I'd like to use Bluetooth to interface with some HID devices. Apparently, I first have to pair with them using specially calculated pin. After this is done, normal HID interaction can be performed. I'm confused as how can I do this in ESP-IDF? I've read all seemingly relevant Bluetooth Classic docum...

I'm currently digging into Bluetooth stack of ESP32 and have stumped upon one weird thing: esp_bt_gap_register_callback specifically rejects NULL callback, in turn making it impossible to disable callback completely. Here's esp_bt_gap_register_callback: esp_err_t esp_bt_gap_register_callback(esp_bt_...

Any updates on this? Sounds like a neat thing to try out!

Well, problem lies outside of SPI: in DC line. Turned out that I have to flush data before every DC change.

Everything is working fine now . If somebody is wondering, you can find working code in https://github.com/v1993/u8g2/blob/mast ... /U8x8lib.c.

Here's my problematic code: static const spi_host_device_t u8x8_spibuses[2] = {HSPI_HOST, VSPI_HOST}; static uint8_t u8x8_byte_espidf_hw_spi_universal(u8x8_t* u8x8, uint8_t msg, uint8_t arg_int, void* arg_ptr, uint8_t host) // It can work with any of two SPIs { u8x8_device_info* info = u8x8->user_pt...

I'm trying to port u8g2 library to ESP-32 while keeping interface the same. Current part is SPI driver. I form a buffer from incoming bytes, then send it using DMA but something seems off and display show some messed up picture (but it is still possible to say that there is one). I'm actually lost w...

Ok, got it by myself :D. Solution: add target_compile_options(${COMPONENT_TARGET} PUBLIC -DYOUR_LOVELY_DEFINITIONS) somwhere after register_component() in your component's CMakeLists.txt. Hope that it will help somebody! P.S.: it is probably also a good idea to warp it into fuction like "project_com...

Hello. I want to add some preprocessor flags to both my sources and other project components.

For make I create with
How can I do that with CMake?

Problem is solved by using another SD card. That one seems faulty…

New results: 0x107 on both 5v and 3v.