Nitpick for arch docs

PUBLISHED_FROM=b9241ebdb781c3a44b4a81cf24b6f3e8611ade1d

Author: cpq

mos.yml

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+author: mongoose-os
+description: Ethernet support
+type: lib
+version: 1.0
+
+config_schema:
+  - ["eth", "o", {title: "Ethernet settings"}]
+  - ["eth.enable", "b", false, {title: "Enable Ethernet interface"}]
+
+tags:
+  - c
+  - ethernet
+  - hw
+
+skeleton_version: 2017-06-16

mos_esp32.yml

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+sources:
+  - src/esp32
+
+cdefs:
+  # 8720 or 8710 in RMII mode.
+  MGOS_ETH_PHY_LAN87x0: 1
+
+config_schema:
+  - ["eth.phy_addr", "i", 0, {title: "RMII PHY address"}]
+  - ["eth.mdc_gpio", "i", 23, {title: "GPIO to use for RMII MDC signal"}]
+  - ["eth.mdio_gpio", "i", 18, {title: "GPIO to use for RMII MDIO signal"}]

src/esp32/esp32_eth.c

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+/*
+ * Copyright (c) 2014-2017 Cesanta Software Limited
+ * All rights reserved
+ */
+
+#include <stdbool.h>
+
+#include "esp_eth.h"
+#include "eth_phy/phy_lan8720.h"
+#include "eth_phy/phy_tlk110.h"
+#include "tcpip_adapter.h"
+
+#include "fw/src/mgos_net.h"
+#include "fw/src/mgos_net_hal.h"
+#include "fw/src/mgos_sys_config.h"
+
+static void eth_config_pins(void) {
+  phy_rmii_configure_data_interface_pins();
+  phy_rmii_smi_configure_pins(get_cfg()->eth.mdc_gpio,
+                              get_cfg()->eth.mdio_gpio);
+}
+
+bool mgos_ethernet_init(void) {
+  struct sys_config_eth *ecfg = &get_cfg()->eth;
+  if (!ecfg->enable) return true;
+
+  eth_config_t config;
+  const char *phy_model;
+#if defined(MGOS_ETH_PHY_LAN87x0)
+  phy_model = "LAN87x0";
+  config = phy_lan8720_default_ethernet_config;
+#elif defined(MGOS_ETH_PHY_TLK110)
+  phy_model = "TLK110";
+  config = phy_tlk110_default_ethernet_config;
+#else
+#error Unknown/unspecified PHY model
+#endif
+
+  /* Set the PHY address in the example configuration */
+  config.phy_addr = ecfg->phy_addr;
+  config.gpio_config = eth_config_pins;
+  config.tcpip_input = tcpip_adapter_eth_input;
+
+  LOG(LL_INFO, ("Eth init: %s PHY @ %d", phy_model, ecfg->phy_addr));
+  esp_err_t ret = esp_eth_init(&config);
+  if (ret == ESP_OK) {
+    esp_eth_enable();
+  } else {
+    LOG(LL_ERROR, ("Ethernet init failed: %d", ret));
+    return false;
+  }
+
+  return true;
+}
+
+bool mgos_eth_dev_get_ip_info(int if_instance,
+                              struct mgos_net_ip_info *ip_info) {
+  tcpip_adapter_ip_info_t info;
+  if (if_instance != 0 ||
+      tcpip_adapter_get_ip_info(TCPIP_ADAPTER_IF_ETH, &info) != ESP_OK ||
+      info.ip.addr == 0) {
+    return false;
+  }
+  ip_info->ip.sin_addr.s_addr = info.ip.addr;
+  ip_info->netmask.sin_addr.s_addr = info.netmask.addr;
+  ip_info->gw.sin_addr.s_addr = info.gw.addr;
+  return true;
+}