From 1dc7d758f96dd2b9bd7b03f01ca032d68b696cf0 Mon Sep 17 00:00:00 2001 From: root Date: Sun, 2 Nov 2014 10:14:39 +0000 Subject: fish --- libopencm3/lib/stm32/f1/ethernet.c | 52 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 libopencm3/lib/stm32/f1/ethernet.c (limited to 'libopencm3/lib/stm32/f1/ethernet.c') diff --git a/libopencm3/lib/stm32/f1/ethernet.c b/libopencm3/lib/stm32/f1/ethernet.c new file mode 100644 index 0000000..8b65780 --- /dev/null +++ b/libopencm3/lib/stm32/f1/ethernet.c @@ -0,0 +1,52 @@ +/* + * 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(uint8_t phy, uint8_t reg, uint16_t 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); +} + +uint16_t eth_smi_read(uint8_t phy, uint8_t 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 (uint16_t)(ETH_MACMIIDR); +} -- cgit v1.2.3