ESP-AT LAN8710A Error

[wojlej]

Hello,

I am trying run AT-commands firmware for my ESP32-WROOM-32U with eth LAN8710A chip.
In the attachment I am sending the connection diagram:

esp32_eth.pdf

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I reconfigured the UART for AT commands to pins compatible with the schematic. AT communication works. I configured the RMII interface with an external clock on pin 17. In the attachment (zip) I am sending the sdconfig and binaries. I am using newest version of idf.py.
This is segment of eth config:

Code: [Select all] [Expand/Collapse]

1. #
2. # Ethernet
3. #
4. CONFIG_ETH_ENABLED=y
5. CONFIG_ETH_USE_ESP32_EMAC=y
6. CONFIG_ETH_PHY_INTERFACE_RMII=y
7. # CONFIG_ETH_PHY_INTERFACE_MII is not set
8. # CONFIG_ETH_RMII_CLK_INPUT is not set
9. CONFIG_ETH_RMII_CLK_OUTPUT=y
10. # CONFIG_ETH_RMII_CLK_OUTPUT_GPIO0 is not set
11. CONFIG_ETH_RMII_CLK_OUT_GPIO=17
12. CONFIG_ETH_DMA_BUFFER_SIZE=512
13. CONFIG_ETH_DMA_RX_BUFFER_NUM=10
14. CONFIG_ETH_DMA_TX_BUFFER_NUM=10
15. # CONFIG_ETH_USE_SPI_ETHERNET is not set
16. # CONFIG_ETH_USE_OPENETH is not set
17. # end of Ethernet

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When i send command: AT+CIPETHMAC? i receive ERROR msg. Other commands: AT, AT+DRVPWMINIT etc works.
Please, tell me what i shoud change in sdkonfig file.

[ESP_Sun]

Hi,
ESP32 AT supports to four Ethernet PHY: LAN8720, IP101, DP83848 and RTL8201.

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You can first test according to the IDF demo to see if PHY LAN8710 is supported. If it works, you can test AT again.
IDF ethernet dome: https://github.com/espressif/esp-idf/tr ... s/ethernet

[ESP_ondrej]

I would start with confirming that Ethernet works on your board. I would try to flash it with \ethernet\basic example and try to ping it. I briefly checked your schematics and the pull-ups on RXD0/1 look suspicious to me. Does this comes from some reference design?