214 lines
7.2 KiB
C
214 lines
7.2 KiB
C
/****************************************************************************
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* drivers//wireless/cc3000.h
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*
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* Copyright (C) 2013-2014 Gregory Nutt. All rights reserved.
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* Authors: Gregory Nutt <gnutt@nuttx.org>
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* David Sidrane <david_s5@nscdg.com>
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*
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* References:
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* CC30000 from Texas Instruments http://processors.wiki.ti.com/index.php/CC3000
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*
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* See also:
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* http://processors.wiki.ti.com/index.php/CC3000_Host_Driver_Porting_Guide
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* http://processors.wiki.ti.com/index.php/CC3000_Host_Programming_Guide
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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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#ifndef __DRIVERS_WIRELESS_WIRELESS_CC3000_H
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#define __DRIVERS_WIRELESS_WIRELESS_CC3000_H
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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 <mqueue.h>
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#include <pthread.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/irq.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/cc3000_common.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define CONFIG_CC3000_MT /* Indicate multi threaded version */
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#ifdef CONFIG_CC3000_MT
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# define CONFIG_WL_MAX_SOCKETS 5
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#endif
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/* CC3000 Interfaces ********************************************************/
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/* Driver support ***********************************************************/
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/* This format is used to construct the /dev/input[n] device driver path. It
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* defined here so that it will be used consistently in all places.
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*/
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#define READ 3
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#define READ_COMMAND {READ, 0 , 0 , 0 , 0}
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#define READ_OFFSET_TO_LENGTH 3 //cmd dmy dmy lh ll
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#define WRITE 1
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#define HI(value) (((value) & 0xFF00) >> 8)
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#define LO(value) ((value) & 0x00FF)
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#define SPI_HEADER_SIZE (5)
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/****************************************************************************
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* Public Types
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****************************************************************************/
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#ifdef CONFIG_CC3000_MT
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/* lock to serialize access to driver (SPI protocol is window size 1) */
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extern pthread_mutex_t g_cc3000_mut;
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/* This structure describes the state of one CC3000 driver instance */
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typedef struct cc3000_socket_ent
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{
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volatile int sd;
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long status;
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bool received_closed_event:1;
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bool emptied_and_remotely_closed:1;
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sem_t semwait;
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} cc3000_socket_ent;
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typedef struct cc3000_accept_ent
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{
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cc3000_socket_ent acc;
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struct sockaddr addr;
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socklen_t addrlen;
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} cc3000_accept_ent;
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#endif
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typedef enum
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{
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eSPI_STATE_POWERUP = 0,
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eSPI_STATE_INITIALIZED,
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eSPI_STATE_IDLE,
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eSPI_STATE_WRITE_WAIT_IRQ,
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eSPI_STATE_WRITE_PROCEED,
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eSPI_STATE_WRITE_DONE,
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eSPI_STATE_READ_IRQ,
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eSPI_STATE_READ_PROCEED,
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eSPI_STATE_READ_READY,
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} eDeviceStates;
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struct cc3000_dev_s
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{
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#ifdef CONFIG_CC3000_MULTIPLE
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FAR struct cc3000_dev_s *flink; /* Supports a singly linked list of drivers */
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#endif
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pthread_t workertid; /* Handle for the worker thread */
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uint8_t crefs; /* Number of times the device has been opened */
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uint8_t nwaiters; /* Number of threads waiting for CC3000 data */
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uint8_t minor; /* minor */
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sem_t devsem; /* Manages exclusive access to this structure */
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sem_t *wrkwaitsem; /* Suspend and resume the delivery of messages */
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sem_t waitsem; /* Used to wait for the availability of data */
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sem_t irqsem; /* Used to signal irq from cc3000 */
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sem_t readysem; /* Used to wait for Ready Condition from the cc3000 */
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FAR struct cc3000_config_s *config; /* Board configuration data */
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FAR struct spi_dev_s *spi; /* Saved SPI driver instance */
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mqd_t queue; /* For unsolicited data delivery */
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eDeviceStates state; /* The device state */
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cc3000_buffer_desc rx_buffer;
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ssize_t rx_buffer_max_len;
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/* The following is a list if socket structures of threads waiting
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* long operations to finish;
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*/
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#ifdef CONFIG_CC3000_MT
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pthread_t selecttid; /* Handle for the select thread */
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sem_t selectsem; /* Used to sleep the select thread */
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cc3000_socket_ent sockets[CONFIG_WL_MAX_SOCKETS];
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cc3000_accept_ent accepting_socket;
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#endif
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/* The following is a list if poll structures of threads waiting for
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* driver events. The 'struct pollfd' reference for each open is also
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* retained in the f_priv field of the 'struct file'.
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*/
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#ifndef CONFIG_DISABLE_POLL
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struct pollfd *fds[CONFIG_CC3000_NPOLLWAITERS];
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#endif
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#if defined(CONFIG_DEBUG_FEATURES) && defined(CONFIG_CC3000_PROBES)
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long guard;
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#endif
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};
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/********************************************************************************************
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* Public Function Prototypes
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********************************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C" {
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#else
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#define EXTERN extern
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#endif
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static inline void cc3000_lib_lock(void)
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{
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#ifdef CONFIG_CC3000_MT
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int status = pthread_mutex_lock(&g_cc3000_mut);
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DEBUGASSERT(status == 0);
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UNUSED(status);
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#endif
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}
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static inline void cc3000_lib_unlock(void)
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{
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#ifdef CONFIG_CC3000_MT
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int status = pthread_mutex_unlock(&g_cc3000_mut);
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DEBUGASSERT(status == 0);
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UNUSED(status);
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#endif
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}
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int cc3000_do_accept(int sockfd, struct sockaddr *addr, socklen_t *addrlen);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __DRIVERS_WIRELESS_WIRELESS_CC3000_H */
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