43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2012 chrysn <chrysn@fsfe.org>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <libopencm3/efm32/tinygecko/gpio.h>
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void gpio_set_mode(u32 gpioport, u8 mode, u16 gpios)
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{
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u8 i;
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u32 modemaskl = 0, modesetl = 0, modemaskh = 0, modeseth = 0;
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for (i = 0; i < 8; ++i)
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{
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if (gpios & (1<<i)) {
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modemaskl |= GPIO_MODE_MASK << (i*4);
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modesetl |= mode << (i*4);
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}
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if (gpios & (0x100<<i)) {
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modemaskh |= GPIO_MODE_MASK << (i*4);
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modeseth |= mode << (i*4);
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}
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}
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GPIO_Px_MODEL(gpioport) &= ~modemaskl;
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GPIO_Px_MODEL(gpioport) |= modesetl;
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GPIO_Px_MODEH(gpioport) &= ~modemaskh;
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GPIO_Px_MODEH(gpioport) |= modeseth;
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}
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