Hi! Any update? Is it possible to use ESP32 HCI with just 1 UART?

Hi! Is it possible to use ESP-AT with only 1 UART connection? For example, we will flash the ESP32-U4WDH with the UART0, and then use this UART to send AT commands. When we want to upgrade ESP32 firmware, we can use BOOT pins to force it into bootloader and then flash it with UART0. We need a soluti...

I confirm that pulling down GPIO15 stops the bootloader from sending logs to UART0 (GPIO 1 & 3).

And the most important question is: Is it enough to only have 1 UART connected to ESP32 on the PCB? I want to use this UART for 1. flashing new firmware (FW upgrade) 2. Bluetooth HCI over UART I'm thinking that maybe with some reset pin it's possible to ask the ESP32 to enter bootloader and then sen...

All numbers I have posted are GPIO numbers, according to https://docs.espressif.com/projects/esp-idf/en/latest/esp32/hw-reference/esp32/get-started-pico-kit.html#pin-descriptions - UART1 (HCI Bluetooth) -> I want to change to GPIO 1, 3, 22, 19 - UART0 -> I want to change to whatever other GPIO, e.g....

Any update?

Example uart_async_rxtxtasks from IDF v4.2 works fine, I can send and receive data over UART, on pins 5 and 18. It's only uart_echo that crashes,

I have built and flashed example uart_echo to the ESP32-PICO-D4 (ESP32-PICO-KIT). Without any changes to code from ESP-IDF v4.2, it crashes in function uart_set_pin(). Guru Meditation Error: Core 0 panic'ed (StoreProhibited). Exception was unhandled. To reproduce: cd ~/esp/esp-idf/examples/periphera...

Basically I want to achieve a minimal working configuration with HCI on UART0 pins.

Hi ESP_Sprite! I want to use the pins normally connected to UART0 and to USB-UART bridge CP2102. Is this possible? This would mean I want to have:
- HCI Bluetooth -> change UART1 to pins 1, 3, 22, 19
- UART0 -> change to whatever other pins