ArduinoGalileo+CC3000测试wifi程序出现卡死现象，跳不出while循环

硬件:ArduinoGalileo+CC3000

测试Galileo_CC3000_Connecter程序

在开始初始化时

void Initialize(void)
{

    unsigned char fancyBuffer[MAC_ADDR_LEN];

    if (isInitialized) {
        Serial.println("CC3000 already initialized. Shutting down and restarting…");
        wlan_stop();
        delay(1000);
        }

    Serial.println("Initializing CC3000…");
    CC3000_Init();
    Serial.println("  CC3000 init complete.");

    if (nvmem_read_sp_version(fancyBuffer)==0) {
        Serial.print("  Firmware version is: ");
        Serial.print(fancyBuffer[0], DEC);
        Serial.print(".");
        Serial.println(fancyBuffer[1], DEC);
        }
    else {
        Serial.println("Unable to get firmware version. Can't continue.");
        return;
        }
    
    if (nvmem_get_mac_address(fancyBuffer)==0) {
        Serial.print("  MAC address: ");
        for (byte i=0; i<MAC_ADDR_LEN; i++) {
            if (i!=0) {
                Serial.print(":");
                }
            Serial.print(fancyBuffer[i], HEX);
            }
        Serial.println();
        
        isInitialized=true;
        }
    else {
        Serial.println("Unable to get MAC address. Can't continue.");
        }
    
    }

在CC3000_Init();处卡死，最后追根溯源在是在ArduinoCC3000SPI.C中的spiwrite函数中卡死。

long
SpiWrite(unsigned char *pUserBuffer, unsigned short usLength)
{
    unsigned char ucPad = 0;
    
    //
    // Figure out the total length of the packet in order to figure out if there is padding or not
    //
Serial.println("a1");
    if(!(usLength & 0x0001))
    {
        ucPad++;
    }

  Serial.println("a1");
    pUserBuffer[0] = WRITE;
    pUserBuffer[1] = HI(usLength + ucPad);
    pUserBuffer[2] = LO(usLength + ucPad);
    pUserBuffer[3] = 0;
    pUserBuffer[4] = 0;
Serial.println("a1");
    usLength += (SPI_HEADER_SIZE + ucPad);
    Serial.println("a1");    
        // The magic number that resides at the end of the TX/RX buffer (1 byte after the allocated size)
        // for the purpose of overrun detection. If the magic number is overwritten – buffer overrun        // occurred – and we will be stuck here forever!
    if (wlan_tx_buffer[CC3000_TX_BUFFER_SIZE – 1] != CC3000_BUFFER_MAGIC_NUMBER)
    {
        while (1)
            ;
    }
    Serial.println("b1");
    if (sSpiInformation.ulSpiState == eSPI_STATE_POWERUP)
    {
        while (sSpiInformation.ulSpiState != eSPI_STATE_INITIALIZED) {        
  Serial.println("no");//在此处一直跳不出
}
            ;
    }
    Serial.println("a1");//此句及以下未执行
    if (sSpiInformation.ulSpiState == eSPI_STATE_INITIALIZED)
    {
        //
        // This is time for first TX/RX transactions over SPI: the IRQ is down – so need to send read buffer size command
        //
        SpiFirstWrite(pUserBuffer, usLength);
    }
    else    {
        //
        // We need to prevent here race that can occur in case two back to back packets are sent to the        // device, so the state will move to IDLE and once again to not IDLE due to IRQ
        //
        tSLInformation.WlanInterruptDisable();

        while (sSpiInformation.ulSpiState != eSPI_STATE_IDLE)
        {
            ;
        }

        
        sSpiInformation.ulSpiState = eSPI_STATE_WRITE_IRQ;
        sSpiInformation.pTxPacket = pUserBuffer;
        sSpiInformation.usTxPacketLength = usLength;
        
        //
        // Assert the CS line and wait till SSI IRQ line is active and then initialize write operation
        //
        Set_CC3000_CS_Active();

        //
        // Re-enable IRQ – if it was not disabled – this is not a problem…
        //
        tSLInformation.WlanInterruptEnable();

        //
        // check for a missing interrupt between the CS assertion and enabling back the interrupts
        //
        if (tSLInformation.ReadWlanInterruptPin() == 0)
        {
                    SpiWriteDataSynchronous(sSpiInformation.pTxPacket, sSpiInformation.usTxPacketLength);

            sSpiInformation.ulSpiState = eSPI_STATE_IDLE;

            Set_CC3000_CS_NotActive();
        }
    }

    //
    // Due to the fact that we are currently implementing a blocking situation
    // here we will wait till end of transaction
    //

    while (eSPI_STATE_IDLE != sSpiInformation.ulSpiState)
        ;
    
    return(0);
}

百思不得其解，求助。

Yonghua Pan：

初始化就没有成功，你能否参考一下这两个链接：

http://processors.wiki.ti.com/index.php/CC3000_Host_Driver_Porting_Guide

http://processors.wiki.ti.com/index.php/CC3000_Serial_Port_Interface_(SPI)

着重看一下SPI那几条线上的波形是不是对的。