Hi all, There's several crystal types with different ESR and Load Capacitance. What you've provided to us, inside datasheet, is a Frequency range between 2 and 40 Mhz and Frequency Stability of +/-10ppm. I want to ask: - There's also particular requirements about ESR and Load Capacitance? - If I cho...

Hi all, I want to ask if there's particular requirements to choose compatible SPI Flash to replace flash memory that is on module. In particular I want to ask: - Max. supported SPI flash clock (80Mhz is ESP32 top limit or should I choose a faster SPI flash?) - Particular istruction commands that mus...

Hi all, I want to ask what happen if I use a 1.8v (1.7-2.0v) SPI memory with a pull-down on MTDI/GPIO12 strapping pin. From datasheet I've found that 3.3v mode is used with a pull-down, but if I've a 1.8v flash, 3.3v mode starts before or after check user code? Or is memory fried before start user c...

In theory, any OpenOCD-compatible JTAG-debugger (that is not hardwired to be chip-specific; eg some of the STM32 ones are) will do. We have great success with FT2232H-based debuggers; we have one of these chips on board the devboard I used for the NES port and we use Tiao USB-JTAG boards for the re...

Well, I'm interested too. Also, I'd like to have advices from Espressif about which JTAG debugger they used and which is adviced to use (and buy) with less possible pain to setup it.

Hi,

I want to ask if it's possible to change pin functions during program run. I know that I can change after boot, for example, UART to I2C, but it's possible to go back to UART or another peripheral several times?

Howdy. There is absolutely no technical reason at all why Visual Studio (or another development environment) couldn't be used on Windows to build ESP32 applications. The EPS-IDF github package provides recipes for Linux, Windows (and I believe Mac). The choice of a development environment for writi...

I've a question about why Visual Studio from Microsoft is not used with ESP products. Since there's a free version of VS and an (not free) addon for ESP8266 (not arduino addon), why not to make a tutorial or a guide on how to configurate VS to handle and compile IDF? There's a particular software re...

The HW fifo is pretty small; I think it consists of the W registers only for a total of 16*4=64 bytes. In DMA mode, it is used as a transparent buffer to stop DMA slowdowns from interrupting the SPI stream, as well as allowing DMA bursts. From a programmers view, it is entirely transparent, as in y...

Hi, I see that I've 6 pins that are only input, from pin 5 to pin 11. Since I need to set an SPI Peripheral as Slave on ESP32 device, I want to ask if Clock, MOSI and CS can be placed on this Input only pins since I don't need that ESP32 drive them. Also, if I choose this pins as SPI, I still have 8...