幫忙看一下配置吧，現(xiàn)在的波形沒(méi)什么指導(dǎo)意義，就是MOSI高電平正弦波形，其他低電平幾乎無(wú)信號(hào)。
主函數(shù)：
hSPI = SPI.SPIOpen();
if...
SPI.SPISetBandRate(hSPI, SPI.SPI_TRANSFER_HS_NORMAL_SPEED);
TxBuffer[0] = 0xfc; //主機(jī)發(fā)送的數(shù)據(jù)_低8位
TxBuffer[1] = 0xf3; //主機(jī)發(fā)送的數(shù)據(jù)_高8位
sSPI.BitCount = 2;
sSPI.pDatBuf = pTxBuffer;
sSPI.dwDatLen = 2;
sSPI.bLockCS = 0;
Marshal.Copy(TxBuffer, 0, pTxBuffer, 2);
bRes = SPI.WriteFile(hSPI, ref sSPI, sizeSPI, ref uLen, 0);
if (!bRes)...
sSPI.BitCount = 4;
sSPI.pDatBuf = pRxBuffer;
sSPI.dwDatLen = 10;
sSPI.bLockCS = 1;
while (true)
{
bRes = SPI.ReadFile(hSPI, ref sSPI, sizeSPI, ref uLen, 0);
}
SPI.CS文件：
public static bool SPIConfigure(int hDevice)
{
int sizeSSP_INIT = Marshal.SizeOf(typeof(SSP_INIT));
SSP_INIT spiinit;
spiinit.eMode = SSP_MODE_SPI;
spiinit.eLength = SSP_WORD_LENGTH_16BITS;
spiinit.bDmaEnable = 0; // 0: dma disabled, 1: dma enabled
spiinit.b_ceata_ccs_err_en = 0; // CEATA Unexpected CCS Error logic enable. 0: disabled, 1: enabled
spiinit.bPhase = 0; // SPI, MemStick, and SD modes
spiinit.bPolarity = 0; // SPI, MemStick, and SD modes
spiinit.bSlave = 0; // 0: SSP is Master, 1: SSP is Slave
spiinit.bIgnoreCrc = 0; // Ignore the response CRC
spiinit.bBusWidth4 = 0; // 0: 1-bit bus, 1: 4 bit bus
spiinit.bWaitIrq = 0;
spiinit.bLongResp = 0; // Get long response from device
spiinit.bCheckResp = 0; // Check Response against reference to insure integrity of response
spiinit.bGetResp = 0; // wait for a response
spiinit.u16TransferCount = 0;
spiinit.bEnable = 0; // Command Transmit Enable.
spiinit.bWaitCmd = 0; //
spiinit.bDataTransfr = 0; // Data Transfer Enable
spiinit.bRead = 0; // Read Mode
spiinit.bSlaveOutDisable = 0; // 0: SSP can drive MISO in slave mode, 1: SSP does not drive MISO
spiinit.bHalfDuplex = 0;
spiinit.bLockCs = 1;
if (DeviceIoControl(hDevice, SPI_IOCTL_SSPCONFIGURE, ref spiinit, sizeSSP_INIT, null, 0, 0, IntPtr.Zero) == false)
{
return false;
}
return true;
}
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Post By：2013-11-1 16:33:00 [只看該作者]
