2013-10-16 16:20:57 +02:00
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/************************************************************************************
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* configs/spark/src/up_wireless.c
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*
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* Copyright (C) 2009, 2013 Gregory Nutt. All rights reserved.
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* Author: Laurent Latil <laurent@latil.nom.fr>
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* David Sidrane <david_s5@nscdg.com>
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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 <stdint.h>
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#include <stdbool.h>
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#include <debug.h>
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#include <errno.h>
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#include <nuttx/irq.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/wireless/wireless.h>
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#include <nuttx/wireless/cc3000.h>
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#include <nuttx/wireless/cc3000/include/cc3000_upif.h>
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#include "stm32.h"
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#include "spark.h"
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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#ifdef CONFIG_WL_CC3000
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#ifndef CONFIG_WIRELESS
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# error "Wireless support requires CONFIG_WIRELESS"
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#endif
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#ifndef CONFIG_STM32_SPI2
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# error "CC3000 Wireless support requires CONFIG_STM32_SPI2"
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#endif
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#ifndef CC3000_SPI_FREQUENCY
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# define CC3000_SPI_FREQUENCY 16000000
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#endif
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#ifndef CC3000_SPIDEV
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# define CC3000_SPIDEV 2
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#endif
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#if CC3000_SPIDEV != 2
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# error "CC3000_SPIDEV must be 2"
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#endif
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#ifndef CC3000_DEVMINOR
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# define CC3000_DEVMINOR 0
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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_config_s
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{
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struct cc3000_config_s dev;
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xcpt_t handler;
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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 CC3000 driver from differences in GPIO interrupt handling
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* by varying boards and MCUs. If possible, interrupts should be configured
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* on falling edges to detect the Ready Condition At T2: The normal master
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* SPI write sequence is SPI_CS low, followed by SPI_IRQ low CC3000 to host,
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* indicating that the CC3000 core module is ready to accept data. T2
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* duration is approximately 7 ms.
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*
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2013-10-25 23:51:38 +02:00
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* irq_attach - Attach the CC3000 interrupt handler to the GPIO interrupt
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* irq_enable - Enable or disable the GPIO interrupt
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* clear_irq - Acknowledge/clear any pending GPIO interrupt
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* power_enable - Enable or disable Module enable.
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* chip_chip_select - The Chip Select
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* wl_read_irq - Return the state of the interrupt GPIO input
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2013-10-16 16:20:57 +02:00
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*/
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static int wl_attach_irq(FAR struct cc3000_config_s *state, xcpt_t handler);
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static void wl_enable_irq(FAR struct cc3000_config_s *state, bool enable);
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static void wl_clear_irq(FAR struct cc3000_config_s *state);
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static void wl_select(FAR struct cc3000_config_s *state, bool enable);
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static void wl_enable_power(FAR struct cc3000_config_s *state, bool enable);
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2013-10-23 16:37:16 +02:00
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static bool wl_read_irq(FAR struct cc3000_config_s *state);
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2013-10-30 17:29:51 +01:00
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#ifdef CONFIG_CC3000_PROBES
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2013-10-23 16:37:16 +02:00
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static bool probe(FAR struct cc3000_config_s *state,int n, bool s);
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2013-10-30 17:29:51 +01:00
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#endif
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2013-10-16 16:20:57 +02:00
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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 CC3000
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* driver. This structure provides information about the configuration
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* of the CC3000 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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static struct stm32_config_s g_cc3000_info =
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{
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2013-10-25 23:51:38 +02:00
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.dev.spi_frequency = CONFIG_CC3000_SPI_FREQUENCY,
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.dev.spi_mode = CONFIG_CC3000_SPI_MODE,
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.dev.irq_attach = wl_attach_irq,
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.dev.irq_enable = wl_enable_irq,
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.dev.irq_clear = wl_clear_irq,
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.dev.power_enable = wl_enable_power,
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.dev.chip_chip_select = wl_select,
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.dev.irq_read = wl_read_irq,
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2013-10-30 17:29:51 +01:00
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#ifdef CONFIG_CC3000_PROBES
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2013-10-25 23:51:38 +02:00
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.dev.probe = probe, /* This is used for debugging */
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2013-10-30 17:29:51 +01:00
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#endif
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2013-10-25 23:51:38 +02:00
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.handler = NULL,
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2013-10-16 16:20:57 +02:00
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};
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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 CC3000 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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* attach - Attach the CC3000 interrupt handler to the GPIO interrupt
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* enable - Enable or disable the GPIO interrupt
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* clear - Acknowledge/clear any pending GPIO interrupt
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* pendown - Return the state of the pen down GPIO input
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*/
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static int wl_attach_irq(FAR struct cc3000_config_s *state, xcpt_t handler)
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{
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FAR struct stm32_config_s *priv = (FAR struct stm32_config_s *)state;
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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 wl_enable_irq(FAR struct cc3000_config_s *state, bool enable)
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{
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FAR struct stm32_config_s *priv = (FAR struct stm32_config_s *)state;
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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->handler || !enable);
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/* Attach and enable, or detach and disable */
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ivdbg("enable:%d\n", enable);
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if (enable)
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{
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2013-10-23 16:37:16 +02:00
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(void)stm32_gpiosetevent(GPIO_WIFI_INT, false, true, false, priv->handler);
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2013-10-16 16:20:57 +02:00
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}
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else
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{
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(void)stm32_gpiosetevent(GPIO_WIFI_INT, false, false, false, NULL);
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}
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}
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static void wl_enable_power(FAR struct cc3000_config_s *state, bool enable)
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{
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ivdbg("enable:%d\n", enable);
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/* Active high enable */
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stm32_gpiowrite(GPIO_WIFI_EN, enable);
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}
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static void wl_select(FAR struct cc3000_config_s *state, bool enable)
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{
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ivdbg("enable:%d\n", enable);
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/* Active high enable */
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stm32_gpiowrite(GPIO_WIFI_CS, enable);
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}
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static void wl_clear_irq(FAR struct cc3000_config_s *state)
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{
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/* Does nothing */
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}
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2013-10-23 16:37:16 +02:00
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static bool wl_read_irq(FAR struct cc3000_config_s *state)
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2013-10-16 16:20:57 +02:00
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{
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2013-10-23 16:37:16 +02:00
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/* Active low*/
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return stm32_gpioread(GPIO_WIFI_INT) ? false : true;
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2013-10-16 16:20:57 +02:00
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}
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2013-10-30 17:29:51 +01:00
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#ifdef CONFIG_CC3000_PROBES
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static bool probe(FAR struct cc3000_config_s *state,int n, bool s)
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{
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if (n == 0)
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{
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stm32_gpiowrite(GPIO_D0, s);
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}
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if (n == 1)
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{
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stm32_gpiowrite(GPIO_D1, s);
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}
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return true;
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}
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#endif
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2013-10-16 16:20:57 +02:00
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: arch_wlinitialize
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*
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* Description:
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* Each board that supports a wireless device must provide this function.
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* This function is called by application-specific, setup logic to
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* configure the wireless device. This function will register the driver
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* as /dev/wirelessN where N is the minor device number.
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*
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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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2013-10-19 01:14:58 +02:00
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int wireless_archinitialize(void)
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2013-10-16 16:20:57 +02:00
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{
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FAR struct spi_dev_s *spi;
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/* Init SPI bus */
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idbg("minor %d\n", minor);
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2013-10-19 01:14:58 +02:00
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DEBUGASSERT(CONFIG_CC3000_DEVMINOR == 0);
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2013-10-16 16:20:57 +02:00
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2013-10-30 17:29:51 +01:00
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#ifdef CONFIG_CC3000_PROBES
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2013-10-23 16:37:16 +02:00
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stm32_configgpio(GPIO_D0);
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stm32_configgpio(GPIO_D1);
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stm32_gpiowrite(GPIO_D0, 1);
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stm32_gpiowrite(GPIO_D1, 1);
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2013-10-30 17:29:51 +01:00
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#endif
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2013-10-23 16:37:16 +02:00
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2013-10-16 16:20:57 +02:00
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/* Get an instance of the SPI interface */
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spi = up_spiinitialize(CONFIG_CC3000_SPIDEV);
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if (!spi)
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{
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idbg("Failed to initialize SPI bus %d\n", CONFIG_CC3000_SPIDEV);
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return -ENODEV;
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}
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/* Initialize and register the SPI CC3000 device */
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2013-10-19 01:14:58 +02:00
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int ret = cc3000_register(spi, &g_cc3000_info.dev, CONFIG_CC3000_DEVMINOR);
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2013-10-16 16:20:57 +02:00
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if (ret < 0)
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{
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idbg("Failed to initialize SPI bus %d\n", CONFIG_CC3000_SPIDEV);
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return -ENODEV;
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}
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return OK;
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}
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/*****************************************************************************
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* Name: C3000_wlan_init
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*
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* Description:
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* Initialize wlan driver
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*
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* Warning: This function must be called before ANY other wlan driver
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* function
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*
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* Input Parmeters:
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* sWlanCB Asynchronous events callback.
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* 0 no event call back.
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* - Call back parameters:
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* 1) event_type: HCI_EVNT_WLAN_UNSOL_CONNECT connect event,
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* HCI_EVNT_WLAN_UNSOL_DISCONNECT disconnect event,
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* HCI_EVNT_WLAN_ASYNC_SIMPLE_CONFIG_DONE config done,
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* HCI_EVNT_WLAN_UNSOL_DHCP dhcp report,
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* HCI_EVNT_WLAN_ASYNC_PING_REPORT ping report OR
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* HCI_EVNT_WLAN_KEEPALIVE keepalive.
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* 2) data: pointer to extra data that received by the event
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* (NULL no data).
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* 3) length: data length.
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* - Events with extra data:
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* HCI_EVNT_WLAN_UNSOL_DHCP: 4 bytes IP, 4 bytes Mask,
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* 4 bytes default gateway, 4 bytes DHCP server and 4 bytes
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* for DNS server.
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* HCI_EVNT_WLAN_ASYNC_PING_REPORT: 4 bytes Packets sent,
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* 4 bytes Packets received, 4 bytes Min round time,
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* 4 bytes Max round time and 4 bytes for Avg round time.
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*
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* sFWPatches 0 no patch or pointer to FW patches
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* sDriverPatches 0 no patch or pointer to driver patches
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* sBootLoaderPatches 0 no patch or pointer to bootloader patches
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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2013-10-25 23:51:38 +02:00
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void cc3000_wlan_init(tWlanCB sWlanCB, tFWPatches sFWPatches, tDriverPatches
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2013-10-16 16:20:57 +02:00
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sDriverPatches, tBootLoaderPatches sBootLoaderPatches)
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{
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2013-10-25 23:51:38 +02:00
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wlan_init(sWlanCB, sFWPatches, sDriverPatches, sBootLoaderPatches);
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2013-10-16 16:20:57 +02:00
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}
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#endif /* CONFIG_WL_CC3000 */
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