASTER,
32.         .sda_io_num = 21,
33.         .scl_io_num = 22,
34.         .sda_pullup_en = true,
35.         .scl_pullup_en = true,
36.         .master = {
37.                 .clk_speed = 100000 /* PROBLEM when in main.cpp file: this Symbol could not be resolved  */
38.             }
39. };
40.  
41. void UseNestedStruct(void)
42. {
43.     i2c_bus_handle_t lI2cBusHandle = iot_i2c_bus_create(0, &cI2cConfig);
44.     ssd1306_handle_t lSsd1306_handle = iot_ssd1306_create(lI2cBusHandle, SSD1306_I2C_ADDRESS);
45.     esp_err_t lEspErr;
46.     lEspErr = iot_ssd1306_clear_screen(lSsd1306_handle, 0);
47.     if(lEspErr){
48.         //...
49.     }
50. }
51.  
52.  
53. #ifdef __cplusplus
54. extern "C"
55. {
56. #endif
57.  
58. void app_main(void)
59. {
60. …
61.     UseNestedStruct();
62.     //old-code:   i2c_bus_handle_t lI2cBusHandle = iot_i2c_bus_create(0, & cI2cConfig);
63. …
64. }
65.  
66. #ifdef __cplusplus
67. }
68. #endif

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