/* * This file is part of the libopencm3 project. * * Copyright (C) 2010 Gareth McMullin * * This library is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this library. If not, see . */ #include void eth_smi_write(u8 phy, u8 reg, u16 data) { /* Set PHY and register addresses for write access. */ ETH_MACMIIAR &= ~(ETH_MACMIIAR_MR | ETH_MACMIIAR_PA); ETH_MACMIIAR |= (phy << 11) | (reg << 6) | ETH_MACMIIAR_MW; /* Set register value. */ ETH_MACMIIDR = data; /* Begin transaction. */ ETH_MACMIIAR |= ETH_MACMIIAR_MB; /* Wait for not busy. */ while (ETH_MACMIIAR & ETH_MACMIIAR_MB); } u16 eth_smi_read(u8 phy, u8 reg) { /* Set PHY and register addresses for write access. */ ETH_MACMIIAR &= ~(ETH_MACMIIAR_MR | ETH_MACMIIAR_PA | ETH_MACMIIAR_MW); ETH_MACMIIAR |= (phy << 11) | (reg << 6); /* Begin transaction. */ ETH_MACMIIAR |= ETH_MACMIIAR_MB; /* Wait for not busy. */ while (ETH_MACMIIAR & ETH_MACMIIAR_MB); /* Set register value. */ return (u16)(ETH_MACMIIDR); }