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stm32l4: add gpio support

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Just the basic core common functionality gained for free by being a common
peripheral.  Enough for a miniblink.

Fixes some errors in the GPIO memory map.  ST's naming of AHB2 vs AHB3 is
confusing.
This commit is contained in:
Karl Palsson 2015-11-13 02:13:31 +00:00
parent 8afc983f3e
commit f14c678ccb
5 changed files with 102 additions and 5 deletions
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5
doc/stm32l4/Doxyfile
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@ -19,10 +19,15 @@ INPUT = ../../include/libopencm3/license.dox
INPUT +=../../include/libopencm3/stm32/l4
#INPUT +=../../include/libopencm3/stm32/common
INPUT +=../../include/libopencm3/stm32/common/rcc_common_all.h
INPUT +=../../include/libopencm3/stm32/common/gpio_common_all.h
INPUT +=../../include/libopencm3/stm32/common/gpio_common_f234.h
INPUT +=../../include/libopencm3/stm32/common/gpio_common_f24.h
INPUT +=../../lib/stm32/l4
#INPUT +=../../lib/stm32/common
INPUT +=../../lib/stm32/common/rcc_common_all.c
INPUT +=../../lib/stm32/common/gpio_common_all.c
INPUT +=../../lib/stm32/common/gpio_common_f0234.c
# No headers to exclude until we include some!
EXCLUDE =

2
include/libopencm3/stm32/gpio.h
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@ -36,6 +36,8 @@
# include <libopencm3/stm32/l0/gpio.h>
#elif defined(STM32L1)
# include <libopencm3/stm32/l1/gpio.h>
#elif defined(STM32L4)
# include <libopencm3/stm32/l4/gpio.h>
#else
# error "stm32 family not defined."
#endif

89
include/libopencm3/stm32/l4/gpio.h Normal file
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@ -0,0 +1,89 @@
/** @defgroup gpio_defines GPIO Defines
*
* @brief <b>Defined Constants and Types for the STM32L4xx General Purpose I/O</b>
*
* @ingroup STM32L4xx_defines
*
* @version 1.0.0
*
* @date 12 November 2015
*
* LGPL License Terms @ref lgpl_license
*/
/*
* This file is part of the libopencm3 project.
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef LIBOPENCM3_GPIO_H
#define LIBOPENCM3_GPIO_H
#include <libopencm3/stm32/common/gpio_common_f24.h>
/*****************************************************************************/
/* Module definitions */
/*****************************************************************************/
/*****************************************************************************/
/* Register definitions */
/*****************************************************************************/
#define GPIO_BRR(port) MMIO32((port) + 0x28)
#define GPIOA_BRR GPIO_BRR(GPIOA)
#define GPIOB_BRR GPIO_BRR(GPIOB)
#define GPIOC_BRR GPIO_BRR(GPIOC)
#define GPIOD_BRR GPIO_BRR(GPIOD)
#define GPIOE_BRR GPIO_BRR(GPIOE)
#define GPIOF_BRR GPIO_BRR(GPIOF)
#define GPIOG_BRR GPIO_BRR(GPIOG)
#define GPIOH_BRR GPIO_BRR(GPIOH)
#define GPIO_ASC(port) MMIO32((port) + 0x2c)
#define GPIOA_ASC GPIO_ASC(GPIOA)
#define GPIOB_ASC GPIO_ASC(GPIOB)
#define GPIOC_ASC GPIO_ASC(GPIOC)
#define GPIOD_ASC GPIO_ASC(GPIOD)
#define GPIOE_ASC GPIO_ASC(GPIOE)
#define GPIOF_ASC GPIO_ASC(GPIOF)
#define GPIOG_ASC GPIO_ASC(GPIOG)
#define GPIOH_ASC GPIO_ASC(GPIOH)
/*****************************************************************************/
/* Register values */
/*****************************************************************************/
/** @defgroup gpio_speed GPIO Output Pin Speed
@ingroup gpio_defines
@{*/
#define GPIO_OSPEED_LOW 0x0
#define GPIO_OSPEED_MED 0x1
#define GPIO_OSPEED_FAST 0x2
#define GPIO_OSPEED_HIGH 0x3
/**@}*/
/*****************************************************************************/
/* API definitions */
/*****************************************************************************/
/*****************************************************************************/
/* API Functions */
/*****************************************************************************/
BEGIN_DECLS
END_DECLS
#endif

10
include/libopencm3/stm32/l4/memorymap.h
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@ -32,7 +32,7 @@
#define PERIPH_BASE_APB1 (PERIPH_BASE + 0x00000)
#define PERIPH_BASE_APB2 (PERIPH_BASE + 0x10000)
#define PERIPH_BASE_AHB1 (PERIPH_BASE + 0x20000)
#define PERIPH_BASE_AHB2 (PERIPH_BASE + 0x80000)
#define PERIPH_BASE_AHB2 (0x48000000U)
/* Register boundary addresses */
@ -93,10 +93,10 @@
#define TSC_BASE (PERIPH_BASE_AHB1 + 0x4000)
/* AHB2 */
#define GPIO_PORT_A_BASE (PERIPH_BASE_AHB2 + 0x00000)
#define GPIO_PORT_B_BASE (PERIPH_BASE_AHB2 + 0x00000)
#define GPIO_PORT_C_BASE (PERIPH_BASE_AHB2 + 0x00000)
#define GPIO_PORT_D_BASE (PERIPH_BASE_AHB2 + 0x00000)
#define GPIO_PORT_A_BASE (PERIPH_BASE_AHB2 + 0x0000)
#define GPIO_PORT_B_BASE (PERIPH_BASE_AHB2 + 0x0400)
#define GPIO_PORT_C_BASE (PERIPH_BASE_AHB2 + 0x0800)
#define GPIO_PORT_D_BASE (PERIPH_BASE_AHB2 + 0x0c00)
#define GPIO_PORT_E_BASE (PERIPH_BASE_AHB2 + 0x1000)
#define GPIO_PORT_F_BASE (PERIPH_BASE_AHB2 + 0x1400)
#define GPIO_PORT_G_BASE (PERIPH_BASE_AHB2 + 0x1800)

1
lib/stm32/l4/Makefile
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@ -41,6 +41,7 @@ OBJS =
# common/shared objs
OBJS += rcc_common_all.o
OBJS += gpio_common_all.o gpio_common_f0234.o
VPATH += ../../usb:../:../../cm3:../common
VPATH += ../../ethernet