I like this idea, simple but useful.

As long as the tools for the platform supports C++, that is my choice. Like the article @loboris linked, C++ can do anything C can (with a few syntactical differences) so imho, there is no good reason to limit yourself to C. A word of caution: The C++ thread support in the Xtensa-port used to compil...

Oh, misunderstanding on my part then. Thanks!

gpio_set_direction, with gpio_mode_output. Is there somerjing else that I need todo to unmap the JTAG interface?

Hi, GPIO15 - is there something special with that one that would prevent it from being pulled low? I can't see anything in the datasheet about it? I'm not using the pin for something else than as an output, configured using GPIO_MODE_OUTPUT and it is only my scope connected to it. I'm using a Sparkf...

Packets between ESP32 and Unifi AP? I'm sorry, but I do not have any such listening devices that lets be sniff the wireless communication. Can a second ESP32 be used for such a thing, if so, how? If you actually mean the packets at the receiving end (mosquitto container) then that is what I've shown...

Hm, interesting how a monolog with yourself can make you see things that you've missed previosuly. So it seems that I had switched the value of a NACK (had it to 0) and switching it to 1 freed up the bus, but the real problem was me misunderstanding the usage of i2c_master_read(). It seems you must ...

Hi, I've been reading values from a BME280 continuously for the last week over I2C without any glitches, but yesterday when I wanted to implement the MCP23017 I/O expander I discovered an error in my code that prevented it from ever calling i2c_master_stop() at the end of the command sequence. So, I...

The documentation for gpio_input_get & gpio_input_get_high gives the impression that they return a 32-bit value corresponding to the current input levels of the GPIO. However, when I tried these functions I got only garbage and had to fall back to gpio_get_level() which works as expected. What is th...

Re. GPIO modes: GPIO_MODE_INPUT - high impedance input GPIO_MODE_OUTPUT - sources, i.e. active high. GPIO_MODE_OUTPUT_OD - open drain, i.e active low. But what about these two, is there a schematic that lets me see how they actually function in bi-directional mode? GPIO_MODE_INPUT_OUTPUT_OD GPIO_MOD...