Driver for CC3000 Wi-Fi module

Dependencies:   NVIC_set_all_priorities

Dependents:   CC3000_Simple_Socket Wi-Go_IOT_Demo

Information

The current code has been reworked to a full object oriented application and contains an mbed socket compatible API.

CC3000 Wi-Fi module library

Info

This is the low level driver for TI's SimpleLink CC3000 device.
Port from Avnet's Wi-Go KEIL code (based on TI's CC3000 code).
Special thanks to Jim Carver from Avnet for providing the Wi-Go board and for his assistance.

Differences with TI's original code

The code functionality stays exactly the same.
In order to make it easier to use the code, following changes were made :

  • Addition of a tool to shift all IRQ priorities to a lower level since it is very important to keep the SPI handler at the highest system priority, the WLAN interrupt the second highest and all other system interrupts at a lower priority, so their handlers can be preempted by the CC3000 interrupts.
  • Addition of low level I/O controls and conditional compiler controls in cc3000_common.h.
  • CC3000 initialisation, pin declarations, SPI and WLAN irq priorities are set in Init_HostDriver , we need to call this function at the start of the main function.
  • The SPI and HCI code are joined into one file.
  • The include list has been rearranged - Only #include "wlan.h" is needed in the user API.
  • Part of the CC3000's user eeprom memory is used to store additional info (52 bytes in NVMEM_USER_FILE_1):
# bytesDescriptionInfo
1First time config parameterUseful when connecting
2Firmware updater versionused with the Firmware update tool
2Service Pack versionused with the Firmware update tool
3Driver Versionused with the Firmware update tool
3Firmware Versionused with the Firmware update tool
1CIK validation (Client Interface Key)
40CIK data (Client Interface Key)used with the exosite

Using the Library

A user API is needed to access the CC3000 functions.
Examples:

Using the library with other processors

cc3000_common.cpp loads the irq tool for all targets:
All current mbed targets are supported by this library.

#include "NVIC_set_all_priorities.h"


All low level settings that need to change are available in cc3000_common.h

//*****************************************************************************
//              PIN CONTROLS & COMPILE CONTROLS
//*****************************************************************************
// Compiler control
#define CC3000_UNENCRYPTED_SMART_CONFIG   // No encryption
//#define CC3000_TINY_DRIVER                // Driver for small memory model CPUs

//Interrupt controls
#define NVIC_ALL_IRQ        NVIC_set_all_irq_priorities(3);         // Set ALL interrupt priorities to level 3
#define NVIC_SPI_IRQ        NVIC_SetPriority(SPI0_IRQn, 0x0);       // Wi-Fi SPI interrupt must be higher priority than SysTick
#define NVIC_PORT_IRQ       NVIC_SetPriority(PORTA_IRQn, 0x1);
#define NVIC_SYSTICK_IRQ    NVIC_SetPriority(SysTick_IRQn, 0x2);    // SysTick set to lower priority than Wi-Fi SPI bus interrupt
//#define NVIC_ADC_IRQ        NVIC_SetPriority(ADC0_IRQn, 0x3);       // ADC is the lowest of all

// Wlan controls
#define WLAN_ISF_PCR        PORTA->PCR[16]
#define WLAN_ISF_ISFR       PORTA->ISFR
#define WLAN_ISF_MASK       (1<<16)

#define WLAN_ASSERT_CS      wlan_cs = 0;   //CS : active low
#define WLAN_DEASSERT_CS    wlan_cs = 1;

#define WLAN_ASSERT_EN      wlan_en = 1;   //EN : active high
#define WLAN_DEASSERT_EN    wlan_en = 0;

#define WLAN_READ_IRQ       wlan_int

#define WLAN_ENABLE_IRQ     wlan_int.fall(&WLAN_IRQHandler);
#define WLAN_DISABLE_IRQ    wlan_int.fall(NULL);

#define WLAN_IRQ_PIN_CREATE         InterruptIn wlan_int (PTA16);
#define WLAN_EN_PIN_CREATE          DigitalOut  wlan_en  (PTA13);
#define WLAN_CS_PIN_CREATE          DigitalOut  wlan_cs  (PTD0);
#define WLAN_SPI_PORT_CREATE        SPI wlan(PTD2, PTD3, PTC5); // mosi, miso, sclk

#define WLAN_SPI_PORT_INIT          wlan.format(8,1);
#define WLAN_SPI_SET_FREQ           wlan.frequency(12000000);
#define WLAN_SPI_SET_IRQ_HANDLER    wlan_int.fall(&WLAN_IRQHandler);

#define WLAN_SPI_WRITE              wlan.write(*data++);
#define WLAN_SPI_READ               wlan.write(0x03);          // !! DO NOT MODIFY the 0x03 parameter (CC3000 will not respond).

API documentation

Due to a little problem with the links on the mbed site, the API documentation is not directly accessible (will be solved in a next release).
Currently, it is only accessible by adding modules.html to the API doc link: http://mbed.org/users/frankvnk/code/CC3000_Hostdriver/docs/tip/modules.html

evnt_handler.cpp

Committer:
frankvnk
Date:
2013-07-13
Revision:
3:3818c9c7b14e
Parent:
2:f1d50c7f8bdb
Child:
4:d8255a5aad46

File content as of revision 3:3818c9c7b14e:

/*****************************************************************************
*
*  evnt_handler.c  - CC3000 Host Driver Implementation.
*  Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
*
*  Redistribution and use in source and binary forms, with or without
*  modification, are permitted provided that the following conditions
*  are met:
*
*    Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
*
*    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.
*
*    Neither the name of Texas Instruments Incorporated 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.
*
*****************************************************************************/
//*****************************************************************************
//
//! \addtogroup evnt_handler_api
//! @{
//
//******************************************************************************

//******************************************************************************
//                  INCLUDE FILES
//******************************************************************************

#include "evnt_handler.h"

//*****************************************************************************
//                  COMMON DEFINES
//*****************************************************************************

#define FLOW_CONTROL_EVENT_HANDLE_OFFSET        (0)
#define FLOW_CONTROL_EVENT_BLOCK_MODE_OFFSET    (1)
#define FLOW_CONTROL_EVENT_FREE_BUFFS_OFFSET    (2)
#define FLOW_CONTROL_EVENT_SIZE                 (4)

#define BSD_RSP_PARAMS_SOCKET_OFFSET            (0)
#define BSD_RSP_PARAMS_STATUS_OFFSET            (4)

#define GET_HOST_BY_NAME_RETVAL_OFFSET          (0)
#define GET_HOST_BY_NAME_ADDR_OFFSET            (4)

#define ACCEPT_SD_OFFSET                        (0)
#define ACCEPT_RETURN_STATUS_OFFSET             (4)
#define ACCEPT_ADDRESS__OFFSET                  (8)

#define SL_RECEIVE_SD_OFFSET                    (0)
#define SL_RECEIVE_NUM_BYTES_OFFSET             (4)
#define SL_RECEIVE__FLAGS__OFFSET               (8)


#define SELECT_STATUS_OFFSET                    (0)
#define SELECT_READFD_OFFSET                    (4)
#define SELECT_WRITEFD_OFFSET                   (8)
#define SELECT_EXFD_OFFSET                      (12)


#define NETAPP_IPCONFIG_IP_OFFSET               (0)
#define NETAPP_IPCONFIG_SUBNET_OFFSET           (4)
#define NETAPP_IPCONFIG_GW_OFFSET               (8)
#define NETAPP_IPCONFIG_DHCP_OFFSET             (12)
#define NETAPP_IPCONFIG_DNS_OFFSET              (16)
#define NETAPP_IPCONFIG_MAC_OFFSET              (20)
#define NETAPP_IPCONFIG_SSID_OFFSET             (26)

#define NETAPP_IPCONFIG_IP_LENGTH               (4)
#define NETAPP_IPCONFIG_MAC_LENGTH              (6)
#define NETAPP_IPCONFIG_SSID_LENGTH             (32)


#define NETAPP_PING_PACKETS_SENT_OFFSET         (0)
#define NETAPP_PING_PACKETS_RCVD_OFFSET         (4)
#define NETAPP_PING_MIN_RTT_OFFSET              (8)
#define NETAPP_PING_MAX_RTT_OFFSET              (12)
#define NETAPP_PING_AVG_RTT_OFFSET              (16)

#define GET_SCAN_RESULTS_TABlE_COUNT_OFFSET              (0)
#define GET_SCAN_RESULTS_SCANRESULT_STATUS_OFFSET        (4)
#define GET_SCAN_RESULTS_ISVALID_TO_SSIDLEN_OFFSET       (8)
#define GET_SCAN_RESULTS_FRAME_TIME_OFFSET               (10)
#define GET_SCAN_RESULTS_SSID_MAC_LENGTH                 (38)



//*****************************************************************************
//                  GLOBAL VARAIABLES
//*****************************************************************************

unsigned long socket_active_status = SOCKET_STATUS_INIT_VAL; 


//*****************************************************************************
//            Prototypes for the static functions
//*****************************************************************************

static long hci_event_unsol_flowcontrol_handler(char *pEvent);

static void update_socket_active_status(char *resp_params);


//*****************************************************************************
//
//!  hci_unsol_handle_patch_request
//!
//!  @param  event_hdr  event header
//!
//!  @return none
//!
//!  @brief   Handle unsolicited event from type patch request
//
//*****************************************************************************
void hci_unsol_handle_patch_request(char *event_hdr)
{
    char *params = (char *)(event_hdr) + HCI_EVENT_HEADER_SIZE;
    unsigned long ucLength = 0;
    char *patch;
    switch (*params)
    {
    case HCI_EVENT_PATCHES_DRV_REQ:
        
        if (tSLInformation.sDriverPatches)
        {
            patch = tSLInformation.sDriverPatches(&ucLength);
            
            if (patch)
            {
// -----------------------------  printf("HCI_EVENT_PATCHES_DRV_REQ\n");
                hci_patch_send(HCI_EVENT_PATCHES_DRV_REQ, tSLInformation.pucTxCommandBuffer, patch, ucLength);
                return;
            }
        }
        
        // Send 0 length Patches response event
// -----------------------------  printf("HCI_EVENT_PATCHES_DRV_REQ - NULL\n");
        hci_patch_send(HCI_EVENT_PATCHES_DRV_REQ, tSLInformation.pucTxCommandBuffer, 0, 0);
        break;
        
    case HCI_EVENT_PATCHES_FW_REQ:
        
        if (tSLInformation.sFWPatches)
        {
            patch = tSLInformation.sFWPatches(&ucLength);
            
            // Build and send a patch
            if (patch)
            {
// -----------------------------  printf("HCI_EVENT_PATCHES_FW_REQ\n");
                hci_patch_send(HCI_EVENT_PATCHES_FW_REQ, tSLInformation.pucTxCommandBuffer, patch, ucLength);
                return;
            }
        }
        
        // Send 0 length Patches response event
// -----------------------------  printf("HCI_EVENT_PATCHES_FW_REQ - NULL\n");
//printf("HEPFR  %04X\n",HCI_EVENT_PATCHES_FW_REQ);
//printf("pucTCB %04X\n",*tSLInformation.pucTxCommandBuffer);
        hci_patch_send(HCI_EVENT_PATCHES_FW_REQ, tSLInformation.pucTxCommandBuffer, 0, 0);
//printf("HEPFR-E\n");
        break;
        
    case HCI_EVENT_PATCHES_BOOTLOAD_REQ:
        
        if (tSLInformation.sBootLoaderPatches)
        {
// -----------------------------  printf("HCI_EVENT_PATCHES_BOOTLOAD_REQ\n");
            patch = tSLInformation.sBootLoaderPatches(&ucLength);
            if (patch)
            {
                hci_patch_send(HCI_EVENT_PATCHES_BOOTLOAD_REQ, tSLInformation.pucTxCommandBuffer, patch, ucLength);
                return;
            }
        }
        
        // Send 0 length Patches response event
// -----------------------------  printf("HCI_EVENT_PATCHES_BOOTLOAD_REQ - NULL\n");
        hci_patch_send(HCI_EVENT_PATCHES_BOOTLOAD_REQ, tSLInformation.pucTxCommandBuffer, 0, 0);
        break;
    }
}



//*****************************************************************************
//
//!  hci_event_handler
//!
//!  @param  pRetParams     incoming data buffer
//!  @param  from           from information (in case of data received)
//!  @param  fromlen        from information length (in case of data received)
//!
//!  @return         none
//!
//!  @brief          Parse the incoming events packets and issues corresponding
//!                  event handler from global array of handlers pointers
//
//*****************************************************************************

    
unsigned char *hci_event_handler(void *pRetParams, unsigned char *from, unsigned char *fromlen)
{
    unsigned char *pucReceivedData, ucArgsize;
    unsigned short usLength;
    unsigned char *pucReceivedParams;
    unsigned short usReceivedEventOpcode = 0;
    unsigned long retValue32;
    unsigned char * RecvParams;
    unsigned char *RetParams;
//    unsigned long tout_cnt = 0;
    while (1)
    {
        if (tSLInformation.usEventOrDataReceived != 0)
        {                
            pucReceivedData = (tSLInformation.pucReceivedData);
// -----------------------------  if((*((char *)(pucReceivedData) + HCI_EVENT_HEADER_SIZE)) == HCI_EVENT_PATCHES_FW_REQ)
// -----------------------------  printf("%02X\n",tSLInformation.usEventOrDataReceived);
// -----------------------------  printf("pucReceivedData : %04X\n",*pucReceivedData);

            if (*pucReceivedData == HCI_TYPE_EVNT)
            {
                // Event Received
//printf("STREAM - usReceivedEventOpcode : %04X\n",usReceivedEventOpcode);
                STREAM_TO_UINT16((char *)pucReceivedData, HCI_EVENT_OPCODE_OFFSET,usReceivedEventOpcode);
                pucReceivedParams = pucReceivedData + HCI_EVENT_HEADER_SIZE;        
//printf("STREAM - usReceivedEventOpcode : %04X\n",usReceivedEventOpcode);
                RecvParams = pucReceivedParams;
                RetParams = (unsigned char *)pRetParams;
                
                // In case unsolicited event received - here the handling finished
                if (hci_unsol_event_handler((char *)pucReceivedData) == 0)
                {
                    STREAM_TO_UINT8(pucReceivedData, HCI_DATA_LENGTH_OFFSET, usLength);
                    
                    switch(usReceivedEventOpcode)
                    {        
                    case HCI_CMND_READ_BUFFER_SIZE:
                        {
                            STREAM_TO_UINT8((char *)pucReceivedParams, 0, tSLInformation.usNumberOfFreeBuffers);
                            STREAM_TO_UINT16((char *)pucReceivedParams, 1, tSLInformation.usSlBufferLength);
                        }
                        break;
                        
                    case HCI_CMND_WLAN_CONFIGURE_PATCH:
                    case HCI_NETAPP_DHCP:
                    case HCI_NETAPP_PING_SEND:
                    case HCI_NETAPP_PING_STOP:
                    case HCI_NETAPP_ARP_FLUSH:
                    case HCI_NETAPP_SET_DEBUG_LEVEL:
                    case HCI_NETAPP_SET_TIMERS:
                    case HCI_EVNT_NVMEM_READ:
                    case HCI_EVNT_NVMEM_CREATE_ENTRY:
                    case HCI_CMND_NVMEM_WRITE_PATCH:
                    case HCI_NETAPP_PING_REPORT:
                    case HCI_EVNT_MDNS_ADVERTISE:
                        
                        STREAM_TO_UINT8(pucReceivedData, HCI_EVENT_STATUS_OFFSET, *(unsigned char *)pRetParams);
                        break;
                        
                    case HCI_CMND_SETSOCKOPT:
                    case HCI_CMND_WLAN_CONNECT:
                    case HCI_CMND_WLAN_IOCTL_STATUSGET:
                    case HCI_EVNT_WLAN_IOCTL_ADD_PROFILE:
                    case HCI_CMND_WLAN_IOCTL_DEL_PROFILE:
                    case HCI_CMND_WLAN_IOCTL_SET_CONNECTION_POLICY:
                    case HCI_CMND_WLAN_IOCTL_SET_SCANPARAM:
                    case HCI_CMND_WLAN_IOCTL_SIMPLE_CONFIG_START:
                    case HCI_CMND_WLAN_IOCTL_SIMPLE_CONFIG_STOP:
                    case HCI_CMND_WLAN_IOCTL_SIMPLE_CONFIG_SET_PREFIX:
                    case HCI_CMND_EVENT_MASK:
                    case HCI_EVNT_WLAN_DISCONNECT:
                    case HCI_EVNT_SOCKET:
                    case HCI_EVNT_BIND:
                    case HCI_CMND_LISTEN:
                    case HCI_EVNT_CLOSE_SOCKET:
                    case HCI_EVNT_CONNECT:
                    case HCI_EVNT_NVMEM_WRITE:
                        
                        STREAM_TO_UINT32((char *)pucReceivedParams,0, *(unsigned long *)pRetParams);
                        break;
                        
                    case HCI_EVNT_READ_SP_VERSION:
                        
                        STREAM_TO_UINT8(pucReceivedData, HCI_EVENT_STATUS_OFFSET, *(unsigned char *)pRetParams);
                        pRetParams = ((char *)pRetParams) + 1;
                        STREAM_TO_UINT32((char *)pucReceivedParams, 0, retValue32);
                        UINT32_TO_STREAM((unsigned char *)pRetParams, retValue32);                
                        break;
                        
                    case HCI_EVNT_BSD_GETHOSTBYNAME:
                        
                        STREAM_TO_UINT32((char *)pucReceivedParams,GET_HOST_BY_NAME_RETVAL_OFFSET,*(unsigned long *)pRetParams);
                        pRetParams = ((char *)pRetParams) + 4;
                        STREAM_TO_UINT32((char *)pucReceivedParams,GET_HOST_BY_NAME_ADDR_OFFSET,*(unsigned long *)pRetParams);                    
                        break;
                        
                    case HCI_EVNT_ACCEPT:
                        {
                            STREAM_TO_UINT32((char *)pucReceivedParams,ACCEPT_SD_OFFSET,*(unsigned long *)pRetParams);
                            pRetParams = ((char *)pRetParams) + 4;
                            STREAM_TO_UINT32((char *)pucReceivedParams,ACCEPT_RETURN_STATUS_OFFSET,*(unsigned long *)pRetParams);
                            pRetParams = ((char *)pRetParams) + 4; 
                            
                            //This argument returns in network order
                            memcpy((unsigned char *)pRetParams, pucReceivedParams + ACCEPT_ADDRESS__OFFSET, sizeof(sockaddr));    
                            break;
                        }
                        
                    case HCI_EVNT_RECV:
                    case HCI_EVNT_RECVFROM:
                        {
                            STREAM_TO_UINT32((char *)pucReceivedParams,SL_RECEIVE_SD_OFFSET ,*(unsigned long *)pRetParams);
                            pRetParams = ((char *)pRetParams) + 4;
                            STREAM_TO_UINT32((char *)pucReceivedParams,SL_RECEIVE_NUM_BYTES_OFFSET,*(unsigned long *)pRetParams);
                            pRetParams = ((char *)pRetParams) + 4;
                            STREAM_TO_UINT32((char *)pucReceivedParams,SL_RECEIVE__FLAGS__OFFSET,*(unsigned long *)pRetParams);
                            
                            if(((tBsdReadReturnParams *)pRetParams)->iNumberOfBytes == ERROR_SOCKET_INACTIVE)
                            {
                                set_socket_active_status(((tBsdReadReturnParams *)pRetParams)->iSocketDescriptor,SOCKET_STATUS_INACTIVE);
                            }
                            break;
                        }
                        
                    case HCI_EVNT_SEND:
                    case HCI_EVNT_SENDTO:
                        {
                            STREAM_TO_UINT32((char *)pucReceivedParams,SL_RECEIVE_SD_OFFSET ,*(unsigned long *)pRetParams);
                            pRetParams = ((char *)pRetParams) + 4;
                            STREAM_TO_UINT32((char *)pucReceivedParams,SL_RECEIVE_NUM_BYTES_OFFSET,*(unsigned long *)pRetParams);
                            pRetParams = ((char *)pRetParams) + 4;
                            
                            break;
                        }

                    case HCI_EVNT_SELECT:
                        { 
                            STREAM_TO_UINT32((char *)pucReceivedParams,SELECT_STATUS_OFFSET,*(unsigned long *)pRetParams);
                            pRetParams = ((char *)pRetParams) + 4;
                            STREAM_TO_UINT32((char *)pucReceivedParams,SELECT_READFD_OFFSET,*(unsigned long *)pRetParams);
                            pRetParams = ((char *)pRetParams) + 4;
                            STREAM_TO_UINT32((char *)pucReceivedParams,SELECT_WRITEFD_OFFSET,*(unsigned long *)pRetParams);
                            pRetParams = ((char *)pRetParams) + 4;
                            STREAM_TO_UINT32((char *)pucReceivedParams,SELECT_EXFD_OFFSET,*(unsigned long *)pRetParams);            
                            break;
                        }
                        
                    case HCI_CMND_GETSOCKOPT:
                        
                        STREAM_TO_UINT8(pucReceivedData, HCI_EVENT_STATUS_OFFSET,((tBsdGetSockOptReturnParams *)pRetParams)->iStatus);
                        //This argument returns in network order
                        memcpy((unsigned char *)pRetParams, pucReceivedParams, 4);
                        break;
                        
                    case HCI_CMND_WLAN_IOCTL_GET_SCAN_RESULTS:
                        
                        STREAM_TO_UINT32((char *)pucReceivedParams,GET_SCAN_RESULTS_TABlE_COUNT_OFFSET,*(unsigned long *)pRetParams);
                        pRetParams = ((char *)pRetParams) + 4;                       
                        STREAM_TO_UINT32((char *)pucReceivedParams,GET_SCAN_RESULTS_SCANRESULT_STATUS_OFFSET,*(unsigned long *)pRetParams);
                        pRetParams = ((char *)pRetParams) + 4;                                                                            
                        STREAM_TO_UINT16((char *)pucReceivedParams,GET_SCAN_RESULTS_ISVALID_TO_SSIDLEN_OFFSET,*(unsigned long *)pRetParams);
                        pRetParams = ((char *)pRetParams) + 2;                       
                        STREAM_TO_UINT16((char *)pucReceivedParams,GET_SCAN_RESULTS_FRAME_TIME_OFFSET,*(unsigned long *)pRetParams);
                        pRetParams = ((char *)pRetParams) + 2;  
                        memcpy((unsigned char *)pRetParams, (char *)(pucReceivedParams + GET_SCAN_RESULTS_FRAME_TIME_OFFSET + 2), GET_SCAN_RESULTS_SSID_MAC_LENGTH);    
                        break;
                        
                    case HCI_CMND_SIMPLE_LINK_START:
                        break;
                        
                    case HCI_NETAPP_IPCONFIG:
                        
                        //Read IP address
                        STREAM_TO_STREAM(RecvParams,RetParams,NETAPP_IPCONFIG_IP_LENGTH);
                        RecvParams += 4;
                        
                        //Read subnet
                        STREAM_TO_STREAM(RecvParams,RetParams,NETAPP_IPCONFIG_IP_LENGTH);
                        RecvParams += 4;
                        
                        //Read default GW
                        STREAM_TO_STREAM(RecvParams,RetParams,NETAPP_IPCONFIG_IP_LENGTH);
                        RecvParams += 4;
                        
                        //Read DHCP server                                              
                        STREAM_TO_STREAM(RecvParams,RetParams,NETAPP_IPCONFIG_IP_LENGTH);
                        RecvParams += 4;
                        
                        //Read DNS server                                           
                        STREAM_TO_STREAM(RecvParams,RetParams,NETAPP_IPCONFIG_IP_LENGTH);
                        RecvParams += 4;
                        
                        //Read Mac address                                
                        STREAM_TO_STREAM(RecvParams,RetParams,NETAPP_IPCONFIG_MAC_LENGTH);
                        RecvParams += 6;
                        
                        //Read SSID
                        STREAM_TO_STREAM(RecvParams,RetParams,NETAPP_IPCONFIG_SSID_LENGTH);
    
                    }
                }
// -----------------------------  printf("  REO : %04X\n",usReceivedEventOpcode);
// -----------------------------  printf("RxREO : %04X\n",tSLInformation.usRxEventOpcode);
                
                if (usReceivedEventOpcode == tSLInformation.usRxEventOpcode)
                {
                    tSLInformation.usRxEventOpcode = 0;
                }
            }
            else
            {                
                pucReceivedParams = pucReceivedData;
                STREAM_TO_UINT8((char *)pucReceivedData, HCI_PACKET_ARGSIZE_OFFSET, ucArgsize);
                
                STREAM_TO_UINT16((char *)pucReceivedData, HCI_PACKET_LENGTH_OFFSET, usLength);

                // Data received: note that the only case where from and from length 
                // are not null is in recv from, so fill the args accordingly
                if (from)
                {
                    STREAM_TO_UINT32((char *)(pucReceivedData + HCI_DATA_HEADER_SIZE), BSD_RECV_FROM_FROMLEN_OFFSET, *(unsigned long *)fromlen);
                    memcpy(from, (pucReceivedData + HCI_DATA_HEADER_SIZE + BSD_RECV_FROM_FROM_OFFSET) ,*fromlen);
                }
                
                memcpy(pRetParams, pucReceivedParams + HCI_DATA_HEADER_SIZE + ucArgsize, usLength - ucArgsize);
                
                tSLInformation.usRxDataPending = 0;
            }
        
            tSLInformation.usEventOrDataReceived = 0;
            
            SpiResumeSpi();
            
            // Since we are going to TX - we need to handle this event after the ResumeSPi since we need interrupts
            if ((*pucReceivedData == HCI_TYPE_EVNT) && (usReceivedEventOpcode == HCI_EVNT_PATCHES_REQ))
            {
// -----------------------------  printf("HUHPR\n");

                hci_unsol_handle_patch_request((char *)pucReceivedData);
//int we = wlan_en;
//int wc = wlan_cs;
//int wi = tSLInformation.ReadWlanInterruptPin(); //wlan_int
//printf("%02X %02X %02X\n",we, wc, wi);
//printf("%02X %02X \n",tSLInformation.usRxEventOpcode,tSLInformation.usRxDataPending);
            }
//if((*((char *)(pucReceivedData) + HCI_EVENT_HEADER_SIZE)) == HCI_EVENT_PATCHES_FW_REQ)
//printf("%02X\n",tSLInformation.usEventOrDataReceived);
//printf("%02X %02X\n",tSLInformation.usRxEventOpcode,tSLInformation.usRxDataPending);
//Re-enable printf in IRQ
//tSLInformation.usEventOrDataReceived is at least once = 1 for all previous calls, why not for HCI_EVENT_PATCHES_FW_REQ?
//compare with original code (uVision - add printfs in evnt_handler and try to find out where/how tSLInformation.usEventOrDataReceived is modified)
//call hci_unsolicited_event_handler in hci_unsol_handle_patch_request??
//try no-systick modifs in Jim's V3.1??
//Is the latest original TI code working??
            if ((tSLInformation.usRxEventOpcode == 0) && (tSLInformation.usRxDataPending == 0))
            {
// -----------------------------  printf("EXIT\n");
                return NULL;
            }    
/*
//Check if interrupts are still active :
//When we enable this code, an interrupt is detected - read back = R 10 : 02 00 FF 00 00 00 00 00 00 00
//                                                     should be = R 10 : 02 00 00 00 05 04 00 40 01 00
//Perhaps the last write (HCI_EVENT_PATCHES_FW_REQ) was incorrect?
if(((*((char *)(pucReceivedData) + HCI_EVENT_HEADER_SIZE)) == HCI_EVENT_PATCHES_FW_REQ) && (wlan_cs == 1))
{
wlan_cs = 0;
}*/
        }

//if(*((char *)(pucReceivedData) + HCI_EVENT_HEADER_SIZE) == HCI_EVENT_PATCHES_FW_REQ) && ()
/*tout_cnt++;
if(((*((char *)(pucReceivedData) + HCI_EVENT_HEADER_SIZE)) == HCI_EVENT_PATCHES_FW_REQ) && (tout_cnt > 25000000))
{
    printf("ERROR\n");
    int we = wlan_en;
    int wc = wlan_cs;
    int wi = tSLInformation.ReadWlanInterruptPin(); //wlan_int
    printf("tSLInformation.usRxEventOpcode : %04X\n",tSLInformation.usRxEventOpcode);
    printf("tSLInformation.usRxDataPending : %u\n",tSLInformation.usRxDataPending);
    printf("WLAN int pin : %u\n",wi);
    printf("WLAN en  pin : %u\n",we);
    printf("WLAN cs  pin : %u\n",wc);
    printf("*(pucReceivedData + HCI_EVENT_HEADER_SIZE) : %04X\n",*(pucReceivedData + HCI_EVENT_HEADER_SIZE));
    printf("usReceivedEventOpcode : %04X\n",usReceivedEventOpcode);
    printf("pucReceivedData : %04X\n",*pucReceivedData);
    printf("HCI_EVENT_HEADER_SIZE    : %02X\n",HCI_EVENT_HEADER_SIZE);
    printf("HCI_EVENT_PATCHES_FW_REQ : %02X\n",HCI_EVENT_PATCHES_FW_REQ);
    printf("HCI_TYPE_EVNT            : %02X\n",HCI_TYPE_EVNT);
    printf("HCI_EVNT_PATCHES_REQ     : %02X\n\n",HCI_EVNT_PATCHES_REQ);
    while(1){}
}*/
//printf(".");
    }
}

//*****************************************************************************
//
//!  hci_unsol_event_handler
//!
//!  @param  event_hdr   event header
//!
//!  @return             1 if event supported and handled
//!                      0 if event is not supported
//!
//!  @brief              Handle unsolicited events
//
//*****************************************************************************
long hci_unsol_event_handler(char *event_hdr)
{
    char * data = NULL;
    long event_type;
    unsigned long NumberOfReleasedPackets;
    unsigned long NumberOfSentPackets;
    
    STREAM_TO_UINT16(event_hdr, HCI_EVENT_OPCODE_OFFSET,event_type);
    
    if (event_type & HCI_EVNT_UNSOL_BASE)
    {
        switch(event_type)
        {
    
        case HCI_EVNT_DATA_UNSOL_FREE_BUFF:
            {
                hci_event_unsol_flowcontrol_handler(event_hdr);
                
                NumberOfReleasedPackets = tSLInformation.NumberOfReleasedPackets;
                NumberOfSentPackets = tSLInformation.NumberOfSentPackets;
                                
                if (NumberOfReleasedPackets == NumberOfSentPackets)
                {
                    if (tSLInformation.InformHostOnTxComplete)
                    {
                        tSLInformation.sWlanCB(HCI_EVENT_CC3000_CAN_SHUT_DOWN, NULL, 0);
                    }
                }                
                return 1;
                
            }
        }
    }
    
    if(event_type & HCI_EVNT_WLAN_UNSOL_BASE)
    {           
        switch(event_type)
        {
        case HCI_EVNT_WLAN_KEEPALIVE:
        case HCI_EVNT_WLAN_UNSOL_CONNECT:
        case HCI_EVNT_WLAN_UNSOL_DISCONNECT:
        case HCI_EVNT_WLAN_UNSOL_INIT:
        case HCI_EVNT_WLAN_ASYNC_SIMPLE_CONFIG_DONE:
            
            if( tSLInformation.sWlanCB )
            {
                tSLInformation.sWlanCB(event_type, 0, 0);
            }
            break;
            
        case HCI_EVNT_WLAN_UNSOL_DHCP:
            {
                tNetappDhcpParams params;
                unsigned char *recParams = (unsigned char *)&params;            
                data = (char*)(event_hdr) + HCI_EVENT_HEADER_SIZE;
                
                //Read IP address
                STREAM_TO_STREAM(data,recParams,NETAPP_IPCONFIG_IP_LENGTH);
                data += 4;
                //Read subnet
                STREAM_TO_STREAM(data,recParams,NETAPP_IPCONFIG_IP_LENGTH);
                data += 4;
                //Read default GW
                STREAM_TO_STREAM(data,recParams,NETAPP_IPCONFIG_IP_LENGTH); 
                data += 4;
                //Read DHCP server  
                STREAM_TO_STREAM(data,recParams,NETAPP_IPCONFIG_IP_LENGTH);     
                data += 4;
                //Read DNS server  
                STREAM_TO_STREAM(data,recParams,NETAPP_IPCONFIG_IP_LENGTH); 
                    
                if( tSLInformation.sWlanCB )
                {
                    tSLInformation.sWlanCB(event_type, (char *)&params, sizeof(params));
                }
            }
            break;
            
        case HCI_EVNT_WLAN_ASYNC_PING_REPORT:
            {
                netapp_pingreport_args_t params;            
                data = (char*)(event_hdr) + HCI_EVENT_HEADER_SIZE;            
                STREAM_TO_UINT32(data, NETAPP_PING_PACKETS_SENT_OFFSET, params.packets_sent);            
                STREAM_TO_UINT32(data, NETAPP_PING_PACKETS_RCVD_OFFSET, params.packets_received);            
                STREAM_TO_UINT32(data, NETAPP_PING_MIN_RTT_OFFSET, params.min_round_time);        
                STREAM_TO_UINT32(data, NETAPP_PING_MAX_RTT_OFFSET, params.max_round_time);    
                STREAM_TO_UINT32(data, NETAPP_PING_AVG_RTT_OFFSET, params.avg_round_time);
                
                if( tSLInformation.sWlanCB )
                {
                    tSLInformation.sWlanCB(event_type, (char *)&params, sizeof(params));
                }
            }
            break;
        case HCI_EVNT_BSD_TCP_CLOSE_WAIT:
            {
                if( tSLInformation.sWlanCB )
                {
                    tSLInformation.sWlanCB(event_type, NULL, 0);
                }
            }
            break;
            
        //'default' case which means "event not supported"     
        default: 
            return (0);
        }
        return(1);
    }
    
    if ((event_type == HCI_EVNT_SEND) || (event_type == HCI_EVNT_SENDTO) || (event_type == HCI_EVNT_WRITE))
    {
        // The only synchronous event that can come from SL device in form of 
        // command complete is "Command Complete" on data sent, in case SL device 
        // was unable to transmit
        STREAM_TO_UINT8(event_hdr, HCI_EVENT_STATUS_OFFSET, tSLInformation.slTransmitDataError);
        update_socket_active_status(M_BSD_RESP_PARAMS_OFFSET(event_hdr));
        
        return (1);
    }
    
    return(0);
}

//*****************************************************************************
//
//!  hci_unsolicited_event_handler
//!
//!  @param None
//!
//!  @return         ESUCCESS if successful, EFAIL if an error occurred
//!
//!  @brief          Parse the incoming unsolicited event packets and issues 
//!                  corresponding event handler.
//
//*****************************************************************************
long hci_unsolicited_event_handler(void)
{
    unsigned long   res = 0;
    unsigned char *pucReceivedData;
// -----------------------------  printf("UEH\n");    
    if (tSLInformation.usEventOrDataReceived != 0)
    {
        pucReceivedData = (tSLInformation.pucReceivedData);
        
        if (*pucReceivedData == HCI_TYPE_EVNT)
        {            
            
            // In case unsolicited event received - here the handling finished
            if (hci_unsol_event_handler((char *)pucReceivedData) == 1)
            {
                
                // There was an unsolicited event received - we can release the buffer
                // and clean the event received 
                tSLInformation.usEventOrDataReceived = 0;
                
                res = 1;
                SpiResumeSpi();
            }
        }
    }
    return res;
}

//*****************************************************************************
//
//!  set_socket_active_status
//!
//!  @param Sd
//!     @param Status
//!  @return         none
//!
//!  @brief          Check if the socket ID and status are valid and set 
//!                  accordingly  the global socket status
//
//*****************************************************************************
void set_socket_active_status(long Sd, long Status)
{
    if(M_IS_VALID_SD(Sd) && M_IS_VALID_STATUS(Status))
    {
        socket_active_status &= ~(1 << Sd);      /* clean socket's mask */
        socket_active_status |= (Status << Sd); /* set new socket's mask */
    }
}


//*****************************************************************************
//
//!  hci_event_unsol_flowcontrol_handler
//!
//!  @param  pEvent  pointer to the string contains parameters for IPERF
//!  @return         ESUCCESS if successful, EFAIL if an error occurred
//!
//!  @brief  Called in case unsolicited event from type
//!          HCI_EVNT_DATA_UNSOL_FREE_BUFF has received.
//!                   Keep track on the number of packets transmitted and update the
//!                     number of free buffer in the SL device.
//
//*****************************************************************************
long hci_event_unsol_flowcontrol_handler(char *pEvent)
{
    
    long temp, value;
    unsigned short i;
    unsigned short  pusNumberOfHandles=0;
    char *pReadPayload;
    
    STREAM_TO_UINT16((char *)pEvent,HCI_EVENT_HEADER_SIZE,pusNumberOfHandles);
    pReadPayload = ((char *)pEvent + HCI_EVENT_HEADER_SIZE + sizeof(pusNumberOfHandles));    
    temp = 0;
    
    for(i = 0; i < pusNumberOfHandles ; i++)
    {
        STREAM_TO_UINT16(pReadPayload, FLOW_CONTROL_EVENT_FREE_BUFFS_OFFSET, value);
        temp += value;
        pReadPayload += FLOW_CONTROL_EVENT_SIZE;  
    }
    
    tSLInformation.usNumberOfFreeBuffers += temp;
    tSLInformation.NumberOfReleasedPackets += temp;
    
    return(ESUCCESS);
}

//*****************************************************************************
//
//!  get_socket_active_status
//!
//!  @param  Sd  Socket IS
//!  @return     Current status of the socket.   
//!
//!  @brief  Retrieve socket status
//
//*****************************************************************************

long get_socket_active_status(long Sd)
{
    if(M_IS_VALID_SD(Sd))
    {
        return (socket_active_status & (1 << Sd)) ? SOCKET_STATUS_INACTIVE : SOCKET_STATUS_ACTIVE;
    }
    return SOCKET_STATUS_INACTIVE;
}

//*****************************************************************************
//
//!  update_socket_active_status
//!
//!  @param  resp_params  Socket IS
//!  @return     Current status of the socket.   
//!
//!  @brief  Retrieve socket status
//
//*****************************************************************************
void update_socket_active_status(char *resp_params)
{
    long status, sd;
    
    STREAM_TO_UINT32(resp_params, BSD_RSP_PARAMS_SOCKET_OFFSET,sd);
    STREAM_TO_UINT32(resp_params, BSD_RSP_PARAMS_STATUS_OFFSET,status);
    
    if(ERROR_SOCKET_INACTIVE == status)
    {
        set_socket_active_status(sd, SOCKET_STATUS_INACTIVE);
    }
}


//*****************************************************************************
//
//!  SimpleLinkWaitEvent
//!
//!  @param  usOpcode      command operation code
//!  @param  pRetParams    command return parameters
//!
//!  @return               none
//!
//!  @brief                Wait for event, pass it to the hci_event_handler and
//!                        update the event opcode in a global variable.
//
//*****************************************************************************

void SimpleLinkWaitEvent(unsigned short usOpcode, void *pRetParams)
{
//printf("SLWE-I\n");
    // In the blocking implementation the control to caller will be returned only 
    // after the end of current transaction
    tSLInformation.usRxEventOpcode = usOpcode;
    hci_event_handler(pRetParams, 0, 0);
//printf("SLWE-E\n");
}

//*****************************************************************************
//
//!  SimpleLinkWaitData
//!
//!  @param  pBuf       data buffer
//!  @param  from       from information
//!  @param  fromlen    from information length
//!
//!  @return               none
//!
//!  @brief                Wait for data, pass it to the hci_event_handler
//!                        and update in a global variable that there is 
//!                           data to read.
//
//*****************************************************************************

void 
SimpleLinkWaitData(unsigned char *pBuf, unsigned char *from, unsigned char *fromlen)
{
    // In the blocking implementation the control to caller will be returned only 
    // after the end of current transaction, i.e. only after data will be received
    tSLInformation.usRxDataPending = 1;
    hci_event_handler(pBuf, from, fromlen);
}

//*****************************************************************************
//
// Close the Doxygen group.
//! @}
//
//*****************************************************************************