forked from Archive/PX4-Autopilot
212 lines
7.4 KiB
C
212 lines
7.4 KiB
C
/****************************************************************************
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* configs/fire-stm32v2/src/up_enc28j60.c
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*
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* Copyright (C) 2012 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/* 2MBit SPI FLASH OR ENC28J60
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*
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* --- ------ -------------- -----------------------------------------------------
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* PIN NAME SIGNAL NOTES
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* --- ------ -------------- -----------------------------------------------------
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*
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* 29 PA4 PA4-SPI1-NSS 10Mbit ENC28J60, SPI 2M FLASH
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* 30 PA5 PA5-SPI1-SCK 2.4" TFT + Touchscreen, 10Mbit ENC28J60, SPI 2M FLASH
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* 31 PA6 PA6-SPI1-MISO 2.4" TFT + Touchscreen, 10Mbit ENC28J60, SPI 2M FLASH
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* 32 PA7 PA7-SPI1-MOSI 2.4" TFT + Touchscreen, 10Mbit ENC28J60, SPI 2M FLASH
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*/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <debug.h>
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#include <nuttx/spi.h>
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#include <nuttx/net/enc28j60.h>
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#include <arch/board/board.h>
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#include "chip.h"
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#include "up_arch.h"
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#include "up_internal.h"
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#include "fire-internal.h"
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#ifdef CONFIG_ENC28J60
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/****************************************************************************
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* Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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/* ENC28J60
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*
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* --- ------ -------------- -----------------------------------------------------
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* PIN NAME SIGNAL NOTES
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* --- ------ -------------- -----------------------------------------------------
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*
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* 29 PA4 PA4-SPI1-NSS 10Mbit ENC28J60, SPI 2M FLASH
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* 30 PA5 PA5-SPI1-SCK 2.4" TFT + Touchscreen, 10Mbit ENC28J60, SPI 2M FLASH
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* 31 PA6 PA6-SPI1-MISO 2.4" TFT + Touchscreen, 10Mbit ENC28J60, SPI 2M FLASH
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* 32 PA7 PA7-SPI1-MOSI 2.4" TFT + Touchscreen, 10Mbit ENC28J60, SPI 2M FLASH
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* 98 PE1 PE1-FSMC_NBL1 2.4" TFT + Touchscreen, 10Mbit EN28J60 Reset
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* 4 PE5 (no name) 10Mbps ENC28J60 Interrupt
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*/
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/* ENC28J60 is on SPI1 */
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#ifndef CONFIG_STM32_SPI1
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# error "Need CONFIG_STM32_SPI1 in the configuration"
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#endif
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/* SPI Assumptions **********************************************************/
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#define ENC28J60_SPI_PORTNO 1 /* On SPI1 */
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#define ENC28J60_DEVNO 0 /* Only one ENC28J60 */
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct stm32_lower_s
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{
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const struct enc_lower_s lower; /* Low-level MCU interface */
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xcpt_t handler; /* ENC28J60 interrupt handler */
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};
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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static int up_attach(FAR const struct enc_lower_s *lower, xcpt_t handler);
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static void up_enable(FAR const struct enc_lower_s *lower);
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static void up_disable(FAR const struct enc_lower_s *lower);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* The ENC28J60 normal provides interrupts to the MCU via a GPIO pin. The
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* following structure provides an MCU-independent mechanixm for controlling
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* the ENC28J60 GPIO interrupt.
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*/
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static struct stm32_lower_s g_enclower =
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{
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.lower =
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{
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.attach = up_attach,
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.enable = up_enable,
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.disable = up_disable
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},
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.handler = NULL,
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: struct enc_lower_s methods
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****************************************************************************/
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static int up_attach(FAR const struct enc_lower_s *lower, xcpt_t handler)
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{
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FAR struct stm32_lower_s *priv = (FAR struct stm32_lower_s *)lower;
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/* Just save the handler for use when the interrupt is enabled */
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priv->handler = handler;
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return OK;
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}
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static void up_enable(FAR const struct enc_lower_s *lower)
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{
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FAR struct stm32_lower_s *priv = (FAR struct stm32_lower_s *)lower;
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DEBUGASSERT(priv->handler);
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(void)stm32_gpiosetevent(GPIO_ENC28J60_INTR, false, true, true, priv->handler);
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}
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static void up_disable(FAR const struct enc_lower_s *lower)
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{
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(void)stm32_gpiosetevent(GPIO_ENC28J60_INTR, false, true, true, NULL);
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: up_netinitialize
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****************************************************************************/
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void up_netinitialize(void)
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{
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FAR struct spi_dev_s *spi;
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int ret;
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/* Assumptions:
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* 1) ENC28J60 pins were configured in up_spi.c early in the boot-up phase.
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* 2) Clocking for the SPI1 peripheral was also provided earlier in boot-up.
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*/
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spi = up_spiinitialize(ENC28J60_SPI_PORTNO);
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if (!spi)
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{
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nlldbg("Failed to initialize SPI port %d\n", ENC28J60_SPI_PORTNO);
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return;
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}
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/* Take ENC28J60 out of reset (active low)*/
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stm32_gpiowrite(GPIO_ENC28J60_RESET, true);
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/* Bind the SPI port to the ENC28J60 driver */
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ret = enc_initialize(spi, &g_enclower.lower, ENC28J60_DEVNO);
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if (ret < 0)
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{
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nlldbg("Failed to bind SPI port %d ENC28J60 device %d: %d\n",
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ENC28J60_SPI_PORTNO, ENC28J60_DEVNO, ret);
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return;
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}
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nllvdbg("Bound SPI port %d to ENC28J60 device %d\n",
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ENC28J60_SPI_PORTNO, ENC28J60_DEVNO);
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}
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#endif /* CONFIG_ENC28J60 */
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