##// END OF EJS Templates
HG_REPOSITORIES » LPP » INSTRUMENTATION » libuc2
RSS

Clone from http://pc-instru.lpp.polytechnique.fr:5000/libuc2

Removed error on fat32 library, seems now to be able navigate among sectors in...
Removed error on fat32 library, seems now to be able navigate among sectors in both directions. Improved SDLCD drawing performances by almost 1000x.
Jeandet Alexis - - Load All Authors

File last commit:

r64:b702edc52366 dev_alexis
r68:104125d87b89 dev_alexis
Show More
gpio.c
392 lines | 8.7 KiB | text/x-c | CLexer
/ lib / src / stm32f4 / GPIO / gpio.c
History | Annotation | Raw |Copy content |Copy permalink
/*------------------------------------------------------------------------------
-- This file is a part of the libuc, microcontroler library
-- Copyright (C) 2012, Alexis Jeandet
--
-- 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 3 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-------------------------------------------------------------------------------
-- Author : Alexis Jeandet
-- Mail : alexis.jeandet@member.fsf.org
-------------------------------------------------------------------------------*/
#include <gpio.h>
#include <stm32f4xx_gpio.h>
#include <stm32f4xx_rcc.h>
#define GPIOGETPORT(gpio) ((GPIO_TypeDef*)(((((uint32_t)gpio) & (uint32_t)0x0000FF00)*(uint32_t)4) + (uint32_t)GPIOA))
#define GPIOPORTNUM(gpio) (((uint32_t)(gpio) & (uint32_t)0x0000FF00)>>(uint32_t)8)
gpio_t gpioopen(uint32_t gpio)
{
gpio &= -1^GPIOSPEEDMASK;
gpio |= gpiolowspeed;
gpio &= -1^GPIODIRMASK;
gpio |= gpioindir;
gpio &= -1^GPIOOUTTYPEMASK;
gpio |= gpiopushpulltype;
gpio &= -1^GPIOPULLTYPEMASK;
gpio |= gpionopulltype;
gpiosetconfig(&gpio);
RCC_AHB1PeriphClockCmd(((uint32_t)0x00000001<<GPIOPORTNUM(gpio)), ENABLE);
return gpio;
}
void gpioclose(gpio_t gpio)
{
}
void gpiosetconfig(gpio_t* gpio)
{
gpiosetdir(gpio, (*gpio & GPIODIRMASK));
gpiosetspeed(gpio, (*gpio & GPIOSPEEDMASK));
gpiosetouttype(gpio, (*gpio & GPIOOUTTYPEMASK));
gpiosetpulltype(gpio, (*gpio & GPIOPULLTYPEMASK));
}
extern void gpiosetspeed(gpio_t* gpio,gpiospeed_t speed)
{
GPIO_TypeDef* GPIOx = GPIOGETPORT((*gpio));
switch(speed)
{
case gpiolowspeed :
if((*gpio & 0xFF)==0xFF)
{
for(int i=0;i<16;i++)
{
GPIOx->OSPEEDR &= ~(GPIO_OSPEEDER_OSPEEDR0 << (i * 2));
GPIOx->OSPEEDR |= ((uint32_t)(GPIO_Speed_2MHz) << (i * 2));
}
}
else
{
GPIOx->OSPEEDR &= ~(GPIO_OSPEEDER_OSPEEDR0 << ((*gpio & 0xFF) * 2));
GPIOx->OSPEEDR |= ((uint32_t)(GPIO_Speed_2MHz) << ((*gpio & 0xFF) * 2));
}
*gpio &= ~GPIOSPEEDMASK;
*gpio |= gpiolowspeed;
break;
case gpiomediumspeed :
if((*gpio & 0xFF)==0xFF)
{
for(int i=0;i<16;i++)
{
GPIOx->OSPEEDR &= ~(GPIO_OSPEEDER_OSPEEDR0 << (i * 2));
GPIOx->OSPEEDR |= ((uint32_t)(GPIO_Speed_25MHz) << (i * 2));
}
}
else
{
GPIOx->OSPEEDR &= ~(GPIO_OSPEEDER_OSPEEDR0 << ((*gpio & 0xFF) * 2));
GPIOx->OSPEEDR |= ((uint32_t)(GPIO_Speed_25MHz) << ((*gpio & 0xFF) * 2));
}
*gpio &= ~GPIOSPEEDMASK;
*gpio |= gpiomediumspeed;
break;
case gpiofastspeed :
if((*gpio & 0xFF)==0xFF)
{
for(int i=0;i<16;i++)
{
GPIOx->OSPEEDR &= ~(GPIO_OSPEEDER_OSPEEDR0 << (i * 2));
GPIOx->OSPEEDR |= ((uint32_t)(GPIO_Speed_50MHz) << (i * 2));
}
}
else
{
GPIOx->OSPEEDR &= ~(GPIO_OSPEEDER_OSPEEDR0 << ((*gpio & 0xFF) * 2));
GPIOx->OSPEEDR |= ((uint32_t)(GPIO_Speed_50MHz) << ((*gpio & 0xFF) * 2));
}
*gpio &= ~GPIOSPEEDMASK;
*gpio |= gpiofastspeed;
break;
case gpiohighspeed :
if((*gpio & 0xFF)==0xFF)
{
for(int i=0;i<16;i++)
{
GPIOx->OSPEEDR &= ~(GPIO_OSPEEDER_OSPEEDR0 << (i * 2));
GPIOx->OSPEEDR |= ((uint32_t)(GPIO_Speed_100MHz) << (i * 2));
}
}
else
{
GPIOx->OSPEEDR &= ~(GPIO_OSPEEDER_OSPEEDR0 << ((*gpio & 0xFF) * 2));
GPIOx->OSPEEDR |= ((uint32_t)(GPIO_Speed_100MHz) << ((*gpio & 0xFF) * 2));
}
*gpio &= ~GPIOSPEEDMASK;
*gpio |= gpiohighspeed;
break;
}
}
void gpiosetdir(gpio_t* gpio,gpiodir_t dir)
{
GPIO_TypeDef* GPIOx = GPIOGETPORT((*gpio));
switch(dir)
{
case gpiooutdir:
if((*gpio & 0xFF)==0xFF)
{
for(int i=0;i<16;i++)
{
GPIOx->MODER &= ~(GPIO_MODER_MODER0 << (i * 2));
GPIOx->MODER |= (GPIO_Mode_OUT << (i * 2));
}
}
else
{
GPIOx->MODER &= ~(GPIO_MODER_MODER0 << ((*gpio & 0xFF) * 2));
GPIOx->MODER |= (GPIO_Mode_OUT << ((*gpio & 0xFF) * 2));
}
*gpio &= ~GPIODIRMASK;
*gpio |= gpiooutdir;
break;
case gpioaf:
if((*gpio & 0xFF)==0xFF)
{
for(int i=0;i<16;i++)
{
GPIOx->MODER &= ~(GPIO_MODER_MODER0 << (i * 2));
GPIOx->MODER |= (GPIO_Mode_AF << (i * 2));
}
}
else
{
GPIOx->MODER &= ~(GPIO_MODER_MODER0 << ((*gpio & 0xFF) * 2));
GPIOx->MODER |= (GPIO_Mode_AF << ((*gpio & 0xFF) * 2));
}
*gpio &= ~GPIODIRMASK;
*gpio |= gpioaf;
break;
case gpioan:
if((*gpio & 0xFF)==0xFF)
{
for(int i=0;i<16;i++)
{
GPIOx->MODER &= ~(GPIO_MODER_MODER0 << (i * 2));
GPIOx->MODER |= (GPIO_Mode_AN << (i * 2));
}
}
else
{
GPIOx->MODER &= ~(GPIO_MODER_MODER0 << ((*gpio & 0xFF) * 2));
GPIOx->MODER |= (GPIO_Mode_AN << ((*gpio & 0xFF) * 2));
}
*gpio &= ~GPIODIRMASK;
*gpio |= gpioan;
break;
default :
if((*gpio & 0xFF)==0xFF)
{
for(int i=0;i<16;i++)
{
GPIOx->MODER &= ~(GPIO_MODER_MODER0 << (i * 2));
GPIOx->MODER |= (GPIO_Mode_IN << (i * 2));
}
}
else
{
GPIOx->MODER &= ~(GPIO_MODER_MODER0 << ((*gpio & 0xFF) * 2));
GPIOx->MODER |= (GPIO_Mode_IN << ((*gpio & 0xFF) * 2));
}
*gpio &= ~GPIODIRMASK;
*gpio |= gpioindir;
break;
}
}
void gpiosetouttype(gpio_t* gpio, gpioouttype_t outtype)
{
GPIO_TypeDef* GPIOx = GPIOGETPORT((*gpio));
if(outtype == gpioopendraintype)
{
if((*gpio & 0xFF)==0xFF)
{
for(int i=0;i<16;i++)
{
GPIOx->OTYPER &= ~((GPIO_OTYPER_OT_0) << ((uint16_t)i));
GPIOx->OTYPER |= (uint16_t)(GPIO_OType_OD<<((uint16_t)i));
}
}
else
{
GPIOx->OTYPER &= ~((GPIO_OTYPER_OT_0) << ((uint16_t)(*gpio & 0xFF)));
GPIOx->OTYPER |= (uint16_t)(GPIO_OType_OD<<((uint16_t)(*gpio & 0xFF)));
}
*gpio &= ~GPIOOUTTYPEMASK;
*gpio |= gpioopendraintype;
}
else
{
if((*gpio & 0xFF)==0xFF)
{
for(int i=0;i<16;i++)
{
GPIOx->OTYPER &= ~((GPIO_OTYPER_OT_0) << ((uint16_t)i));
GPIOx->OTYPER |= (uint16_t)(GPIO_OType_PP<<((uint16_t)i));
}
}
else
{
GPIOx->OTYPER &= ~((GPIO_OTYPER_OT_0) << ((uint16_t)(*gpio & 0xFF)));
GPIOx->OTYPER |= (uint16_t)(GPIO_OType_PP<<((uint16_t)(*gpio & 0xFF)));
}
*gpio &= ~GPIOOUTTYPEMASK;
*gpio |= gpiopushpulltype;
}
}
void gpiosetpulltype(gpio_t* gpio,gpiopulltype_t pulltype)
{
GPIO_TypeDef* GPIOx = GPIOGETPORT(*gpio);
switch(pulltype)
{
case gpiopulluptype:
if((*gpio & 0xFF)==0xFF)
{
for(int i=0;i<16;i++)
{
GPIOx->PUPDR &= ~(GPIO_PUPDR_PUPDR0 << ((uint16_t)i * 2));
GPIOx->PUPDR |= (GPIO_PuPd_UP << (i * 2));
}
}
else
{
GPIOx->PUPDR &= ~(GPIO_PUPDR_PUPDR0 << ((uint16_t)(*gpio & 0xFF) * 2));
GPIOx->PUPDR |= (GPIO_PuPd_UP << ((*gpio & 0xFF) * 2));
}
*gpio &= ~GPIOPULLTYPEMASK;
*gpio |= gpiopulluptype;
break;
case gpiopulldowntype:
if((*gpio & 0xFF)==0xFF)
{
for(int i=0;i<16;i++)
{
GPIOx->PUPDR &= ~(GPIO_PUPDR_PUPDR0 << ((uint16_t)i * 2));
GPIOx->PUPDR |= (GPIO_PuPd_DOWN << (i * 2));
}
}
else
{
GPIOx->PUPDR &= ~(GPIO_PUPDR_PUPDR0 << ((uint16_t)(*gpio & 0xFF) * 2));
GPIOx->PUPDR |= (GPIO_PuPd_DOWN << ((*gpio & 0xFF) * 2));
}
*gpio &= ~GPIOPULLTYPEMASK;
*gpio |= gpiopulldowntype;
break;
default :
if((*gpio & 0xFF)==0xFF)
{
for(int i=0;i<16;i++)
{
GPIOx->PUPDR &= ~(GPIO_PUPDR_PUPDR0 << ((uint16_t)i * 2));
GPIOx->PUPDR |= (GPIO_PuPd_NOPULL << (i * 2));
}
}
else
{
GPIOx->PUPDR &= ~(GPIO_PUPDR_PUPDR0 << ((uint16_t)(*gpio & 0xFF) * 2));
GPIOx->PUPDR |= (GPIO_PuPd_NOPULL << ((*gpio & 0xFF) * 2));
}
*gpio &= ~GPIOPULLTYPEMASK;
*gpio |= gpionopulltype;
break;
}
}
void gpioset(gpio_t gpio)
{
GPIO_TypeDef* GPIOx = GPIOGETPORT(gpio);
if((gpio & 0xFF)==0xFF)
{
GPIOx->BSRRL = -1;
}
else
{
GPIOx->BSRRL = 1<<(gpio & 0xFF);
}
}
void gpioclr(gpio_t gpio)
{
GPIO_TypeDef* GPIOx = GPIOGETPORT(gpio);
if((gpio & 0xFF)==0xFF)
{
GPIOx->BSRRH = -1;
}
else
{
GPIOx->BSRRH = 1<<(gpio & 0xFF);
}
}
void gpiosetval(gpio_t gpio,int val)
{
GPIO_TypeDef* GPIOx = GPIOGETPORT(gpio);
if((gpio & 0xFF)==0xFF)
{
GPIOx->ODR = val;
}
else
{
if(val)
GPIOx->BSRRL = 1<<(gpio & 0xFF);
else
GPIOx->BSRRH = 1<<(gpio & 0xFF);
}
}
int gpiogetval(gpio_t gpio)
{
GPIO_TypeDef* GPIOx = GPIOGETPORT(gpio);
if((gpio & 0xFF)==0xFF)
{
return GPIOx->IDR;
}
else
{
return ((GPIOx->IDR>>(gpio & 0xFF)) & 1);
}
}