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/****************************************************************************
* configs/olimex-stm32-p107/src/up_encx24j600.c
*
* Copyright (C) 2012 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 <stdio.h>
#include <debug.h>
#include <nuttx/spi/spi.h>
#include <nuttx/net/encx24j600.h>
#include <arch/board/board.h>
#include "chip.h"
#include "up_arch.h"
#include "up_internal.h"
#include "p107-internal.h"
#ifdef CONFIG_ENCX24J600
/****************************************************************************
* Definitions
****************************************************************************/
/* Configuration ************************************************************/
/* ENCX24J600
*
* --- ------ -------------- ------------------------------------------------
* PIN NAME SIGNAL NOTES
* --- ------ -------------- ------------------------------------------------
*
* 54 PB15 PB15-CS_UEXT ENCX24J600 #CS
* 78 PC10 PC10-SPI3-SCK ENCX24J600 SCK
* 79 PC11 PC11-SPI3-MISO ENCX24J600 MISO
* 80 PC12 PC12-SPI3-MOSI ENCX24J600 MOSI
* 95 PB8 PB8 ENCX24J600 #Interrupt
*/
/* ENCX24J600 is on SPI3 */
#ifndef CONFIG_STM32_SPI3
# error "Need CONFIG_STM32_SPI3 in the configuration"
#endif
/* SPI Assumptions **********************************************************/
#define ENCX24J600_SPI_PORTNO 3 /* On SPI1 */
#define ENCX24J600_DEVNO 0 /* Only one ENCX24J600 */
/****************************************************************************
* Private Types
****************************************************************************/
struct stm32_lower_s
{
const struct enc_lower_s lower; /* Low-level MCU interface */
xcpt_t handler; /* ENCX24J600 interrupt handler */
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
static int up_attach(FAR const struct enc_lower_s *lower, xcpt_t handler);
static void up_enable(FAR const struct enc_lower_s *lower);
static void up_disable(FAR const struct enc_lower_s *lower);
/****************************************************************************
* Private Data
****************************************************************************/
/* The ENCX24J600 normal provides interrupts to the MCU via a GPIO pin. The
* following structure provides an MCU-independent mechanixm for controlling
* the ENCX24J600 GPIO interrupt.
*/
static struct stm32_lower_s g_enclower =
{
.lower =
{
.attach = up_attach,
.enable = up_enable,
.disable = up_disable
},
.handler = NULL,
};
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: struct enc_lower_s methods
****************************************************************************/
static int up_attach(FAR const struct enc_lower_s *lower, xcpt_t handler)
{
FAR struct stm32_lower_s *priv = (FAR struct stm32_lower_s *)lower;
/* Just save the handler for use when the interrupt is enabled */
priv->handler = handler;
return OK;
}
static void up_enable(FAR const struct enc_lower_s *lower)
{
FAR struct stm32_lower_s *priv = (FAR struct stm32_lower_s *)lower;
DEBUGASSERT(priv->handler);
(void)stm32_gpiosetevent(GPIO_ENCX24J600_INTR, false, true, true, priv->handler);
}
static void up_disable(FAR const struct enc_lower_s *lower)
{
(void)stm32_gpiosetevent(GPIO_ENCX24J600_INTR, false, true, true, NULL);
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_netinitialize
****************************************************************************/
void up_netinitialize(void)
{
FAR struct spi_dev_s *spi;
int ret;
/* Assumptions:
* 1) ENCX24J600 pins were configured in up_spi.c early in the boot-up phase.
* 2) Clocking for the SPI1 peripheral was also provided earlier in boot-up.
*/
spi = up_spiinitialize(ENCX24J600_SPI_PORTNO);
if (!spi)
{
nlldbg("Failed to initialize SPI port %d\n", ENCX24J600_SPI_PORTNO);
return;
}
/* Bind the SPI port to the ENCX24J600 driver */
ret = enc_initialize(spi, &g_enclower.lower, ENCX24J600_DEVNO);
if (ret < 0)
{
nlldbg("Failed to bind SPI port %d ENCX24J600 device %d: %d\n",
ENCX24J600_SPI_PORTNO, ENCX24J600_DEVNO, ret);
return;
}
nllvdbg("Bound SPI port %d to ENCX24J600 device %d\n",
ENCX24J600_SPI_PORTNO, ENCX24J600_DEVNO);
}
#endif /* CONFIG_ENCX24J600 */
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