Hi all,
I am trying to upload a file to server, let's say firebase realtime using esp32.
However in the example code in esp32_http_client, there is only demo for uploading a string.
I wonder how can I upload a file, which size around 2 MB, I stored it in SD card.
Thank you very much.

Hi all,
Currently, I want to terminate the connection between esp32 and mobile application by pressing a button.
How can I do that?
I have checked and then found this function:

esp_ble_gatts_close(gatts_if, conn_id);

But I don't know how to implemet this function into my code, where can I find ...

Hi all,
Currently, I am working on a esp32 project which used esp -idf version 3.1.2.
Recently, I facing a problem, that the esp32 suddenly very randomly cause reset by itself with the logging info like this:

ets Jun 8 2016 00:22:57

rst:0x8 (TG1WDT_SYS_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT ...

I have fixed it, due to the different in char_handle. It should be instead of .
Thank you very much.

Funny thing is that, when I tried gatt_server example, the function worked. Even that I put it in call back function. Actually in the example, they put it in the call back function.
It like this:
case ESP_GATTS_WRITE_EVT: {
ESP_LOGI(GATTS_TAG, "GATT_WRITE_EVT, conn_id %d, trans_id %d, handle %d ...

Hi,
Thank you for your response,
The thing is when I try to log the error of the function:
void testNotify()
{
// uint8_t indicate_data[12] = {0};
uint8_t notify_data[1] = {48};
int error = 0;
while (1)
{
ESP_LOGI(GATTS_TABLE_TAG, "testNotify");
// for (int x = 0; x < 6; x ...

Thank you for your response,
I took your advice and then, I tried to do something like this:
Instead of directly used function esp_ble_gatts_send_indicate inside call back function. I used a task insteads.
case ESP_GATTS_WRITE_EVT:
ESP_LOGI(GATTS_TABLE_TAG, "ESP_GATTS_WRITE_EVT, write value ...

Dear All,
I am working with example gatt_security_server in esp-idf and when I tested it with nordic mobile application, it just did not return any value to the nordic.
So I check the example code and found out that they just leave it blank like this :
case ESP_GATTS_WRITE_EVT:
ESP_LOGI(GATTS ...

Thank you very much

Dear all,
I have developed a application based on esp idf version 3.1.2. My device is espressif esp32 - wroom - 32.
When I connect to the device, it works fine, but some how after 1 or 2 minute, it automatically disconnect with the following log:
BT_APPL: bta_gattc_conn_cback() - cif=3 connected=0 ...