LAN8720 Can't work on esp32 with ETH_CLOCK_GPIO17_OUT
I read the source code from network_lan.c from ports/esp32
in line 143
eth_mac_config_t mac_config = ETH_MAC_DEFAULT_CONFIG();
mac_config.smi_mdc_gpio_num = self->mdc_pin;
mac_config.smi_mdio_gpio_num = self->mdio_pin;
esp_eth_mac_t *mac = esp_eth_mac_new_esp32(&mac_config);
it use default config but many boards' lan8720 are setted with other clock
like my board is GPIO17
In Arduino the code is write like this(https://github.com/espressif/arduino-esp32/blob/ba6e82c30d31a2ddc1276a045e0c42a29b38869f/libraries/Ethernet/src/ETH.cpp Line:257)
eth_mac_config_t mac_config = ETH_MAC_DEFAULT_CONFIG();
mac_config.clock_config.rmii.clock_mode = (eth_clock_mode) ? EMAC_CLK_OUT : EMAC_CLK_EXT_IN;
mac_config.clock_config.rmii.clock_gpio = (1 == eth_clock_mode) ? EMAC_APPL_CLK_OUT_GPIO : (2 == eth_clock_mode) ? EMAC_CLK_OUT_GPIO : (3 == eth_clock_mode) ? EMAC_CLK_OUT_180_GPIO : EMAC_CLK_IN_GPIO;
mac_config.smi_mdc_gpio_num = mdc;
mac_config.smi_mdio_gpio_num = mdio;
mac_config.sw_reset_timeout_ms = 1000;
eth_mac = esp_eth_mac_new_esp32(&mac_config);
It enabled clock config with {gpio0:EMAC_TX_CLK,gpio0:CLK_OUT1,gpio16:EMAC_CLK_OUT,gpio17:EMAC_CLK_180}
without clock set lan8720 return OSError: esp_eth_driver_install failed,which can't work
Could micropython support clock config ? It really help a lot.Thanks
my mpy code is below:
import network
nic = network.LAN(0,mdc= Pin(23),mdio=Pin(18),
phy_addr=0,phy_type=network.PHY_LAN8720
)
'''
#define ETH_ADDR 0
#define ETH_POWER_PIN -1
#define ETH_MDC_PIN 23
#define ETH_MDIO_PIN 18
#define LED 2
#define ETH_TYPE ETH_PHY_LAN8720
#define ETH_CLK_MODE ETH_CLOCK_GPIO17_OUT
#define ETH_RESET 5
'''
esp32: Support dynamic configuration of ETH ref-clk mode and pin.
Consisting of three commits:
- Add the PHY_LAN8710 name. the LAN8710 shares the code with the LAN8720.
- Implement the keyword options ref_clk_mode and ref_clk_pin to set the mode and Pin.
- Add a few words of documentation, picking up #7356, which was never merged, albeit considered as appropriate.
If ref_clk_mode is not set, the default settings e.g. taken from the board's config file are used. Setting ref_clk_mode and ref_clk_pin requires at least esp-idf v4.4. It builds with
Tested with the Olimex esp32_POE and Olimex ESP32 POE ISO boards.