ESP32 Forum

Hi There
I have a little eval board which didn't come with AT commands and I've tried downloading V1.0, V1.1 and V1.1.1 each with limited success. V1.0 went the furthest, the rest complained there was no code and continually re-booted.

Information on where to put segments is limited so I used the download.config to manually enter the values (and in this order):

0x1000 bootloader/bootloader.bin
0x20000 at_customize.bin
0x21000 customized_partitions/ble_data.bin
0x24000 customized_partitions/server_cert.bin
0x26000 customized_partitions/server_key.bin
0x28000 customized_partitions/server_ca.bin
0xf000 phy_init_data.bin
0x100000 esp-at.bin
0x8000 partitions_at.bin

Although the program seems to have loaded, nothing is happening when I type "AT"

NOTE: There was something before the "2nd stage bootloader" line, but it was at a different baud rate and appeared as garbage (and was deleted)

Any help would be appreciated.

Thanks
Simon

I also sent AT commands in the same way and there was no reply.
AT command required "CR + LF" for line feed code, but I was sending CR only.
After sending "CR + LF" after AT, OK and reply came.

Another attention is necessary.
The port for AT command is UART1 (GPIO16: RxD1, GPIO17: TxD1).
Since it is UART 0 for debugging, AT commands are operated in a separate window.
https://github.com/espressif/esp32-at

I'm glad if you can use it as a reference.
Regards,
Takeuchi