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acadc4bc28
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@1955 ebee16cc-31ac-478f-84a7-5cbb03baadba
183 lines
4.9 KiB
C
183 lines
4.9 KiB
C
/**
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******************************************************************************
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*
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* @file gpio_in.c
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* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
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* @brief GPIO input functions
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* @see The GNU Public License (GPL) Version 3
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*
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*****************************************************************************/
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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 3 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, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* *****************************************************************
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// Example pin definitions .. this would go into your pios_board.h file
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// GPIO_Mode_AIN Analog Input
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// GPIO_Mode_IN_FLOATING Input Floating
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// GPIO_Mode_IPD Input Pull-Down
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// GPIO_Mode_IPU Input Pull-up
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// API mode line
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#define GPIO_IN_0_PORT GPIOB
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#define GPIO_IN_0_PIN GPIO_Pin_13
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#define GPIO_IN_0_MODE GPIO_Mode_IPU
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// Serial port CTS line
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#define GPIO_IN_1_PORT GPIOB
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#define GPIO_IN_1_PIN GPIO_Pin_14
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#define GPIO_IN_1_MODE GPIO_Mode_IPU
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#define GPIO_IN_NUM 2
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#define GPIO_IN_PORTS { GPIO_IN_0_PORT, GPIO_IN_1_PORT }
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#define GPIO_IN_PINS { GPIO_IN_0_PIN, GPIO_IN_1_PIN }
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#define GPIO_IN_MODES { GPIO_IN_0_MODE, GPIO_IN_1_MODE }
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#define API_MODE_PIN 0
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#define SERIAL_CTS_PIN 1
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*********************************************************************
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Example usage ..
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{
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// setup all the GPIO input pins
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GPIO_IN_Init();
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if (!GPIO_IN(API_MODE_PIN))
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{ // pin is LOW
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}
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else
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{ // pin is HIGH
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}
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}
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***************************************************************************** */
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#include <pios.h>
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#include "gpio_in.h"
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// *****************************************************************************
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// setup the GPIO input pins
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// PORT ..
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// GPIOA
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// GPIOB
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// GPIOC
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// GPIOD
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// GPIOE
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// GPIOF
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// GPIOG
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// PIN ..
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// GPIO_Pin_0
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// GPIO_Pin_1
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// GPIO_Pin_2
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// GPIO_Pin_3
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// GPIO_Pin_4
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// GPIO_Pin_5
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// GPIO_Pin_6
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// GPIO_Pin_7
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// GPIO_Pin_8
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// GPIO_Pin_9
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// GPIO_Pin_10
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// GPIO_Pin_11
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// GPIO_Pin_12
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// GPIO_Pin_13
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// GPIO_Pin_14
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// GPIO_Pin_15
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// MODE ..
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// GPIO_Mode_AIN Analog Input
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// GPIO_Mode_IN_FLOATING Input Floating
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// GPIO_Mode_IPD Input Pull-Down
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// GPIO_Mode_IPU Input Pull-up
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#if defined(GPIO_IN_NUM) && defined(GPIO_IN_PORTS) && defined(GPIO_IN_PINS) && defined(GPIO_IN_MODES)
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// #if defined(PIOS_INCLUDE_GPIO_IN) && defined(PIOS_GPIO_IN_NUM) && defined(PIOS_GPIO_IN_PORTS) && defined(PIOS_GPIO_IN_PINS) && defined(PIOS_GPIO_IN_MODES)
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// Local Variables
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static GPIO_TypeDef *GPIO_IN_PORT[GPIO_IN_NUM] = GPIO_IN_PORTS;
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static const uint32_t GPIO_IN_PIN[GPIO_IN_NUM] = GPIO_IN_PINS;
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static const uint32_t GPIO_IN_MODE[GPIO_IN_NUM] = GPIO_IN_MODES;
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/**
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* Initialises all the GPIO INPUT's
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*/
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void GPIO_IN_Init(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
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for (int i = 0; i < GPIO_IN_NUM; i++)
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{
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switch ((uint32_t)GPIO_IN_PORT[i])
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{
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case (uint32_t)GPIOA: RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); break;
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case (uint32_t)GPIOB: RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); break;
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case (uint32_t)GPIOC: RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE); break;
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case (uint32_t)GPIOD: RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE); break;
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case (uint32_t)GPIOE: RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE, ENABLE); break;
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case (uint32_t)GPIOF: RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOF, ENABLE); break;
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case (uint32_t)GPIOG: RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOG, ENABLE); break;
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}
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GPIO_InitStructure.GPIO_Pin = GPIO_IN_PIN[i];
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GPIO_InitStructure.GPIO_Mode = GPIO_IN_MODE[i];
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GPIO_Init(GPIO_IN_PORT[i], &GPIO_InitStructure);
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}
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}
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/**
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* Read input pin level
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* \param[num] Pin Pin Number
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*/
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bool GPIO_IN(uint8_t num)
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{ // return ..
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// FALSE if the input pin is LOW
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// TRUE if the input pin is HIGH
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if (num >= GPIO_IN_NUM) return FALSE;
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return ((GPIO_IN_PORT[num]->IDR & GPIO_IN_PIN[num]) != 0);
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}
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#endif
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// ***********************************************************************************
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/**
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* @}
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* @}
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*/
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