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/****************************************************************************
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* configs/freedom-kl25z/src/stm32_mrf24j40.c
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*
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* Copyright (C) 2017 Gregory Nutt, All rights reserver
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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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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <errno.h>
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#include <assert.h>
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#include <debug.h>
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#include <nuttx/arch.h>
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#include <nuttx/fs/fs.h>
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#include <nuttx/wireless/ieee80154/mrf24j40.h>
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#include "stm32_gpio.h"
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#include "stm32_exti.h"
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#include "stm32_spi.h"
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#include "clicker2-stm32.h"
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#ifdef CONFIG_IEEE802154_MRF24J40
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#ifndef CONFIG_DRIVERS_WIRELESS
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# error Wireless support requires CONFIG_DRIVERS_WIRELESS
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#endif
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#if !defined(CONFIG_CLICKER2_STM32_MB1_BEE) && !defined(CONFIG_CLICKER2_STM32_MB2_BEE)
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# error Only the Mikroe BEE board is supported
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#endif
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#ifdef CONFIG_CLICKER2_STM32_MB1_BEE
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# ifndef CONFIG_STM32_SPI3
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# error Mikroe BEE on mikroBUS1 requires CONFIG_STM32_SPI3
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# endif
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#endif
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#ifdef CONFIG_CLICKER2_STM32_MB2_BEE
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# ifndef CONFIG_STM32_SPI2
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# error Mikroe BEE on mikroBUS1 requires CONFIG_STM32_SPI2
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# endif
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#endif
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct stm32_priv_s
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{
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struct mrf24j40_lower_s dev;
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xcpt_t handler;
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uint32_t intcfg;
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uint8_t spidev;
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};
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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/* IRQ/GPIO access callbacks. These operations all hidden behind callbacks
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* to isolate the MRF24J40 driver from differences in GPIO interrupt handling
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* varying boards and MCUs.
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*
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* irq_attach - Attach the MRF24J40 interrupt handler to the GPIO
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interrupt
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* irq_enable - Enable or disable the GPIO interrupt
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*/
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static int stm32_attach_irq(FAR const struct mrf24j40_lower_s *lower,
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xcpt_t handler);
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static void stm32_enable_irq(FAR const struct mrf24j40_lower_s *lower,
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int state);
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static int stm32_mrf24j40_devsetup(FAR struct stm32_priv_s *priv)'
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* A reference to a structure of this type must be passed to the MRF24J40
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* driver. This structure provides information about the configuration
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* of the MRF24J40 and provides some board-specific hooks.
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*
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* Memory for this structure is provided by the caller. It is not copied
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* by the driver and is presumed to persist while the driver is active. The
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* memory must be writable because, under certain circumstances, the driver
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* may modify frequency or X plate resistance values.
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*/
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#ifdef CONFIG_CLICKER2_STM32_MB1_BEE
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static struct stm32_priv_s g_mrf24j40_mb1_priv =
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{
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.dev.attach = stm32_attach_irq,
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.dev.enable = stm32_enable_irq,
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.handler = NULL,
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.intcfg = GPIO_MB1_INT,
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.spidev = 3,
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};
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#endif
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#ifdef CONFIG_CLICKER2_STM32_MB2_BEE
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static struct stm32_priv_s g_mrf24j40_mb2_priv =
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{
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.dev.attach = stm32_attach_irq,
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.dev.enable = stm32_enable_irq,
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.uint32_t = GPIO_MB2_INT,
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.spidev = 2,
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};
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#endif
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/* IRQ/GPIO access callbacks. These operations all hidden behind
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* callbacks to isolate the MRF24J40 driver from differences in GPIO
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* interrupt handling by varying boards and MCUs. If possible,
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* interrupts should be configured on both rising and falling edges
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* so that contact and loss-of-contact events can be detected.
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*
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* irq_attach - Attach the MRF24J40 interrupt handler to the GPIO
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* interrupt
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* irq_enable - Enable or disable the GPIO interrupt
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*/
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static int stm32_attach_irq(FAR struct mrf24j40_lower_s *lower,
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xcpt_t handler)
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{
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FAR struct stm32_priv_s *priv = (FAR struct mrf24j40_lower_s *)lower;
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DEBUASSERT(priv != NULL);
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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 stm32_enable_irq(FAR struct mrf24j40_lower_s *lower, int state)
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{
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FAR struct stm32_priv_s *priv = (FAR struct mrf24j40_lower_s *)lower;
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/* The caller should not attempt to enable interrupts if the handler
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* has not yet been 'attached'
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*/
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DEBUGASSERT(priv != NULL && (priv->handler != NULL || state == 0));
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/* Attach and enable, or detach and disable */
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wlinfo("state:%d\n", state);
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if (state != 0)
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{
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(void)stm32_gpiosetevent(priv->intcfg, true, true, true,
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priv->handler, lower);
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}
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else
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{
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(void)stm32_gpiosetevent(priv->intcfg, false, false, false,
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NULL, NULL);
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}
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}
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/****************************************************************************
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* Name: stm32_mrf24j40_devsetup
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*
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* Description:
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* Initialize one the MRF24J40 device in one mikroBUS slot
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*
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* Returned Value:
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* Zero is returned on success. Otherwise, a negated errno value is
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* returned to indicate the nature of the failure.
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*
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****************************************************************************/
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static int stm32_mrf24j40_devsetup(FAR struct stm32_priv_s *priv)
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{
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FAR struct ieee802154_radio_s *radio;
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FAR struct spi_dev_s *spi;
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/* Configure the interrupt pin */
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stm32_configgpio(priv->intcfg);
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/* Initialize the SPI bus and get an instance of the SPI interface */
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spi = stm32_spibus_initialize(priv->spidev);
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if (spi == NULL)
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{
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wlerr("ERROR: Failed to initialize SPI bus %d\n", priv->spidev);
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return -ENODEV;
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}
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/* Initialize and register the SPI MRF24J40 device */
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radio = mrf24j40_init(spi, &priv->dev);
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if (radio == NULL)
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{
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wlerr("ERROR: Failed to initialize SPI bus %d\n", priv->spidev);
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return -ENODEV;
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}
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/* Now.. do what with the MRF24J40 instance? */
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#warning Missing logic
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return OK;
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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: stm32_mrf24j40_initialize
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*
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* Description:
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* Initialize the MRF24J40 device.
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*
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* Returned Value:
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* Zero is returned on success. Otherwise, a negated errno value is
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* returned to indicate the nature of the failure.
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*
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****************************************************************************/
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int stm32_mrf24j40_initialize(void)
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{
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int ret;
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#ifdef CONFIG_CLICKER2_STM32_MB1_BEE
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wlinfo("Configuring BEE in mikroBUS1\n");
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ret = stm32_mrf24j40_devsetup(&g_mrf24j40_mb1_priv);
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if (ret < 0)
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{
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wlerr("ERROR: Failed to initialize BD in mikroBUS1: %d\n", ret);
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}
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#endif
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#ifdef CONFIG_CLICKER2_STM32_MB2_BEE
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wlinfo("Configuring BEE in mikroBUS2\n");
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ret = stm32_mrf24j40_devsetup(&g_mrf24j40_mb2_priv);
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if (ret < 0)
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{
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wlerr("ERROR: Failed to initialize BD in mikroBUS2: %d\n", ret);
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}
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#endif
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UNUSED(ret);
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return OK;
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}
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#endif /* CONFIG_IEEE802154_MRF24J40 */
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Gregory Nutt