327 lines
9.6 KiB
C
327 lines
9.6 KiB
C
/****************************************************************************
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* boards/arm/stm32/clicker2-stm32/src/stm32_mrf24j40.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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/ieee802154/ieee802154_mac.h>
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#include <nuttx/wireless/ieee802154/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) && \
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!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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FAR void *arg;
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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, FAR void *arg);
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static void stm32_enable_irq(FAR const struct mrf24j40_lower_s *lower,
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bool 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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.arg = 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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.handler = NULL,
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.arg = NULL,
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.intcfg = 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 const struct mrf24j40_lower_s *lower,
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xcpt_t handler, FAR void *arg)
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{
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FAR struct stm32_priv_s *priv = (FAR struct stm32_priv_s *)lower;
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DEBUGASSERT(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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priv->arg = arg;
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return OK;
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}
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static void stm32_enable_irq(FAR const struct mrf24j40_lower_s *lower,
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bool state)
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{
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FAR struct stm32_priv_s *priv = (FAR struct stm32_priv_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));
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#ifdef CONFIG_CLICKER2_STM32_MRF24J40LH_VERBOSE
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wlinfo("state:%d\n", (int)state);
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#endif
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/* Attach and enable, or detach and disable */
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if (state)
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{
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stm32_gpiosetevent(priv->intcfg, false, true, true,
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priv->handler, priv->arg);
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}
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else
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{
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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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MACHANDLE mac;
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FAR struct spi_dev_s *spi;
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int ret;
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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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/* Create a 802.15.4 MAC device from a 802.15.4 compatible radio device. */
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mac = mac802154_create(radio);
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if (mac == NULL)
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{
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wlerr("ERROR: Failed to initialize IEEE802.15.4 MAC\n");
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return -ENODEV;
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}
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#ifdef CONFIG_IEEE802154_NETDEV
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/* Use the IEEE802.15.4 MAC interface instance to create a 6LoWPAN
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* network interface by wrapping the MAC intrface instance in a
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* network device driver via mac802154dev_register().
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*/
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ret = mac802154netdev_register(mac);
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if (ret < 0)
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{
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wlerr("ERROR: Failed to register the MAC network driver wpan%d: %d\n",
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0, ret);
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return ret;
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}
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#endif
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#ifdef CONFIG_IEEE802154_MACDEV
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/* If want to call these APIs from userspace, you have to wrap the MAC
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* interface in a character device viamac802154dev_register().
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*/
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ret = mac802154dev_register(mac, 0);
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if (ret < 0)
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{
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wlerr("ERROR:");
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wlerr(" Failed to register the MAC character driver /dev/ieee%d: %d\n",
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0, ret);
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return 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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/****************************************************************************
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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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