we want to try connect ESP32 with STM32 via UART using the ESP_AT
after flashing the esp32-wroom-32e with esp-at firmware (ESP32-WROOM-32-V2.2.0.0), the output from UART0(USB in dev-ket) is as expected (figure1).
But we couldn't communicate with the ESP32 via UART2, we try to send "AT" & "AT+GMR" with no reply from the esp (figure2).
note that we try that with different UART transceivers (STM32, ARDUINO UNO, FTDI-CHIP)
what could we be doing wrong?
Communication with ESP-AT (ESP32-WROOM-32E)
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Re: Communication with ESP-AT (ESP32-WROOM-32E)
Are you sure you have the line endings correctly? AT requires CR+LF iirc.
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Re: Communication with ESP-AT (ESP32-WROOM-32E)
Hi thanks for the reply, I solved the problem, I'm not sure if that was the problem but when I switch from arduino to a 3v3 ftdi it work
I think the 5v arduino couldn't communicate with esp32 without a voltage translator
I think the 5v arduino couldn't communicate with esp32 without a voltage translator
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