66 lines
2.3 KiB
C
66 lines
2.3 KiB
C
/*
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* This file is part of the libopenstm32 project.
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*
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* Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef LIBOPENSTM32_GPIO_H
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#define LIBOPENSTM32_GPIO_H
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#include "libopenstm32.h"
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/* GPIO port base addresses */
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#define GPIO_BASE_A (PERIPH_BASE_APB2 + 0x0800)
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#define GPIO_BASE_B (PERIPH_BASE_APB2 + 0x0c00)
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#define GPIO_BASE_C (PERIPH_BASE_APB2 + 0x1000)
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#define GPIO_BASE_D (PERIPH_BASE_APB2 + 0x1400)
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#define GPIO_BASE_E (PERIPH_BASE_APB2 + 0x1800)
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#define GPIO_BASE_F (PERIPH_BASE_APB2 + 0x1c00)
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#define GPIO_BASE_G (PERIPH_BASE_APB2 + 0x2000)
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/* Register offsets */
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#define GPIO_CTRL_LO 0x00 /* 32 bit */
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#define GPIO_CTRL_HI 0x04 /* 32 bit */
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#define GPIO_INPUT_DATA 0x08 /* 32 bit, only 15:0 used */
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#define GPIO_OUTPUT_DATA 0x0c /* 32 bit, only 15:0 used */
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#define GPIO_BIT_SET_RESET 0x10 /* 32 bit */
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#define GPIO_BIT_RESET 0x14 /* 16 bit */
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#define GPIO_LOCK 0x18 /* 32 bit */
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/* Output mode (MODE[1:0]) values */
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#define GPIO_MODE_INPUT 0x00 /* Default */
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#define GPIO_MODE_OUTPUT_10_MHZ 0x01
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#define GPIO_MODE_OUTPUT_2_MHZ 0x02
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#define GPIO_MODE_OUTPUT_50_MHZ 0x03
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/* CNF[1:0] values when MODE[1:0] is 00 (input mode). */
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#define GPIO_CNF_INPUT_ANALOG 0x00
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#define GPIO_CNF_INPUT_FLOAT 0x01 /* Default */
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#define GPIO_CNF_INPUT_PULL_UPDOWN 0x02
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/* CNF[1:0] values when MODE[1:0] is != 00 (one of the output modes). */
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#define GPIO_CNF_OUTPUT_PUSHPULL 0x00
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#define GPIO_CNF_OUTPUT_OPENDRAIN 0x01
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#define GPIO_CNF_OUTPUT_ALTFN_PUSHPULL 0x02
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#define GPIO_CNF_OUTPUT_ALTFN_OPENDRAIN 0x03
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void gpio_set(unsigned int gpio);
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void gpio_clear(unsigned int gpio);
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void gpio_toggle(unsigned int gpio);
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#endif
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