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nuttx/configs/spark/src/stm32_wireless.c

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/************************************************************************************
* configs/spark/src/stm32_wireless.c
*
* Copyright (C) 2009, 2013 Gregory Nutt. All rights reserved.
* Author: Laurent Latil <laurent@latil.nom.fr>
* David Sidrane <david_s5@nscdg.com>
*
* 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 <stdbool.h>
#include <debug.h>
#include <errno.h>
#include <nuttx/irq.h>
#include <nuttx/spi/spi.h>
#include <nuttx/wireless/wireless.h>
#include <nuttx/wireless/cc3000.h>
#include <nuttx/wireless/cc3000/include/cc3000_upif.h>
#include "stm32.h"
#include "spark.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
#ifdef CONFIG_WL_CC3000
#ifndef CONFIG_WIRELESS
# error "Wireless support requires CONFIG_WIRELESS"
#endif
#ifndef CONFIG_STM32_SPI2
# error "CC3000 Wireless support requires CONFIG_STM32_SPI2"
#endif
#ifndef CC3000_SPI_FREQUENCY
# define CC3000_SPI_FREQUENCY 16000000
#endif
#ifndef CC3000_SPIDEV
# define CC3000_SPIDEV 2
#endif
#if CC3000_SPIDEV != 2
# error "CC3000_SPIDEV must be 2"
#endif
#ifndef CC3000_DEVMINOR
# define CC3000_DEVMINOR 0
#endif
#ifndef CONFIG_CC3000_RX_BUFFER_SIZE
#define CONFIG_CC3000_RX_BUFFER_SIZE 132
#endif
/****************************************************************************
* Private Types
****************************************************************************/
struct stm32_config_s
{
struct cc3000_config_s dev;
xcpt_t handler;
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/* IRQ/GPIO access callbacks. These operations all hidden behind callbacks
* to isolate the CC3000 driver from differences in GPIO interrupt handling
* by varying boards and MCUs. If possible, interrupts should be configured
* on falling edges to detect the Ready Condition At T2: The normal master
* SPI write sequence is SPI_CS low, followed by SPI_IRQ low CC3000 to host,
* indicating that the CC3000 core module is ready to accept data. T2
* duration is approximately 7 ms.
*
* irq_attach - Attach the CC3000 interrupt handler to the GPIO interrupt
* irq_enable - Enable or disable the GPIO interrupt
* clear_irq - Acknowledge/clear any pending GPIO interrupt
* power_enable - Enable or disable Module enable.
* chip_chip_select - The Chip Select
* wl_read_irq - Return the state of the interrupt GPIO input
*/
static int wl_attach_irq(FAR struct cc3000_config_s *state, xcpt_t handler);
static void wl_enable_irq(FAR struct cc3000_config_s *state, bool enable);
static void wl_clear_irq(FAR struct cc3000_config_s *state);
static void wl_select(FAR struct cc3000_config_s *state, bool enable);
static void wl_enable_power(FAR struct cc3000_config_s *state, bool enable);
static bool wl_read_irq(FAR struct cc3000_config_s *state);
#ifdef CONFIG_CC3000_PROBES
static bool probe(FAR struct cc3000_config_s *state,int n, bool s);
#endif
/****************************************************************************
* Private Data
****************************************************************************/
/* A reference to a structure of this type must be passed to the CC3000
* driver. This structure provides information about the configuration
* of the CC3000 and provides some board-specific hooks.
*
* Memory for this structure is provided by the caller. It is not copied
* by the driver and is presumed to persist while the driver is active. The
* memory must be writable because, under certain circumstances, the driver
* may modify frequency or X plate resistance values.
*/
static struct stm32_config_s g_cc3000_info =
{
.dev.spi_frequency = CONFIG_CC3000_SPI_FREQUENCY,
.dev.spi_mode = CONFIG_CC3000_SPI_MODE,
.dev.max_rx_size = 0,
.dev.irq_attach = wl_attach_irq,
.dev.irq_enable = wl_enable_irq,
.dev.irq_clear = wl_clear_irq,
.dev.power_enable = wl_enable_power,
.dev.chip_chip_select = wl_select,
.dev.irq_read = wl_read_irq,
#ifdef CONFIG_CC3000_PROBES
.dev.probe = probe, /* This is used for debugging */
#endif
.handler = NULL,
};
/****************************************************************************
* Private Functions
****************************************************************************/
/* IRQ/GPIO access callbacks. These operations all hidden behind
* callbacks to isolate the CC3000 driver from differences in GPIO
* interrupt handling by varying boards and MCUs. If possible,
* interrupts should be configured on both rising and falling edges
* so that contact and loss-of-contact events can be detected.
*
* attach - Attach the CC3000 interrupt handler to the GPIO interrupt
* enable - Enable or disable the GPIO interrupt
* clear - Acknowledge/clear any pending GPIO interrupt
* pendown - Return the state of the pen down GPIO input
*/
static int wl_attach_irq(FAR struct cc3000_config_s *state, xcpt_t handler)
{
FAR struct stm32_config_s *priv = (FAR struct stm32_config_s *)state;
/* Just save the handler for use when the interrupt is enabled */
priv->handler = handler;
return OK;
}
static void wl_enable_irq(FAR struct cc3000_config_s *state, bool enable)
{
FAR struct stm32_config_s *priv = (FAR struct stm32_config_s *)state;
/* The caller should not attempt to enable interrupts if the handler
* has not yet been 'attached'
*/
DEBUGASSERT(priv->handler || !enable);
/* Attach and enable, or detach and disable */
ivdbg("enable:%d\n", enable);
if (enable)
{
(void)stm32_gpiosetevent(GPIO_WIFI_INT, false, true, false, priv->handler);
}
else
{
(void)stm32_gpiosetevent(GPIO_WIFI_INT, false, false, false, NULL);
}
}
static void wl_enable_power(FAR struct cc3000_config_s *state, bool enable)
{
ivdbg("enable:%d\n", enable);
/* Active high enable */
stm32_gpiowrite(GPIO_WIFI_EN, enable);
}
static void wl_select(FAR struct cc3000_config_s *state, bool enable)
{
ivdbg("enable:%d\n", enable);
/* Active high enable */
stm32_gpiowrite(GPIO_WIFI_CS, enable);
}
static void wl_clear_irq(FAR struct cc3000_config_s *state)
{
/* Does nothing */
}
static bool wl_read_irq(FAR struct cc3000_config_s *state)
{
/* Active low*/
return stm32_gpioread(GPIO_WIFI_INT) ? false : true;
}
#ifdef CONFIG_CC3000_PROBES
static bool probe(FAR struct cc3000_config_s *state,int n, bool s)
{
if (n == 0)
{
stm32_gpiowrite(GPIO_D0, s);
}
if (n == 1)
{
stm32_gpiowrite(GPIO_D1, s);
}
return true;
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: arch_wlinitialize
*
* Description:
* Each board that supports a wireless device must provide this function.
* This function is called by application-specific, setup logic to
* configure the wireless device. This function will register the driver
* as /dev/wirelessN where N is the minor device number.
*
*
* Returned Value:
* Zero is returned on success. Otherwise, a negated errno value is
* returned to indicate the nature of the failure.
*
****************************************************************************/
int wireless_archinitialize(size_t max_rx_size)
{
FAR struct spi_dev_s *spi;
/* Init SPI bus */
idbg("minor %d\n", minor);
DEBUGASSERT(CONFIG_CC3000_DEVMINOR == 0);
#ifdef CONFIG_CC3000_PROBES
stm32_configgpio(GPIO_D0);
stm32_configgpio(GPIO_D1);
stm32_gpiowrite(GPIO_D0, 1);
stm32_gpiowrite(GPIO_D1, 1);
#endif
/* Get an instance of the SPI interface */
spi = up_spiinitialize(CONFIG_CC3000_SPIDEV);
if (!spi)
{
idbg("Failed to initialize SPI bus %d\n", CONFIG_CC3000_SPIDEV);
return -ENODEV;
}
/* Initialize and register the SPI CC3000 device */
g_cc3000_info.dev.max_rx_size = max_rx_size ? max_rx_size : CONFIG_CC3000_RX_BUFFER_SIZE;
int ret = cc3000_register(spi, &g_cc3000_info.dev, CONFIG_CC3000_DEVMINOR);
if (ret < 0)
{
idbg("Failed to initialize SPI bus %d\n", CONFIG_CC3000_SPIDEV);
return -ENODEV;
}
return OK;
}
/*****************************************************************************
* Name: C3000_wlan_init
*
* Description:
* Initialize wlan driver
*
* Warning: This function must be called before ANY other wlan driver
* function
*
* Input Parmeters:
* sWlanCB Asynchronous events callback.
* 0 no event call back.
* - Call back parameters:
* 1) event_type: HCI_EVNT_WLAN_UNSOL_CONNECT connect event,
* HCI_EVNT_WLAN_UNSOL_DISCONNECT disconnect event,
* HCI_EVNT_WLAN_ASYNC_SIMPLE_CONFIG_DONE config done,
* HCI_EVNT_WLAN_UNSOL_DHCP dhcp report,
* HCI_EVNT_WLAN_ASYNC_PING_REPORT ping report OR
* HCI_EVNT_WLAN_KEEPALIVE keepalive.
* 2) data: pointer to extra data that received by the event
* (NULL no data).
* 3) length: data length.
* - Events with extra data:
* HCI_EVNT_WLAN_UNSOL_DHCP: 4 bytes IP, 4 bytes Mask,
* 4 bytes default gateway, 4 bytes DHCP server and 4 bytes
* for DNS server.
* HCI_EVNT_WLAN_ASYNC_PING_REPORT: 4 bytes Packets sent,
* 4 bytes Packets received, 4 bytes Min round time,
* 4 bytes Max round time and 4 bytes for Avg round time.
*
* sFWPatches 0 no patch or pointer to FW patches
* sDriverPatches 0 no patch or pointer to driver patches
* sBootLoaderPatches 0 no patch or pointer to bootloader patches
*
* Returned Value:
* None
*
****************************************************************************/
void cc3000_wlan_init(size_t max_tx_len,
tWlanCB sWlanCB,
tFWPatches sFWPatches, tDriverPatches
sDriverPatches, tBootLoaderPatches sBootLoaderPatches)
{
wlan_init(max_tx_len, sWlanCB, sFWPatches, sDriverPatches, sBootLoaderPatches);
}
#endif /* CONFIG_WL_CC3000 */
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