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[axel_hpplt]

Hello everyone,

When I run this code :

Code: [Select all] [Expand/Collapse]

1. #include <stdio.h>
2. #include <string.h>
3. #include "esp_system.h"
4. #include "esp_console.h"
5. #include "esp_vfs_dev.h"
6. #include "esp_vfs_fat.h"
7. #include "esp_wifi.h"
8. #include "driver/uart.h"
9. #include "nvs_flash.h"
10. #include "esp_http_client.h"
11.  
12. #define EXAMPLE_ESP_WIFI_SSID "iPhone"
13. #define EXAMPLE_ESP_WIFI_PASS "XXXXXXXXXXXX"
14.  
15. void app_main(void)
16. {  
17.     char dest[100] = "https://XXXXXXXXXXXXXXXXX.com/connect.php?texte=";
18.     setvbuf(stdin, NULL, _IONBF, 0);
19.     setvbuf(stdout, NULL, _IONBF, 0);
20.     ESP_ERROR_CHECK(uart_driver_install(CONFIG_ESP_CONSOLE_UART_NUM, 256, 0, 0, NULL, 0));
21.     esp_vfs_dev_uart_use_driver(CONFIG_ESP_CONSOLE_UART_NUM);
22.     esp_vfs_dev_uart_port_set_rx_line_endings(CONFIG_ESP_CONSOLE_UART_NUM, ESP_LINE_ENDINGS_CR);
23.     esp_vfs_dev_uart_port_set_tx_line_endings(CONFIG_ESP_CONSOLE_UART_NUM, ESP_LINE_ENDINGS_CRLF);
24.     nvs_flash_init();
25.     wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
26.     ESP_ERROR_CHECK(esp_wifi_init(&cfg));
27.     wifi_config_t wifi_config = {
28.         .sta = {
29.             .ssid = EXAMPLE_ESP_WIFI_SSID,
30.             .password = EXAMPLE_ESP_WIFI_PASS,
31.             .threshold.authmode = WIFI_AUTH_WPA2_PSK,
32.             .pmf_cfg = {
33.                 .capable = true,
34.                 .required = false,
35.             },
36.         },
37.     };
38.     ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
39.     ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config));
40.     ESP_ERROR_CHECK(esp_wifi_start());
41.     esp_wifi_connect();
42.     printf("Connected...");
43.  
44.     char chr[40];
45.     while(1){
46.         printf("Enter Data : ");
47.         scanf("%39s\n", chr);
48.         printf(strcat(dest, chr));
49.         esp_http_client_config_t config = {
50.             .url = strcat(dest, chr)
51.         };
52.         esp_http_client_handle_t client = esp_http_client_init(&config);
53.         esp_http_client_perform(client);
54.         esp_http_client_cleanup(client);
55.     }
56. }
57.  

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I got this error :

Code: [Select all] [Expand/Collapse]

1. assertion "Invalid mbox" failed: file "C:/Users/XXXX/Desktop/esp-idf/components/lwip/lwip/src/api/tcpip.c", line 455, function: tcpip_send_msg_wait_sem

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I have no idea how to solve this problem.

Thanks you in advance.

AH.

[mbratch]

Why are you concatenating `chr` to `dest` twice?

Code: Select all

        printf(strcat(dest, chr));   // <-- here
        esp_http_client_config_t config = {
            .url = strcat(dest, chr)   // <-- here
        };

It's also not a good idea to concatenate to a literal string. Rather, you should do something like this:

Code: Select all

const char *pref = "https://XXXXXXXXXXXXXXXXX.com/connect.php?texte=";
char dest[100];
... // code that defines chr
strcpy(dest, pref);
strcat(dest, chr);    // <-- NOTE do this only once

[axel_hpplt]

Why are you concatenating `chr` to `dest` twice?

Code: Select all

        printf(strcat(dest, chr));   // <-- here
        esp_http_client_config_t config = {
            .url = strcat(dest, chr)   // <-- here
        };

It's also not a good idea to concatenate to a literal string. Rather, you should do something like this:

Code: Select all

const char *pref = "https://XXXXXXXXXXXXXXXXX.com/connect.php?texte=";
char dest[100];
... // code that defines chr
strcpy(dest, pref);
strcat(dest, chr);    // <-- NOTE do this only once

Thanks you for your reply. So, I've made your changes :

Code: [Select all] [Expand/Collapse]

1. #include <stdio.h>
2. #include <string.h>
3. #include "esp_system.h"
4. #include "esp_console.h"
5. #include "esp_vfs_dev.h"
6. #include "esp_vfs_fat.h"
7. #include "esp_wifi.h"
8. #include "driver/uart.h"
9. #include "nvs_flash.h"
10. #include "esp_http_client.h"
11.  
12. #define EXAMPLE_ESP_WIFI_SSID "iPhone de Axel"
13. #define EXAMPLE_ESP_WIFI_PASS "axelcroque2002"
14.  
15. void app_main(void)
16. {  
17.     const char *pref = "https://101testingesp32.000webhostapp.com/connect.php?texte=";
18.     char dest[100];
19.     setvbuf(stdin, NULL, _IONBF, 0);
20.     setvbuf(stdout, NULL, _IONBF, 0);
21.     ESP_ERROR_CHECK(uart_driver_install(CONFIG_ESP_CONSOLE_UART_NUM, 256, 0, 0, NULL, 0));
22.     esp_vfs_dev_uart_use_driver(CONFIG_ESP_CONSOLE_UART_NUM);
23.     esp_vfs_dev_uart_port_set_rx_line_endings(CONFIG_ESP_CONSOLE_UART_NUM, ESP_LINE_ENDINGS_CR);
24.     esp_vfs_dev_uart_port_set_tx_line_endings(CONFIG_ESP_CONSOLE_UART_NUM, ESP_LINE_ENDINGS_CRLF);
25.     nvs_flash_init();
26.     wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
27.     ESP_ERROR_CHECK(esp_wifi_init(&cfg));
28.     wifi_config_t wifi_config = {
29.         .sta = {
30.             .ssid = EXAMPLE_ESP_WIFI_SSID,
31.             .password = EXAMPLE_ESP_WIFI_PASS,
32.             .threshold.authmode = WIFI_AUTH_WPA2_PSK,
33.             .pmf_cfg = {
34.                 .capable = true,
35.                 .required = false,
36.             },
37.         },
38.     };
39.     ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
40.     ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config));
41.     ESP_ERROR_CHECK(esp_wifi_start());
42.     esp_wifi_connect();
43.     printf("Connected...");
44.  
45.     char chr[40];
46.     while(1){
47.         printf("Enter Data : ");
48.         scanf("%39s\n", chr);
49.         strcpy(dest, pref);
50.         esp_http_client_config_t config = {
51.             .url = strcat(dest, chr)
52.         };
53.         esp_http_client_handle_t client = esp_http_client_init(&config);
54.         esp_http_client_perform(client);
55.         esp_http_client_cleanup(client);
56.     }
57. }

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But, I get the same error. Does anyone else have a solution please ?

[ESP_Sprite]

Note that esp_wifi_connect() only *starts* a connection attempt, and will return more-or-loss immediately; the connection isn't actually created at that time. Suggest you check e.g. the examples in esp-idf to see how to properly wait until it is.

[axel_hpplt]

Note that esp_wifi_connect() only *starts* a connection attempt, and will return more-or-loss immediately; the connection isn't actually created at that time. Suggest you check e.g. the examples in esp-idf to see how to properly wait until it is.

Thanks for your answer, I looked at what you told me (esp-idf/examples/wifi/getting-started/station) but I didn't find the way to wait properly, could you enlighten me?

[fasani]

Hello Axel,
You need to use events, just as the example uses, in order to get it working.

[ESP_YJM]

Maybe you missed the esp_netif_init(), you can follow https://github.com/espressif/esp-idf/bl ... .c#L70-L73