AT command is not working

[bmc@bc.dk]

Hi,

I downloaded the ESP32-PICO-D4-V2.4.0.0 and flashed it to the ESP32-PICO

The flashing worked and I can se the startup on the log port.
I connect the other serial port on 19 and 22 and after the reset of the ESP32-PICO i get the message 'ready' on the console output of the AT serial port. I try to send AT adding cr and lf but I do not get any response. The speed is correct since I receive the 'ready' message. I do not have any flow control in the terminal program since this is not nessecary according to your document.

Is the provided bin file incorrect or what is wrong ?

Best regards

[ESP_Sun]

Hi,

I downloaded the ESP32-PICO-D4-V2.4.0.0 and flashed it to the ESP32-PICO

The flashing worked and I can se the startup on the log port.
I connect the other serial port on 19 and 22 and after the reset of the ESP32-PICO i get the message 'ready' on the console output of the AT serial port. I try to send AT adding cr and lf but I do not get any response. The speed is correct since I receive the 'ready' message. I do not have any flow control in the terminal program since this is not nessecary according to your document.

Is the provided bin file incorrect or what is wrong ?

Best regards

Hi,
Receiving 'ready' can only prove that tx (GPIO22) is normal. You can check the connection of rx (GPIO19) again. The PICO AT v2.4 firmware communication I tested is normal. The hardware uses ESP32-PICO-KIT_V4. The detailed connection and log are shown in the following figure:

企业微信截图_16727160978574.png (23.52 KiB) Viewed 2302 times

b131d0c9d269a934f03708977245fdc3.jpg (439.36 KiB) Viewed 2302 times

36b162840af91c97c5106145ab942870.jpg (222.29 KiB) Viewed 2302 times

Released Firmware: https://docs.espressif.com/projects/esp ... aries.html