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