/boards/arm/stm32/mikroe-stm32f4/src/stm32_extmem.c
https://github.com/apache/incubator-nuttx · C · 148 lines · 48 code · 25 blank · 75 comment · 1 complexity · 9dd61ff10cd62b9a1764f31a9513a9e5 MD5 · raw file
- /****************************************************************************
- * boards/arm/stm32/mikroe_stm32f4/src/stm32_extmem.c
- *
- * Copyright (C) 2012-2013 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <nuttx/config.h>
- #include <stdint.h>
- #include <assert.h>
- #include <debug.h>
- #include <arch/board/board.h>
- #include "chip.h"
- #include "arm_arch.h"
- #include "stm32_gpio.h"
- #include "stm32.h"
- #include "mikroe-stm32f4.h"
- /****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
- #ifndef CONFIG_STM32_FSMC
- # warning "FSMC is not enabled"
- #endif
- #if STM32_NGPIO_PORTS < 6
- # error "Required GPIO ports not enabled"
- #endif
- #define STM32_FSMC_NADDRCONFIGS 26
- #define STM32_FSMC_NDATACONFIGS 16
- /****************************************************************************
- * Public Data
- ****************************************************************************/
- /* GPIO configurations common to most external memories */
- static const uint32_t g_addressconfig[STM32_FSMC_NADDRCONFIGS] =
- {
- GPIO_FSMC_A0, GPIO_FSMC_A1 , GPIO_FSMC_A2, GPIO_FSMC_A3, GPIO_FSMC_A4 , GPIO_FSMC_A5,
- GPIO_FSMC_A6, GPIO_FSMC_A7, GPIO_FSMC_A8, GPIO_FSMC_A9, GPIO_FSMC_A10, GPIO_FSMC_A11,
- GPIO_FSMC_A12, GPIO_FSMC_A13, GPIO_FSMC_A14, GPIO_FSMC_A15, GPIO_FSMC_A16, GPIO_FSMC_A17,
- GPIO_FSMC_A18, GPIO_FSMC_A19, GPIO_FSMC_A20, GPIO_FSMC_A21, GPIO_FSMC_A22, GPIO_FSMC_A23,
- GPIO_FSMC_A24, GPIO_FSMC_A25
- };
- static const uint32_t g_dataconfig[STM32_FSMC_NDATACONFIGS] =
- {
- GPIO_FSMC_D0, GPIO_FSMC_D1 , GPIO_FSMC_D2, GPIO_FSMC_D3, GPIO_FSMC_D4 , GPIO_FSMC_D5,
- GPIO_FSMC_D6, GPIO_FSMC_D7, GPIO_FSMC_D8, GPIO_FSMC_D9, GPIO_FSMC_D10, GPIO_FSMC_D11,
- GPIO_FSMC_D12, GPIO_FSMC_D13, GPIO_FSMC_D14, GPIO_FSMC_D15
- };
- /****************************************************************************
- * Private Data
- ****************************************************************************/
- /****************************************************************************
- * Private Functions
- ****************************************************************************/
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: stm32_extmemgpios
- *
- * Description:
- * Initialize GPIOs for external memory usage
- *
- ****************************************************************************/
- void stm32_extmemgpios(const uint32_t *gpios, int ngpios)
- {
- int i;
- /* Configure GPIOs */
- for (i = 0; i < ngpios; i++)
- {
- stm32_configgpio(gpios[i]);
- }
- }
- /****************************************************************************
- * Name: stm32_extmemaddr
- *
- * Description:
- * Initialize address line GPIOs for external memory access
- *
- ****************************************************************************/
- void stm32_extmemaddr(int naddrs)
- {
- stm32_extmemgpios(g_addressconfig, naddrs);
- }
- /****************************************************************************
- * Name: stm32_extmemdata
- *
- * Description:
- * Initialize data line GPIOs for external memory access
- *
- ****************************************************************************/
- void stm32_extmemdata(int ndata)
- {
- stm32_extmemgpios(g_dataconfig, ndata);
- }