I haven't researched this but maybe the use of the select() sockets call might be what you need. For any given socket, we can ask: 1) Does the socket have some data to read()? 2) Is the socket ready to be written? 3) Is there an exception on the socket? The select system call can be configured to "b...

@kurtzweber, Your question is great and I too keenly await any feedback on it. I had a grunge through the source and it "appears" that we can determine which core we are running on by using the macro: int id = xPortGetCoreID(); This will return either 0 or 1 depending on the currently executing core...

The SPI master driver is now available in the latest ESP-IDF.

For general guidance on manufacturing electronics devices and services/support to get you going on that, I'd suggest a google search of "how to manufacture electronics". I didn't know and when I googled that I found there were lots of great resources out there.

When using the SPI master driver, I need to call spi_bus_add_device() http://esp-idf.readthedocs.io/en/latest/api/spi_master.html#_CPPv218spi_bus_add_device17spi_host_device_tP29spi_device_interface_config_tP19spi_device_handle_t Which takes as input a struct spi_device_interface_config_t http://esp...

The ESP-IDF SDK for ESP32 continues to evolve and make leaps and bounds of progression. In these early days, it is still a moving target while the ESP32 masters determine what works and how to improve what doesn't. In addition, some settings that were previously chosen either no longer apply or have...

While studying the SPI documentation, I am looking at the "spi_transaction_t" data structure. It has a field called "flags" that is documented as "Bitwise OR of SPI_TRANS_* flags". However, I am unable to find any definition of these flags. The documentation I am looking at is: http://esp-idf.readth...

Studying the SPI master driver, I find that we must configure a data structure called "spi_bus_config_t". Reading the documentation on it found here: http://esp-idf.readthedocs.io/en/latest/api/spi_master.html#_CPPv216spi_bus_config_t I find 5 pins need be configured: spid_io_num spiq_io_num spiclk_...

Do you think the documentation should be updated to make this understanding clearer?

I see that we have (as of the date of this post) a new component that provides FatFs file system support. I also note that this appears to provide first class support for micro SD cards. The purpose of this posting is to inquire about support for FatFs mapped onto SPI flash memory. Is that a support...