Found the issue myself...

Silly mistake. I had a component with a file called "string.h". That is not a good idea...

Hi all, The search is broken on this site, so I was unable to seach for this question. I have a ESP32 C++ project, running on IDF version 4.1. When I include the <cstring> header like so: #include <cstring> /** * Main entry point application */ void app_main() { char foo[100]; strncpy(foo, "test", s...

Same problem here.

Does anyone have an example of this working?

https://docs.espressif.com/projects/esp-idf/en/stable/api-reference/bluetooth/esp_gap_bt.html#_CPPv418esp_bt_gap_set_pin17esp_bt_pin_type_t7uint8_t17esp_bt_pin_code_t https://github.com/espressif/esp-idf/blob/6517c5033aab27afe491e433d6beeba93dfb1aa7/examples/bluetooth/bluedroid/classic_bt/bt_spp_ac...

If you are flashing this code, i am guessing it is just echoing received data: case ESP_SPP_DATA_IND_EVT: #if (SPP_SHOW_MODE == SPP_SHOW_DATA) ESP_LOGI(SPP_TAG, "ESP_SPP_DATA_IND_EVT len=%d handle=%d", param->data_ind.len, param->data_ind.handle); if (param->data_ind.len < 1023) { snprintf(buf, (si...

https://docs.espressif.com/projects/esp-idf/en/stable/api-reference/bluetooth/esp_gap_bt.html#_CPPv418esp_bt_gap_set_pin17esp_bt_pin_type_t7uint8_t17esp_bt_pin_code_t https://github.com/espressif/esp-idf/blob/6517c5033aab27afe491e433d6beeba93dfb1aa7/examples/bluetooth/bluedroid/classic_bt/bt_spp_ac...

You just have to combine receiving and sending, like in this simple example based on example_spp_acceptor_demo.c /* This example code is in the Public Domain (or CC0 licensed, at your option.) Unless required by applicable law or agreed to in writing, this software is distributed on an "AS IS" BASI...

Hi all, I'am working on a esp32 project that uses Bluetooth. Now I'am looking into the Bluetooth classic example using SPP (the "bt_spp_acceptor" as a starting point). This is exactly what I need, so I can use the Bluetooth connection as a serial port. Now the real question: I can connect with any d...

Hi All, I'm running the OTA "simple example" which is based on the esp_http_client library. Now, the documentation says, that if you do not want to verify the host, you can omit the "config.cert_pem" entry. However, when I leave this out like so: esp_http_client_config_t config; config.url = C_ota_u...

I found the issue! The address of the LAN8720 is set to 0 after pulling the reset wire low. However my system works on address 1. This works the first time initially. But when the LAN8720 gets a reset, it changes to 0. THe ESP32 however has hardcoded address 1 in it's source-code. Therefore the rest...