43 lines
2.2 KiB
C
43 lines
2.2 KiB
C
#ifndef WLED_ETHERNET_H
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#define WLED_ETHERNET_H
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#ifdef WLED_USE_ETHERNET
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#include "pin_manager.h"
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// The following six pins are neither configurable nor
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// can they be re-assigned through IOMUX / GPIO matrix.
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// See https://docs.espressif.com/projects/esp-idf/en/latest/esp32/hw-reference/esp32/get-started-ethernet-kit-v1.1.html#ip101gri-phy-interface
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const managed_pin_type esp32_nonconfigurable_ethernet_pins[6] = {
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{ 21, true }, // RMII EMAC TX EN == When high, clocks the data on TXD0 and TXD1 to transmitter
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{ 19, true }, // RMII EMAC TXD0 == First bit of transmitted data
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{ 22, true }, // RMII EMAC TXD1 == Second bit of transmitted data
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{ 25, false }, // RMII EMAC RXD0 == First bit of received data
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{ 26, false }, // RMII EMAC RXD1 == Second bit of received data
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{ 27, true }, // RMII EMAC CRS_DV == Carrier Sense and RX Data Valid
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};
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// For ESP32, the remaining five pins are at least somewhat configurable.
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// eth_address is in range [0..31], indicates which PHY (MAC?) address should be allocated to the interface
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// eth_power is an output GPIO pin used to enable/disable the ethernet port (and/or external oscillator)
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// eth_mdc is an output GPIO pin used to provide the clock for the management data
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// eth_mdio is an input/output GPIO pin used to transfer management data
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// eth_type is the physical ethernet module's type (ETH_PHY_LAN8720, ETH_PHY_TLK110)
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// eth_clk_mode defines the GPIO pin and GPIO mode for the clock signal
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// However, there are really only four configurable options on ESP32:
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// ETH_CLOCK_GPIO0_IN == External oscillator, clock input via GPIO0
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// ETH_CLOCK_GPIO0_OUT == ESP32 provides 50MHz clock output via GPIO0
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// ETH_CLOCK_GPIO16_OUT == ESP32 provides 50MHz clock output via GPIO16
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// ETH_CLOCK_GPIO17_OUT == ESP32 provides 50MHz clock output via GPIO17
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typedef struct EthernetSettings {
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uint8_t eth_address;
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int eth_power;
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int eth_mdc;
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int eth_mdio;
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eth_phy_type_t eth_type;
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eth_clock_mode_t eth_clk_mode;
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} ethernet_settings;
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extern ethernet_settings ethernetBoards[];
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#endif
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#endif |